/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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 01:49:24,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 01:49:24,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 01:49:24,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 01:49:24,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 01:49:24,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 01:49:24,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 01:49:24,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 01:49:24,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 01:49:24,416 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 01:49:24,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 01:49:24,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 01:49:24,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 01:49:24,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 01:49:24,417 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 01:49:24,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 01:49:24,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 01:49:24,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 01:49:24,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 01:49:24,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 01:49:24,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 01:49:24,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 01:49:24,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 01:49:24,420 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 01:49:24,420 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 01:49:24,420 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 01:49:24,420 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 01:49:24,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 01:49:24,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 01:49:24,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 01:49:24,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 01:49:24,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 01:49:24,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 01:49:24,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 01:49:24,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:49:24,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 01:49:24,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 01:49:24,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 01:49:24,423 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 01:49:24,423 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 01:49:24,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 01:49:24,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 01:49:24,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 01:49:24,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 01:49:24,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 01:49:24,424 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 01:49:24,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 01:49:24,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 01:49:24,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 01:49:24,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 01:49:24,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 01:49:24,602 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 01:49:24,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-12-22 01:49:25,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 01:49:25,890 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 01:49:25,890 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-12-22 01:49:25,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d739985/1b07b2676bf4405f949a22acf8c20e6c/FLAGad53b77a7 [2023-12-22 01:49:25,944 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d739985/1b07b2676bf4405f949a22acf8c20e6c [2023-12-22 01:49:25,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 01:49:25,949 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 01:49:25,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 01:49:25,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 01:49:25,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 01:49:25,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:25" (1/1) ... [2023-12-22 01:49:25,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0b59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:25, skipping insertion in model container [2023-12-22 01:49:25,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:25" (1/1) ... [2023-12-22 01:49:26,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 01:49:26,391 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[20463,20476] [2023-12-22 01:49:26,434 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[27399,27412] [2023-12-22 01:49:26,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:49:26,966 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 01:49:27,003 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[20463,20476] [2023-12-22 01:49:27,014 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/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[27399,27412] [2023-12-22 01:49:27,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:49:27,350 INFO L206 MainTranslator]: Completed translation [2023-12-22 01:49:27,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27 WrapperNode [2023-12-22 01:49:27,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 01:49:27,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 01:49:27,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 01:49:27,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 01:49:27,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,529 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5184 [2023-12-22 01:49:27,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 01:49:27,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 01:49:27,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 01:49:27,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 01:49:27,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,637 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]. [2023-12-22 01:49:27,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 01:49:27,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 01:49:27,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 01:49:27,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 01:49:27,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (1/1) ... [2023-12-22 01:49:27,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:49:27,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 01:49:27,811 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) [2023-12-22 01:49:27,827 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 [2023-12-22 01:49:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 01:49:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 01:49:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 01:49:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 01:49:27,926 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 01:49:27,927 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 01:49:50,854 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 01:49:50,907 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 01:49:50,907 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 01:49:50,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:50 BoogieIcfgContainer [2023-12-22 01:49:50,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 01:49:50,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 01:49:50,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 01:49:50,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 01:49:50,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:49:25" (1/3) ... [2023-12-22 01:49:50,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582d3f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:50, skipping insertion in model container [2023-12-22 01:49:50,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:27" (2/3) ... [2023-12-22 01:49:50,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582d3f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:50, skipping insertion in model container [2023-12-22 01:49:50,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:50" (3/3) ... [2023-12-22 01:49:50,914 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-12-22 01:49:50,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 01:49:50,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 01:49:50,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 01:49:51,002 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;@7408d0ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 01:49:51,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 01:49:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:49:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 01:49:51,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:49:51,018 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] [2023-12-22 01:49:51,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:49:51,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:49:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash -58125809, now seen corresponding path program 1 times [2023-12-22 01:49:51,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:49:51,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741446727] [2023-12-22 01:49:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:49:51,034 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 [2023-12-22 01:49:51,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:49:51,036 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) [2023-12-22 01:49:51,043 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 [2023-12-22 01:49:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:49:51,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 01:49:51,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:49:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:49:51,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:49:51,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:49:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741446727] [2023-12-22 01:49:51,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741446727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:49:51,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:49:51,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:49:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064976989] [2023-12-22 01:49:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:49:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 01:49:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:49:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 01:49:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 01:49:51,169 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:49:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:49:51,263 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-12-22 01:49:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 01:49:51,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-22 01:49:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:49:51,280 INFO L225 Difference]: With dead ends: 1676 [2023-12-22 01:49:51,280 INFO L226 Difference]: Without dead ends: 861 [2023-12-22 01:49:51,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 01:49:51,288 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:49:51,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:49:51,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-22 01:49:51,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-22 01:49:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:49:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-22 01:49:51,349 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-12-22 01:49:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:49:51,350 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-22 01:49:51,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:49:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-22 01:49:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 01:49:51,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:49:51,352 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] [2023-12-22 01:49:51,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 01:49:51,575 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 [2023-12-22 01:49:51,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:49:51,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:49:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash 364576017, now seen corresponding path program 1 times [2023-12-22 01:49:51,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:49:51,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3043420] [2023-12-22 01:49:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:49:51,578 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 [2023-12-22 01:49:51,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:49:51,580 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) [2023-12-22 01:49:51,581 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 [2023-12-22 01:49:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:49:51,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:49:51,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:49:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:49:51,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:49:51,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:49:51,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3043420] [2023-12-22 01:49:51,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3043420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:49:51,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:49:51,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:49:51,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437025874] [2023-12-22 01:49:51,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:49:51,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:49:51,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:49:51,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:49:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:49:51,741 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:49:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:49:51,876 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-12-22 01:49:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:49:51,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-22 01:49:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:49:51,883 INFO L225 Difference]: With dead ends: 917 [2023-12-22 01:49:51,883 INFO L226 Difference]: Without dead ends: 861 [2023-12-22 01:49:51,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:49:51,886 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:49:51,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 01:49:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-22 01:49:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-22 01:49:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.838183934807916) internal successors, (1579), 860 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:49:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-12-22 01:49:51,917 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-12-22 01:49:51,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:49:51,917 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-12-22 01:49:51,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:49:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-12-22 01:49:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-22 01:49:51,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:49:51,924 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] [2023-12-22 01:49:51,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 01:49:52,129 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 [2023-12-22 01:49:52,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:49:52,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:49:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2121093177, now seen corresponding path program 1 times [2023-12-22 01:49:52,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:49:52,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76025070] [2023-12-22 01:49:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:49:52,131 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 [2023-12-22 01:49:52,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:49:52,134 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) [2023-12-22 01:49:52,137 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 [2023-12-22 01:49:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:49:52,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:49:52,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:49:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:49:52,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:49:52,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:49:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76025070] [2023-12-22 01:49:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76025070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:49:52,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:49:52,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:49:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981259702] [2023-12-22 01:49:52,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:49:52,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:49:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:49:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:49:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:49:52,341 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:24,256 INFO L93 Difference]: Finished difference Result 2365 states and 4452 transitions. [2023-12-22 01:50:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:24,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-22 01:50:24,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:24,261 INFO L225 Difference]: With dead ends: 2365 [2023-12-22 01:50:24,261 INFO L226 Difference]: Without dead ends: 1612 [2023-12-22 01:50:24,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:24,264 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 899 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:24,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 565 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time] [2023-12-22 01:50:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-22 01:50:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-22 01:50:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.6186335403726708) internal successors, (2606), 1611 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2606 transitions. [2023-12-22 01:50:24,286 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2606 transitions. Word has length 59 [2023-12-22 01:50:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:24,286 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2606 transitions. [2023-12-22 01:50:24,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2606 transitions. [2023-12-22 01:50:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-22 01:50:24,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:24,287 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] [2023-12-22 01:50:24,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 01:50:24,487 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 [2023-12-22 01:50:24,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:24,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1115950856, now seen corresponding path program 1 times [2023-12-22 01:50:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:24,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205638097] [2023-12-22 01:50:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:24,489 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 [2023-12-22 01:50:24,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:24,490 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) [2023-12-22 01:50:24,495 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 [2023-12-22 01:50:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:24,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 01:50:24,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:25,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:25,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205638097] [2023-12-22 01:50:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205638097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:25,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:25,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 01:50:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972034514] [2023-12-22 01:50:25,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 01:50:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 01:50:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:50:25,811 INFO L87 Difference]: Start difference. First operand 1612 states and 2606 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:26,196 INFO L93 Difference]: Finished difference Result 2036 states and 3294 transitions. [2023-12-22 01:50:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 01:50:26,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-22 01:50:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:26,204 INFO L225 Difference]: With dead ends: 2036 [2023-12-22 01:50:26,204 INFO L226 Difference]: Without dead ends: 1983 [2023-12-22 01:50:26,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:50:26,207 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 5085 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5085 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:26,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5085 Valid, 2427 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 01:50:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2023-12-22 01:50:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1714. [2023-12-22 01:50:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1712 states have (on average 1.6197429906542056) internal successors, (2773), 1713 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2773 transitions. [2023-12-22 01:50:26,241 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2773 transitions. Word has length 74 [2023-12-22 01:50:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:26,243 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2773 transitions. [2023-12-22 01:50:26,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2773 transitions. [2023-12-22 01:50:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 01:50:26,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:26,244 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] [2023-12-22 01:50:26,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 01:50:26,448 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 [2023-12-22 01:50:26,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:26,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1436654440, now seen corresponding path program 1 times [2023-12-22 01:50:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35543448] [2023-12-22 01:50:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:26,450 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 [2023-12-22 01:50:26,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:26,451 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) [2023-12-22 01:50:26,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 01:50:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:26,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:26,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:26,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:26,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35543448] [2023-12-22 01:50:26,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35543448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:26,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:26,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:26,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836643107] [2023-12-22 01:50:26,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:26,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:26,739 INFO L87 Difference]: Start difference. First operand 1714 states and 2773 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:26,786 INFO L93 Difference]: Finished difference Result 2008 states and 3251 transitions. [2023-12-22 01:50:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:26,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-22 01:50:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:26,793 INFO L225 Difference]: With dead ends: 2008 [2023-12-22 01:50:26,794 INFO L226 Difference]: Without dead ends: 1853 [2023-12-22 01:50:26,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:26,795 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:26,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1655 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-12-22 01:50:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1851. [2023-12-22 01:50:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1849 states have (on average 1.6181719848566793) internal successors, (2992), 1850 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2992 transitions. [2023-12-22 01:50:26,824 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2992 transitions. Word has length 76 [2023-12-22 01:50:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:26,825 INFO L495 AbstractCegarLoop]: Abstraction has 1851 states and 2992 transitions. [2023-12-22 01:50:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2992 transitions. [2023-12-22 01:50:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-22 01:50:26,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:26,833 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] [2023-12-22 01:50:26,837 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 [2023-12-22 01:50:27,036 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 [2023-12-22 01:50:27,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:27,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1648504521, now seen corresponding path program 1 times [2023-12-22 01:50:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:27,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116647463] [2023-12-22 01:50:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:27,038 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 [2023-12-22 01:50:27,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:27,039 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) [2023-12-22 01:50:27,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 01:50:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:27,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:50:27,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:27,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:27,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116647463] [2023-12-22 01:50:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116647463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:50:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324088144] [2023-12-22 01:50:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:27,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:50:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:50:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:50:27,146 INFO L87 Difference]: Start difference. First operand 1851 states and 2992 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:27,198 INFO L93 Difference]: Finished difference Result 1865 states and 3009 transitions. [2023-12-22 01:50:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:50:27,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-22 01:50:27,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:27,204 INFO L225 Difference]: With dead ends: 1865 [2023-12-22 01:50:27,204 INFO L226 Difference]: Without dead ends: 1863 [2023-12-22 01:50:27,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:50:27,205 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:27,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:27,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2023-12-22 01:50:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1859. [2023-12-22 01:50:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1857 states have (on average 1.6149703823371029) internal successors, (2999), 1858 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2999 transitions. [2023-12-22 01:50:27,229 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2999 transitions. Word has length 77 [2023-12-22 01:50:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:27,230 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2999 transitions. [2023-12-22 01:50:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2999 transitions. [2023-12-22 01:50:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:50:27,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:27,231 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] [2023-12-22 01:50:27,236 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 [2023-12-22 01:50:27,434 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 [2023-12-22 01:50:27,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:27,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash -981819824, now seen corresponding path program 1 times [2023-12-22 01:50:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537760271] [2023-12-22 01:50:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:27,435 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 [2023-12-22 01:50:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:27,436 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) [2023-12-22 01:50:27,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 01:50:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:27,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:27,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:27,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:27,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:27,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537760271] [2023-12-22 01:50:27,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537760271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:27,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:27,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:27,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93189805] [2023-12-22 01:50:27,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:27,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:27,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:27,620 INFO L87 Difference]: Start difference. First operand 1859 states and 2999 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:27,664 INFO L93 Difference]: Finished difference Result 2171 states and 3499 transitions. [2023-12-22 01:50:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:50:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:27,670 INFO L225 Difference]: With dead ends: 2171 [2023-12-22 01:50:27,670 INFO L226 Difference]: Without dead ends: 2010 [2023-12-22 01:50:27,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:27,671 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:27,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2023-12-22 01:50:27,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2008. [2023-12-22 01:50:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2006 states have (on average 1.6126620139581256) internal successors, (3235), 2007 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3235 transitions. [2023-12-22 01:50:27,700 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3235 transitions. Word has length 78 [2023-12-22 01:50:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:27,700 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 3235 transitions. [2023-12-22 01:50:27,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3235 transitions. [2023-12-22 01:50:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:50:27,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:27,701 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] [2023-12-22 01:50:27,707 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 [2023-12-22 01:50:27,905 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 [2023-12-22 01:50:27,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:27,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash -226435760, now seen corresponding path program 1 times [2023-12-22 01:50:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:27,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304866549] [2023-12-22 01:50:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:27,906 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 [2023-12-22 01:50:27,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:27,907 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) [2023-12-22 01:50:27,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 01:50:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:27,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:27,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:28,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:28,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304866549] [2023-12-22 01:50:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304866549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:28,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:28,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586778253] [2023-12-22 01:50:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:28,053 INFO L87 Difference]: Start difference. First operand 2008 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:28,098 INFO L93 Difference]: Finished difference Result 2866 states and 4598 transitions. [2023-12-22 01:50:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:28,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:50:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:28,106 INFO L225 Difference]: With dead ends: 2866 [2023-12-22 01:50:28,107 INFO L226 Difference]: Without dead ends: 2419 [2023-12-22 01:50:28,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:28,108 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:28,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2023-12-22 01:50:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2417. [2023-12-22 01:50:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.6045548654244306) internal successors, (3875), 2416 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3875 transitions. [2023-12-22 01:50:28,138 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3875 transitions. Word has length 78 [2023-12-22 01:50:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:28,138 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3875 transitions. [2023-12-22 01:50:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3875 transitions. [2023-12-22 01:50:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:50:28,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:28,139 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] [2023-12-22 01:50:28,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 01:50:28,342 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 [2023-12-22 01:50:28,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:28,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash -636822448, now seen corresponding path program 1 times [2023-12-22 01:50:28,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:28,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830845144] [2023-12-22 01:50:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:28,344 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 [2023-12-22 01:50:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:28,345 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) [2023-12-22 01:50:28,375 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 [2023-12-22 01:50:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:28,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:28,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:28,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:28,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830845144] [2023-12-22 01:50:28,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830845144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:28,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:28,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720076068] [2023-12-22 01:50:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:28,481 INFO L87 Difference]: Start difference. First operand 2417 states and 3875 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:28,520 INFO L93 Difference]: Finished difference Result 4057 states and 6455 transitions. [2023-12-22 01:50:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:28,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:50:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:28,528 INFO L225 Difference]: With dead ends: 4057 [2023-12-22 01:50:28,528 INFO L226 Difference]: Without dead ends: 3201 [2023-12-22 01:50:28,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:28,530 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:28,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:28,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2023-12-22 01:50:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 3199. [2023-12-22 01:50:28,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3197 states have (on average 1.589928057553957) internal successors, (5083), 3198 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5083 transitions. [2023-12-22 01:50:28,638 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5083 transitions. Word has length 78 [2023-12-22 01:50:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:28,639 INFO L495 AbstractCegarLoop]: Abstraction has 3199 states and 5083 transitions. [2023-12-22 01:50:28,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5083 transitions. [2023-12-22 01:50:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:50:28,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:28,639 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] [2023-12-22 01:50:28,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 01:50:28,842 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 [2023-12-22 01:50:28,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:28,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:28,843 INFO L85 PathProgramCache]: Analyzing trace with hash -905405616, now seen corresponding path program 1 times [2023-12-22 01:50:28,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:28,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955166411] [2023-12-22 01:50:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:28,844 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 [2023-12-22 01:50:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:28,845 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) [2023-12-22 01:50:28,848 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 [2023-12-22 01:50:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:28,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:28,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:28,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:28,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955166411] [2023-12-22 01:50:28,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955166411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:28,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:28,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:28,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227822729] [2023-12-22 01:50:28,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:28,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:28,975 INFO L87 Difference]: Start difference. First operand 3199 states and 5083 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:29,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:29,026 INFO L93 Difference]: Finished difference Result 6331 states and 9953 transitions. [2023-12-22 01:50:29,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:29,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:50:29,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:29,037 INFO L225 Difference]: With dead ends: 6331 [2023-12-22 01:50:29,037 INFO L226 Difference]: Without dead ends: 4693 [2023-12-22 01:50:29,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:29,040 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:29,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2023-12-22 01:50:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4691. [2023-12-22 01:50:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.5685647259543614) internal successors, (7355), 4690 states have internal predecessors, (7355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 7355 transitions. [2023-12-22 01:50:29,113 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 7355 transitions. Word has length 78 [2023-12-22 01:50:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:29,113 INFO L495 AbstractCegarLoop]: Abstraction has 4691 states and 7355 transitions. [2023-12-22 01:50:29,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 7355 transitions. [2023-12-22 01:50:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:50:29,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:29,114 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] [2023-12-22 01:50:29,116 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 [2023-12-22 01:50:29,316 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 [2023-12-22 01:50:29,317 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:29,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:29,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1491117744, now seen corresponding path program 1 times [2023-12-22 01:50:29,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158910795] [2023-12-22 01:50:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:29,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:29,319 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) [2023-12-22 01:50:29,321 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 [2023-12-22 01:50:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:29,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:29,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:29,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:29,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158910795] [2023-12-22 01:50:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158910795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:29,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:29,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:29,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078964196] [2023-12-22 01:50:29,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:29,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:29,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:29,461 INFO L87 Difference]: Start difference. First operand 4691 states and 7355 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:29,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:29,533 INFO L93 Difference]: Finished difference Result 10663 states and 16517 transitions. [2023-12-22 01:50:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:29,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:50:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:29,562 INFO L225 Difference]: With dead ends: 10663 [2023-12-22 01:50:29,562 INFO L226 Difference]: Without dead ends: 7533 [2023-12-22 01:50:29,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:29,568 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:29,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7533 states. [2023-12-22 01:50:29,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7533 to 7531. [2023-12-22 01:50:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7531 states, 7529 states have (on average 1.5421702749369106) internal successors, (11611), 7530 states have internal predecessors, (11611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7531 states to 7531 states and 11611 transitions. [2023-12-22 01:50:29,755 INFO L78 Accepts]: Start accepts. Automaton has 7531 states and 11611 transitions. Word has length 78 [2023-12-22 01:50:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:29,755 INFO L495 AbstractCegarLoop]: Abstraction has 7531 states and 11611 transitions. [2023-12-22 01:50:29,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7531 states and 11611 transitions. [2023-12-22 01:50:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:50:29,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:29,757 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] [2023-12-22 01:50:29,759 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 [2023-12-22 01:50:29,959 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 [2023-12-22 01:50:29,960 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:29,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:29,960 INFO L85 PathProgramCache]: Analyzing trace with hash -602384304, now seen corresponding path program 1 times [2023-12-22 01:50:29,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:29,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707398418] [2023-12-22 01:50:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:29,961 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 [2023-12-22 01:50:29,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:29,962 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) [2023-12-22 01:50:29,962 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 [2023-12-22 01:50:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:30,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:30,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:30,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:30,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:30,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707398418] [2023-12-22 01:50:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707398418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:30,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:30,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:30,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108450047] [2023-12-22 01:50:30,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:30,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:30,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:30,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:30,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:30,097 INFO L87 Difference]: Start difference. First operand 7531 states and 11611 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:30,202 INFO L93 Difference]: Finished difference Result 18895 states and 28781 transitions. [2023-12-22 01:50:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:30,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:50:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:30,224 INFO L225 Difference]: With dead ends: 18895 [2023-12-22 01:50:30,224 INFO L226 Difference]: Without dead ends: 12925 [2023-12-22 01:50:30,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:30,234 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:30,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2023-12-22 01:50:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 12923. [2023-12-22 01:50:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12923 states, 12921 states have (on average 1.5128086061450352) internal successors, (19547), 12922 states have internal predecessors, (19547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12923 states to 12923 states and 19547 transitions. [2023-12-22 01:50:30,466 INFO L78 Accepts]: Start accepts. Automaton has 12923 states and 19547 transitions. Word has length 78 [2023-12-22 01:50:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:30,466 INFO L495 AbstractCegarLoop]: Abstraction has 12923 states and 19547 transitions. [2023-12-22 01:50:30,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 12923 states and 19547 transitions. [2023-12-22 01:50:30,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:50:30,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:30,466 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] [2023-12-22 01:50:30,469 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 [2023-12-22 01:50:30,669 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 [2023-12-22 01:50:30,670 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:30,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash -865461680, now seen corresponding path program 1 times [2023-12-22 01:50:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964732941] [2023-12-22 01:50:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:30,671 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 [2023-12-22 01:50:30,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:30,671 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) [2023-12-22 01:50:30,672 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 [2023-12-22 01:50:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:30,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:30,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:30,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:30,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:30,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964732941] [2023-12-22 01:50:30,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964732941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:30,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:30,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799524875] [2023-12-22 01:50:30,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:30,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:30,815 INFO L87 Difference]: Start difference. First operand 12923 states and 19547 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:31,045 INFO L93 Difference]: Finished difference Result 34495 states and 51581 transitions. [2023-12-22 01:50:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:50:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:31,078 INFO L225 Difference]: With dead ends: 34495 [2023-12-22 01:50:31,078 INFO L226 Difference]: Without dead ends: 23133 [2023-12-22 01:50:31,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:31,089 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:31,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23133 states. [2023-12-22 01:50:31,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23133 to 23131. [2023-12-22 01:50:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23131 states, 23129 states have (on average 1.4815599463876519) internal successors, (34267), 23130 states have internal predecessors, (34267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23131 states to 23131 states and 34267 transitions. [2023-12-22 01:50:31,496 INFO L78 Accepts]: Start accepts. Automaton has 23131 states and 34267 transitions. Word has length 78 [2023-12-22 01:50:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:31,496 INFO L495 AbstractCegarLoop]: Abstraction has 23131 states and 34267 transitions. [2023-12-22 01:50:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 23131 states and 34267 transitions. [2023-12-22 01:50:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 01:50:31,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:31,502 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:31,506 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 [2023-12-22 01:50:31,706 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 [2023-12-22 01:50:31,706 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:31,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1758605507, now seen corresponding path program 1 times [2023-12-22 01:50:31,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716637946] [2023-12-22 01:50:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:31,707 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 [2023-12-22 01:50:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:31,709 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) [2023-12-22 01:50:31,709 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 [2023-12-22 01:50:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:31,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:50:31,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:32,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:50:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:33,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716637946] [2023-12-22 01:50:33,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716637946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:50:33,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:50:33,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:50:33,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138763259] [2023-12-22 01:50:33,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:50:33,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:50:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:50:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:50:33,124 INFO L87 Difference]: Start difference. First operand 23131 states and 34267 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:35,819 INFO L93 Difference]: Finished difference Result 70437 states and 103264 transitions. [2023-12-22 01:50:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:50:35,820 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 01:50:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:35,942 INFO L225 Difference]: With dead ends: 70437 [2023-12-22 01:50:35,942 INFO L226 Difference]: Without dead ends: 55459 [2023-12-22 01:50:35,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 01:50:35,962 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3873 mSDsluCounter, 12724 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3873 SdHoareTripleChecker+Valid, 14314 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:35,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3873 Valid, 14314 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 01:50:36,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55459 states. [2023-12-22 01:50:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55459 to 44699. [2023-12-22 01:50:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44699 states, 44697 states have (on average 1.4725596796205562) internal successors, (65819), 44698 states have internal predecessors, (65819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44699 states to 44699 states and 65819 transitions. [2023-12-22 01:50:37,097 INFO L78 Accepts]: Start accepts. Automaton has 44699 states and 65819 transitions. Word has length 100 [2023-12-22 01:50:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:37,097 INFO L495 AbstractCegarLoop]: Abstraction has 44699 states and 65819 transitions. [2023-12-22 01:50:37,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:37,097 INFO L276 IsEmpty]: Start isEmpty. Operand 44699 states and 65819 transitions. [2023-12-22 01:50:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 01:50:37,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:37,101 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:37,107 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 [2023-12-22 01:50:37,305 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 [2023-12-22 01:50:37,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:37,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1780977725, now seen corresponding path program 1 times [2023-12-22 01:50:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251087422] [2023-12-22 01:50:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:37,306 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 [2023-12-22 01:50:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:37,307 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) [2023-12-22 01:50:37,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 01:50:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:37,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:37,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:37,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:37,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251087422] [2023-12-22 01:50:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251087422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021246933] [2023-12-22 01:50:37,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:37,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:37,436 INFO L87 Difference]: Start difference. First operand 44699 states and 65819 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:37,989 INFO L93 Difference]: Finished difference Result 74677 states and 110196 transitions. [2023-12-22 01:50:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:37,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 01:50:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:38,032 INFO L225 Difference]: With dead ends: 74677 [2023-12-22 01:50:38,033 INFO L226 Difference]: Without dead ends: 31539 [2023-12-22 01:50:38,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:38,069 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 63 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:38,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3197 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:38,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31539 states. [2023-12-22 01:50:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31539 to 31532. [2023-12-22 01:50:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31532 states, 31530 states have (on average 1.4750396447827465) internal successors, (46508), 31531 states have internal predecessors, (46508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31532 states to 31532 states and 46508 transitions. [2023-12-22 01:50:38,785 INFO L78 Accepts]: Start accepts. Automaton has 31532 states and 46508 transitions. Word has length 100 [2023-12-22 01:50:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:38,785 INFO L495 AbstractCegarLoop]: Abstraction has 31532 states and 46508 transitions. [2023-12-22 01:50:38,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 31532 states and 46508 transitions. [2023-12-22 01:50:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-22 01:50:38,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:38,791 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:38,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 01:50:38,995 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 [2023-12-22 01:50:38,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:38,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1681904461, now seen corresponding path program 1 times [2023-12-22 01:50:38,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:38,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078140227] [2023-12-22 01:50:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:38,996 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 [2023-12-22 01:50:38,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:38,997 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) [2023-12-22 01:50:39,001 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 [2023-12-22 01:50:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:39,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:39,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:39,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:39,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078140227] [2023-12-22 01:50:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078140227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:39,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:39,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060027157] [2023-12-22 01:50:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:39,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:39,115 INFO L87 Difference]: Start difference. First operand 31532 states and 46508 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:39,323 INFO L93 Difference]: Finished difference Result 46512 states and 68494 transitions. [2023-12-22 01:50:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-22 01:50:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:39,342 INFO L225 Difference]: With dead ends: 46512 [2023-12-22 01:50:39,342 INFO L226 Difference]: Without dead ends: 16558 [2023-12-22 01:50:39,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:39,362 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 59 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:39,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3182 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16558 states. [2023-12-22 01:50:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16558 to 16556. [2023-12-22 01:50:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16556 states, 16554 states have (on average 1.4698562281019694) internal successors, (24332), 16555 states have internal predecessors, (24332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16556 states to 16556 states and 24332 transitions. [2023-12-22 01:50:39,720 INFO L78 Accepts]: Start accepts. Automaton has 16556 states and 24332 transitions. Word has length 102 [2023-12-22 01:50:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:39,720 INFO L495 AbstractCegarLoop]: Abstraction has 16556 states and 24332 transitions. [2023-12-22 01:50:39,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 16556 states and 24332 transitions. [2023-12-22 01:50:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-22 01:50:39,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:39,722 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:39,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 01:50:39,922 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 [2023-12-22 01:50:39,922 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:39,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 334933909, now seen corresponding path program 1 times [2023-12-22 01:50:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086383190] [2023-12-22 01:50:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:39,923 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 [2023-12-22 01:50:39,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:39,924 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) [2023-12-22 01:50:39,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 01:50:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:40,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:50:40,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:41,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:50:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:41,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:41,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086383190] [2023-12-22 01:50:41,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086383190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:50:41,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:50:41,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:50:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118125218] [2023-12-22 01:50:41,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:50:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:50:41,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:50:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:50:41,498 INFO L87 Difference]: Start difference. First operand 16556 states and 24332 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:42,802 INFO L93 Difference]: Finished difference Result 31934 states and 46529 transitions. [2023-12-22 01:50:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 01:50:42,803 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-22 01:50:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:42,824 INFO L225 Difference]: With dead ends: 31934 [2023-12-22 01:50:42,824 INFO L226 Difference]: Without dead ends: 16956 [2023-12-22 01:50:42,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-22 01:50:42,839 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 3183 mSDsluCounter, 12196 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 13716 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:42,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3183 Valid, 13716 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 01:50:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2023-12-22 01:50:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 16570. [2023-12-22 01:50:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16570 states, 16568 states have (on average 1.4695799130854659) internal successors, (24348), 16569 states have internal predecessors, (24348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16570 states to 16570 states and 24348 transitions. [2023-12-22 01:50:43,229 INFO L78 Accepts]: Start accepts. Automaton has 16570 states and 24348 transitions. Word has length 103 [2023-12-22 01:50:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:43,229 INFO L495 AbstractCegarLoop]: Abstraction has 16570 states and 24348 transitions. [2023-12-22 01:50:43,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 16570 states and 24348 transitions. [2023-12-22 01:50:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-22 01:50:43,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:43,231 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:43,239 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 [2023-12-22 01:50:43,433 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 [2023-12-22 01:50:43,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:43,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash 497928529, now seen corresponding path program 1 times [2023-12-22 01:50:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:43,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680507339] [2023-12-22 01:50:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:43,434 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 [2023-12-22 01:50:43,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:43,435 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) [2023-12-22 01:50:43,436 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 [2023-12-22 01:50:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:43,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:43,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:43,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:43,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:43,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680507339] [2023-12-22 01:50:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680507339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78444601] [2023-12-22 01:50:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:43,576 INFO L87 Difference]: Start difference. First operand 16570 states and 24348 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:43,706 INFO L93 Difference]: Finished difference Result 24062 states and 35246 transitions. [2023-12-22 01:50:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:43,707 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-22 01:50:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:43,717 INFO L225 Difference]: With dead ends: 24062 [2023-12-22 01:50:43,717 INFO L226 Difference]: Without dead ends: 9084 [2023-12-22 01:50:43,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:43,727 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 55 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:43,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9084 states. [2023-12-22 01:50:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9084 to 9082. [2023-12-22 01:50:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9082 states, 9080 states have (on average 1.4709251101321585) internal successors, (13356), 9081 states have internal predecessors, (13356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:43,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9082 states to 9082 states and 13356 transitions. [2023-12-22 01:50:43,868 INFO L78 Accepts]: Start accepts. Automaton has 9082 states and 13356 transitions. Word has length 105 [2023-12-22 01:50:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:43,868 INFO L495 AbstractCegarLoop]: Abstraction has 9082 states and 13356 transitions. [2023-12-22 01:50:43,868 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 9082 states and 13356 transitions. [2023-12-22 01:50:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-22 01:50:43,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:43,870 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:43,877 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 [2023-12-22 01:50:44,070 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 [2023-12-22 01:50:44,070 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:44,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1220106825, now seen corresponding path program 1 times [2023-12-22 01:50:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:44,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089970483] [2023-12-22 01:50:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:44,071 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 [2023-12-22 01:50:44,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:44,072 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) [2023-12-22 01:50:44,075 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 [2023-12-22 01:50:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:44,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:50:44,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:44,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:50:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:45,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:45,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089970483] [2023-12-22 01:50:45,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089970483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:50:45,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:50:45,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:50:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657381571] [2023-12-22 01:50:45,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:50:45,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:50:45,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:50:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:50:45,340 INFO L87 Difference]: Start difference. First operand 9082 states and 13356 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:47,130 INFO L93 Difference]: Finished difference Result 29922 states and 43120 transitions. [2023-12-22 01:50:47,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:50:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-22 01:50:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:47,156 INFO L225 Difference]: With dead ends: 29922 [2023-12-22 01:50:47,157 INFO L226 Difference]: Without dead ends: 22432 [2023-12-22 01:50:47,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:50:47,168 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 3727 mSDsluCounter, 12580 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 14215 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:47,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3727 Valid, 14215 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 01:50:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22432 states. [2023-12-22 01:50:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22432 to 17146. [2023-12-22 01:50:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17146 states, 17144 states have (on average 1.4370041997200187) internal successors, (24636), 17145 states have internal predecessors, (24636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17146 states to 17146 states and 24636 transitions. [2023-12-22 01:50:47,541 INFO L78 Accepts]: Start accepts. Automaton has 17146 states and 24636 transitions. Word has length 106 [2023-12-22 01:50:47,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:47,541 INFO L495 AbstractCegarLoop]: Abstraction has 17146 states and 24636 transitions. [2023-12-22 01:50:47,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17146 states and 24636 transitions. [2023-12-22 01:50:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-22 01:50:47,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:47,544 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:47,548 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 [2023-12-22 01:50:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:47,747 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:47,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1258525633, now seen corresponding path program 1 times [2023-12-22 01:50:47,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:47,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709932830] [2023-12-22 01:50:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:47,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:47,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:47,785 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) [2023-12-22 01:50:47,785 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 [2023-12-22 01:50:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:47,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:47,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:47,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:47,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:47,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709932830] [2023-12-22 01:50:47,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709932830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:47,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:47,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:47,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324597515] [2023-12-22 01:50:47,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:47,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:47,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:47,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:47,935 INFO L87 Difference]: Start difference. First operand 17146 states and 24636 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:48,141 INFO L93 Difference]: Finished difference Result 24926 states and 35678 transitions. [2023-12-22 01:50:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:48,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-22 01:50:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:48,151 INFO L225 Difference]: With dead ends: 24926 [2023-12-22 01:50:48,151 INFO L226 Difference]: Without dead ends: 9372 [2023-12-22 01:50:48,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:48,162 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 51 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:48,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2023-12-22 01:50:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 9370. [2023-12-22 01:50:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9370 states, 9368 states have (on average 1.4410760034158838) internal successors, (13500), 9369 states have internal predecessors, (13500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9370 states to 9370 states and 13500 transitions. [2023-12-22 01:50:48,389 INFO L78 Accepts]: Start accepts. Automaton has 9370 states and 13500 transitions. Word has length 108 [2023-12-22 01:50:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:48,390 INFO L495 AbstractCegarLoop]: Abstraction has 9370 states and 13500 transitions. [2023-12-22 01:50:48,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9370 states and 13500 transitions. [2023-12-22 01:50:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-22 01:50:48,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:48,391 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:48,397 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 [2023-12-22 01:50:48,595 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 [2023-12-22 01:50:48,595 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:48,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:48,595 INFO L85 PathProgramCache]: Analyzing trace with hash -104194167, now seen corresponding path program 1 times [2023-12-22 01:50:48,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:48,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350779662] [2023-12-22 01:50:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:48,596 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 [2023-12-22 01:50:48,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:48,597 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) [2023-12-22 01:50:48,598 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 [2023-12-22 01:50:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:48,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:50:48,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:49,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:50:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:49,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350779662] [2023-12-22 01:50:49,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350779662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:50:49,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:50:49,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:50:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124320303] [2023-12-22 01:50:49,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:50:49,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:50:49,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:49,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:50:49,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:50:49,795 INFO L87 Difference]: Start difference. First operand 9370 states and 13500 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:51,460 INFO L93 Difference]: Finished difference Result 30210 states and 42592 transitions. [2023-12-22 01:50:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:50:51,464 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-22 01:50:51,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:51,490 INFO L225 Difference]: With dead ends: 30210 [2023-12-22 01:50:51,490 INFO L226 Difference]: Without dead ends: 22432 [2023-12-22 01:50:51,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:50:51,503 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 2175 mSDsluCounter, 11154 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 12771 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:51,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 12771 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:50:51,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22432 states. [2023-12-22 01:50:51,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22432 to 17722. [2023-12-22 01:50:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17722 states, 17720 states have (on average 1.406546275395034) internal successors, (24924), 17721 states have internal predecessors, (24924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17722 states to 17722 states and 24924 transitions. [2023-12-22 01:50:51,878 INFO L78 Accepts]: Start accepts. Automaton has 17722 states and 24924 transitions. Word has length 109 [2023-12-22 01:50:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:51,878 INFO L495 AbstractCegarLoop]: Abstraction has 17722 states and 24924 transitions. [2023-12-22 01:50:51,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 17722 states and 24924 transitions. [2023-12-22 01:50:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-22 01:50:51,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:51,880 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:51,884 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 (22)] Ended with exit code 0 [2023-12-22 01:50:52,080 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 [2023-12-22 01:50:52,081 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1274066467, now seen corresponding path program 1 times [2023-12-22 01:50:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532027280] [2023-12-22 01:50:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:52,082 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 [2023-12-22 01:50:52,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:52,083 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) [2023-12-22 01:50:52,083 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 [2023-12-22 01:50:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:52,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:52,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:52,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:52,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:52,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532027280] [2023-12-22 01:50:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532027280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:52,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211715932] [2023-12-22 01:50:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:52,216 INFO L87 Difference]: Start difference. First operand 17722 states and 24924 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:52,389 INFO L93 Difference]: Finished difference Result 25790 states and 36110 transitions. [2023-12-22 01:50:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:52,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-22 01:50:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:52,400 INFO L225 Difference]: With dead ends: 25790 [2023-12-22 01:50:52,400 INFO L226 Difference]: Without dead ends: 9660 [2023-12-22 01:50:52,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:52,411 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 47 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:52,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9660 states. [2023-12-22 01:50:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9660 to 9658. [2023-12-22 01:50:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9658 states, 9656 states have (on average 1.4130074565037283) internal successors, (13644), 9657 states have internal predecessors, (13644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9658 states to 9658 states and 13644 transitions. [2023-12-22 01:50:52,597 INFO L78 Accepts]: Start accepts. Automaton has 9658 states and 13644 transitions. Word has length 111 [2023-12-22 01:50:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:52,597 INFO L495 AbstractCegarLoop]: Abstraction has 9658 states and 13644 transitions. [2023-12-22 01:50:52,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 9658 states and 13644 transitions. [2023-12-22 01:50:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-22 01:50:52,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:52,598 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:52,602 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 [2023-12-22 01:50:52,802 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 [2023-12-22 01:50:52,802 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:52,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -546016085, now seen corresponding path program 1 times [2023-12-22 01:50:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898026969] [2023-12-22 01:50:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:52,803 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 [2023-12-22 01:50:52,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:52,804 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) [2023-12-22 01:50:52,807 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 [2023-12-22 01:50:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:52,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:50:52,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:53,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:50:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:54,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:54,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898026969] [2023-12-22 01:50:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898026969] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:50:54,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:50:54,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:50:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238934419] [2023-12-22 01:50:54,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:50:54,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:50:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:50:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:50:54,071 INFO L87 Difference]: Start difference. First operand 9658 states and 13644 transitions. Second operand has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:55,582 INFO L93 Difference]: Finished difference Result 30498 states and 42064 transitions. [2023-12-22 01:50:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:50:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-22 01:50:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:55,607 INFO L225 Difference]: With dead ends: 30498 [2023-12-22 01:50:55,607 INFO L226 Difference]: Without dead ends: 22432 [2023-12-22 01:50:55,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:50:55,619 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 5217 mSDsluCounter, 10977 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 12576 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:55,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 12576 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 01:50:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22432 states. [2023-12-22 01:50:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22432 to 18298. [2023-12-22 01:50:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18298 states, 18296 states have (on average 1.3780061215566244) internal successors, (25212), 18297 states have internal predecessors, (25212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18298 states to 18298 states and 25212 transitions. [2023-12-22 01:50:56,049 INFO L78 Accepts]: Start accepts. Automaton has 18298 states and 25212 transitions. Word has length 112 [2023-12-22 01:50:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:56,049 INFO L495 AbstractCegarLoop]: Abstraction has 18298 states and 25212 transitions. [2023-12-22 01:50:56,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 18298 states and 25212 transitions. [2023-12-22 01:50:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 01:50:56,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:56,052 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 01:50:56,059 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 [2023-12-22 01:50:56,255 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 [2023-12-22 01:50:56,256 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:56,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash 549392843, now seen corresponding path program 1 times [2023-12-22 01:50:56,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:56,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056007427] [2023-12-22 01:50:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:56,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:56,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:56,257 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) [2023-12-22 01:50:56,258 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 [2023-12-22 01:50:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:56,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:56,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:56,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:56,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:56,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056007427] [2023-12-22 01:50:56,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056007427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:56,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:56,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:50:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927747064] [2023-12-22 01:50:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:56,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:56,410 INFO L87 Difference]: Start difference. First operand 18298 states and 25212 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:56,609 INFO L93 Difference]: Finished difference Result 26654 states and 36542 transitions. [2023-12-22 01:50:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:50:56,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-22 01:50:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:56,621 INFO L225 Difference]: With dead ends: 26654 [2023-12-22 01:50:56,622 INFO L226 Difference]: Without dead ends: 9948 [2023-12-22 01:50:56,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:56,632 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 43 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:56,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9948 states. [2023-12-22 01:50:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9948 to 9946. [2023-12-22 01:50:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9946 states, 9944 states have (on average 1.3865647626709574) internal successors, (13788), 9945 states have internal predecessors, (13788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9946 states to 9946 states and 13788 transitions. [2023-12-22 01:50:56,836 INFO L78 Accepts]: Start accepts. Automaton has 9946 states and 13788 transitions. Word has length 114 [2023-12-22 01:50:56,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:56,836 INFO L495 AbstractCegarLoop]: Abstraction has 9946 states and 13788 transitions. [2023-12-22 01:50:56,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand 9946 states and 13788 transitions. [2023-12-22 01:50:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-22 01:50:56,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:56,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:50:56,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-22 01:50:57,038 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 [2023-12-22 01:50:57,038 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:57,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash -479008387, now seen corresponding path program 1 times [2023-12-22 01:50:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:57,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928668682] [2023-12-22 01:50:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:57,039 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 [2023-12-22 01:50:57,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:57,041 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) [2023-12-22 01:50:57,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 01:50:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:57,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:50:57,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:57,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:50:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:58,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:58,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928668682] [2023-12-22 01:50:58,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928668682] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:50:58,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:50:58,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:50:58,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530498048] [2023-12-22 01:50:58,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:50:58,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:50:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:50:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:50:58,313 INFO L87 Difference]: Start difference. First operand 9946 states and 13788 transitions. Second operand has 16 states, 16 states have (on average 13.875) internal successors, (222), 16 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:00,157 INFO L93 Difference]: Finished difference Result 30786 states and 41536 transitions. [2023-12-22 01:51:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:51:00,157 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.875) internal successors, (222), 16 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-22 01:51:00,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:00,181 INFO L225 Difference]: With dead ends: 30786 [2023-12-22 01:51:00,182 INFO L226 Difference]: Without dead ends: 22432 [2023-12-22 01:51:00,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:51:00,193 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 6564 mSDsluCounter, 12448 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6564 SdHoareTripleChecker+Valid, 14029 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:00,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6564 Valid, 14029 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:51:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22432 states. [2023-12-22 01:51:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22432 to 18874. [2023-12-22 01:51:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18874 states, 18872 states have (on average 1.351208139041967) internal successors, (25500), 18873 states have internal predecessors, (25500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18874 states to 18874 states and 25500 transitions. [2023-12-22 01:51:00,655 INFO L78 Accepts]: Start accepts. Automaton has 18874 states and 25500 transitions. Word has length 115 [2023-12-22 01:51:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:00,655 INFO L495 AbstractCegarLoop]: Abstraction has 18874 states and 25500 transitions. [2023-12-22 01:51:00,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.875) internal successors, (222), 16 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 18874 states and 25500 transitions. [2023-12-22 01:51:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-22 01:51:00,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:00,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:00,664 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 [2023-12-22 01:51:00,860 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 [2023-12-22 01:51:00,860 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:00,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1048170391, now seen corresponding path program 1 times [2023-12-22 01:51:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356301534] [2023-12-22 01:51:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:00,861 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 [2023-12-22 01:51:00,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:00,862 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) [2023-12-22 01:51:00,863 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 [2023-12-22 01:51:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:00,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:00,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:01,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:01,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356301534] [2023-12-22 01:51:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356301534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:01,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:01,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630459087] [2023-12-22 01:51:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:01,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:01,008 INFO L87 Difference]: Start difference. First operand 18874 states and 25500 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:01,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:01,275 INFO L93 Difference]: Finished difference Result 27518 states and 36926 transitions. [2023-12-22 01:51:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:01,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-22 01:51:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:01,283 INFO L225 Difference]: With dead ends: 27518 [2023-12-22 01:51:01,283 INFO L226 Difference]: Without dead ends: 10236 [2023-12-22 01:51:01,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:01,288 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 39 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:01,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10236 states. [2023-12-22 01:51:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10236 to 10234. [2023-12-22 01:51:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10234 states, 10232 states have (on average 1.3569194683346364) internal successors, (13884), 10233 states have internal predecessors, (13884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10234 states to 10234 states and 13884 transitions. [2023-12-22 01:51:01,491 INFO L78 Accepts]: Start accepts. Automaton has 10234 states and 13884 transitions. Word has length 117 [2023-12-22 01:51:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:01,491 INFO L495 AbstractCegarLoop]: Abstraction has 10234 states and 13884 transitions. [2023-12-22 01:51:01,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:01,492 INFO L276 IsEmpty]: Start isEmpty. Operand 10234 states and 13884 transitions. [2023-12-22 01:51:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 01:51:01,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:01,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:01,496 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 [2023-12-22 01:51:01,696 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 [2023-12-22 01:51:01,696 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:01,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1870094945, now seen corresponding path program 1 times [2023-12-22 01:51:01,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:01,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638584740] [2023-12-22 01:51:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:01,697 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 [2023-12-22 01:51:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:01,698 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) [2023-12-22 01:51:01,699 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 [2023-12-22 01:51:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:01,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:51:01,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:02,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:02,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638584740] [2023-12-22 01:51:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638584740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:02,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:02,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:51:02,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543958604] [2023-12-22 01:51:02,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:02,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:51:02,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:51:02,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:51:02,982 INFO L87 Difference]: Start difference. First operand 10234 states and 13884 transitions. Second operand has 16 states, 16 states have (on average 14.375) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:04,555 INFO L93 Difference]: Finished difference Result 26210 states and 34608 transitions. [2023-12-22 01:51:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 01:51:04,556 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.375) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-22 01:51:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:04,577 INFO L225 Difference]: With dead ends: 26210 [2023-12-22 01:51:04,577 INFO L226 Difference]: Without dead ends: 17568 [2023-12-22 01:51:04,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 01:51:04,588 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 6388 mSDsluCounter, 13891 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6388 SdHoareTripleChecker+Valid, 15454 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:04,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6388 Valid, 15454 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 01:51:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17568 states. [2023-12-22 01:51:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17568 to 16378. [2023-12-22 01:51:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16378 states, 16376 states have (on average 1.3246213971665852) internal successors, (21692), 16377 states have internal predecessors, (21692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16378 states to 16378 states and 21692 transitions. [2023-12-22 01:51:05,061 INFO L78 Accepts]: Start accepts. Automaton has 16378 states and 21692 transitions. Word has length 118 [2023-12-22 01:51:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:05,062 INFO L495 AbstractCegarLoop]: Abstraction has 16378 states and 21692 transitions. [2023-12-22 01:51:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.375) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 16378 states and 21692 transitions. [2023-12-22 01:51:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-22 01:51:05,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:05,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:05,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-22 01:51:05,264 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 [2023-12-22 01:51:05,264 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:05,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1520115031, now seen corresponding path program 1 times [2023-12-22 01:51:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:05,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455781198] [2023-12-22 01:51:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:05,265 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 [2023-12-22 01:51:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:05,266 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) [2023-12-22 01:51:05,266 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 [2023-12-22 01:51:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:05,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 01:51:05,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:51:05,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:51:05,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455781198] [2023-12-22 01:51:05,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455781198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:05,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:05,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 01:51:05,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031664461] [2023-12-22 01:51:05,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:05,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 01:51:05,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:05,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 01:51:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 01:51:05,647 INFO L87 Difference]: Start difference. First operand 16378 states and 21692 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:06,675 INFO L93 Difference]: Finished difference Result 59124 states and 76033 transitions. [2023-12-22 01:51:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 01:51:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-22 01:51:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:06,731 INFO L225 Difference]: With dead ends: 59124 [2023-12-22 01:51:06,731 INFO L226 Difference]: Without dead ends: 44338 [2023-12-22 01:51:06,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-22 01:51:06,755 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 3069 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3069 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:06,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3069 Valid, 3395 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44338 states. [2023-12-22 01:51:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44338 to 43470. [2023-12-22 01:51:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43470 states, 43468 states have (on average 1.2543940369927302) internal successors, (54526), 43469 states have internal predecessors, (54526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43470 states to 43470 states and 54526 transitions. [2023-12-22 01:51:07,924 INFO L78 Accepts]: Start accepts. Automaton has 43470 states and 54526 transitions. Word has length 120 [2023-12-22 01:51:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:07,924 INFO L495 AbstractCegarLoop]: Abstraction has 43470 states and 54526 transitions. [2023-12-22 01:51:07,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 43470 states and 54526 transitions. [2023-12-22 01:51:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-22 01:51:07,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:07,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:07,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-22 01:51:08,127 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 [2023-12-22 01:51:08,127 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:08,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash -417932155, now seen corresponding path program 1 times [2023-12-22 01:51:08,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:08,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655646513] [2023-12-22 01:51:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:08,128 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 [2023-12-22 01:51:08,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:08,129 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) [2023-12-22 01:51:08,130 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 [2023-12-22 01:51:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:08,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:51:08,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-22 01:51:08,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-22 01:51:09,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:09,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655646513] [2023-12-22 01:51:09,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655646513] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:09,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:09,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2023-12-22 01:51:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637304866] [2023-12-22 01:51:09,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:09,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 01:51:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 01:51:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 01:51:09,139 INFO L87 Difference]: Start difference. First operand 43470 states and 54526 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:52:22,893 INFO L93 Difference]: Finished difference Result 48803 states and 63426 transitions. [2023-12-22 01:52:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 01:52:22,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-22 01:52:22,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:52:22,932 INFO L225 Difference]: With dead ends: 48803 [2023-12-22 01:52:22,932 INFO L226 Difference]: Without dead ends: 47299 [2023-12-22 01:52:22,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-22 01:52:22,939 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 3128 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5845 mSolverCounterSat, 2553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3128 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 8398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2553 IncrementalHoareTripleChecker+Valid, 5845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:52:22,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3128 Valid, 195 Invalid, 8398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2553 Valid, 5845 Invalid, 0 Unknown, 0 Unchecked, 72.3s Time] [2023-12-22 01:52:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47299 states. [2023-12-22 01:52:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47299 to 47225. [2023-12-22 01:52:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47223 states have (on average 1.2561463693539165) internal successors, (59319), 47224 states have internal predecessors, (59319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 59319 transitions. [2023-12-22 01:52:24,236 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 59319 transitions. Word has length 130 [2023-12-22 01:52:24,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:52:24,236 INFO L495 AbstractCegarLoop]: Abstraction has 47225 states and 59319 transitions. [2023-12-22 01:52:24,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:24,236 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 59319 transitions. [2023-12-22 01:52:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-22 01:52:24,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:52:24,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:52:24,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-22 01:52:24,448 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 [2023-12-22 01:52:24,448 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:52:24,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:52:24,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1132120515, now seen corresponding path program 1 times [2023-12-22 01:52:24,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:52:24,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434500710] [2023-12-22 01:52:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:52:24,449 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 [2023-12-22 01:52:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:52:24,450 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) [2023-12-22 01:52:24,451 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 [2023-12-22 01:52:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:52:24,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:52:24,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:52:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:25,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:52:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:26,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:52:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434500710] [2023-12-22 01:52:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434500710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:52:26,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:52:26,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:52:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583652959] [2023-12-22 01:52:26,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:52:26,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:52:26,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:52:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:52:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:52:26,490 INFO L87 Difference]: Start difference. First operand 47225 states and 59319 transitions. Second operand has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 25 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:52:29,362 INFO L93 Difference]: Finished difference Result 75457 states and 94635 transitions. [2023-12-22 01:52:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 01:52:29,362 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 25 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-22 01:52:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:52:29,410 INFO L225 Difference]: With dead ends: 75457 [2023-12-22 01:52:29,410 INFO L226 Difference]: Without dead ends: 47679 [2023-12-22 01:52:29,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 01:52:29,430 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 15417 mSDsluCounter, 8143 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15417 SdHoareTripleChecker+Valid, 9702 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:52:29,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15417 Valid, 9702 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:52:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47679 states. [2023-12-22 01:52:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47679 to 47225. [2023-12-22 01:52:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47223 states have (on average 1.2466594667852529) internal successors, (58871), 47224 states have internal predecessors, (58871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 58871 transitions. [2023-12-22 01:52:30,997 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 58871 transitions. Word has length 177 [2023-12-22 01:52:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:52:30,998 INFO L495 AbstractCegarLoop]: Abstraction has 47225 states and 58871 transitions. [2023-12-22 01:52:30,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 25 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 58871 transitions. [2023-12-22 01:52:31,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-22 01:52:31,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:52:31,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:52:31,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-22 01:52:31,209 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 [2023-12-22 01:52:31,210 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:52:31,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:52:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1515721733, now seen corresponding path program 1 times [2023-12-22 01:52:31,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:52:31,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365261728] [2023-12-22 01:52:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:52:31,211 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 [2023-12-22 01:52:31,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:52:31,212 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) [2023-12-22 01:52:31,214 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 [2023-12-22 01:52:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:52:31,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:52:31,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:52:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 54 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:32,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:52:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 54 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:33,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:52:33,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365261728] [2023-12-22 01:52:33,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365261728] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:52:33,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:52:33,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:52:33,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936995849] [2023-12-22 01:52:33,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:52:33,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:52:33,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:52:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:52:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:52:33,139 INFO L87 Difference]: Start difference. First operand 47225 states and 58871 transitions. Second operand has 26 states, 26 states have (on average 12.615384615384615) internal successors, (328), 25 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:52:36,484 INFO L93 Difference]: Finished difference Result 84909 states and 105530 transitions. [2023-12-22 01:52:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 01:52:36,484 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.615384615384615) internal successors, (328), 25 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2023-12-22 01:52:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:52:36,532 INFO L225 Difference]: With dead ends: 84909 [2023-12-22 01:52:36,533 INFO L226 Difference]: Without dead ends: 47227 [2023-12-22 01:52:36,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=403, Invalid=1489, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 01:52:36,549 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 15283 mSDsluCounter, 9772 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15283 SdHoareTripleChecker+Valid, 11331 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:52:36,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15283 Valid, 11331 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 01:52:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47227 states. [2023-12-22 01:52:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47227 to 47225. [2023-12-22 01:52:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47223 states have (on average 1.237850200114351) internal successors, (58455), 47224 states have internal predecessors, (58455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 58455 transitions. [2023-12-22 01:52:38,227 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 58455 transitions. Word has length 178 [2023-12-22 01:52:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:52:38,228 INFO L495 AbstractCegarLoop]: Abstraction has 47225 states and 58455 transitions. [2023-12-22 01:52:38,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.615384615384615) internal successors, (328), 25 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 58455 transitions. [2023-12-22 01:52:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-22 01:52:38,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:52:38,239 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:52:38,242 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 [2023-12-22 01:52:38,441 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 [2023-12-22 01:52:38,441 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:52:38,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:52:38,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1735729581, now seen corresponding path program 1 times [2023-12-22 01:52:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:52:38,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666568150] [2023-12-22 01:52:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:52:38,442 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 [2023-12-22 01:52:38,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:52:38,443 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) [2023-12-22 01:52:38,443 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 [2023-12-22 01:52:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:52:38,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:52:38,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:52:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 46 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:39,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:52:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 46 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:40,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:52:40,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666568150] [2023-12-22 01:52:40,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666568150] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:52:40,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:52:40,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:52:40,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773873602] [2023-12-22 01:52:40,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:52:40,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:52:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:52:40,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:52:40,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:52:40,325 INFO L87 Difference]: Start difference. First operand 47225 states and 58455 transitions. Second operand has 26 states, 26 states have (on average 12.846153846153847) internal successors, (334), 25 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:52:48,592 INFO L93 Difference]: Finished difference Result 201749 states and 251132 transitions. [2023-12-22 01:52:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-22 01:52:48,592 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.846153846153847) internal successors, (334), 25 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-12-22 01:52:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:52:48,788 INFO L225 Difference]: With dead ends: 201749 [2023-12-22 01:52:48,789 INFO L226 Difference]: Without dead ends: 183635 [2023-12-22 01:52:48,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1484, Invalid=7636, Unknown=0, NotChecked=0, Total=9120 [2023-12-22 01:52:48,811 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 19836 mSDsluCounter, 9979 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19836 SdHoareTripleChecker+Valid, 11538 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 01:52:48,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19836 Valid, 11538 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 01:52:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183635 states. [2023-12-22 01:52:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183635 to 47225. [2023-12-22 01:52:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47223 states have (on average 1.2331067488300194) internal successors, (58231), 47224 states have internal predecessors, (58231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 58231 transitions. [2023-12-22 01:52:51,600 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 58231 transitions. Word has length 179 [2023-12-22 01:52:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:52:51,600 INFO L495 AbstractCegarLoop]: Abstraction has 47225 states and 58231 transitions. [2023-12-22 01:52:51,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.846153846153847) internal successors, (334), 25 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 58231 transitions. [2023-12-22 01:52:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-22 01:52:51,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:52:51,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:52:51,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-22 01:52:51,812 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 [2023-12-22 01:52:51,812 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:52:51,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:52:51,813 INFO L85 PathProgramCache]: Analyzing trace with hash 909832843, now seen corresponding path program 1 times [2023-12-22 01:52:51,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:52:51,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791566861] [2023-12-22 01:52:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:52:51,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:52:51,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:52:51,815 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) [2023-12-22 01:52:51,816 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 (34)] Waiting until timeout for monitored process [2023-12-22 01:52:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:52:51,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:52:51,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:52:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:53,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:52:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:52:53,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:52:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791566861] [2023-12-22 01:52:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791566861] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:52:53,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:52:53,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:52:53,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241829156] [2023-12-22 01:52:53,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:52:53,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:52:53,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:52:53,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:52:53,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:52:53,776 INFO L87 Difference]: Start difference. First operand 47225 states and 58231 transitions. Second operand has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:52:57,236 INFO L93 Difference]: Finished difference Result 71201 states and 87867 transitions. [2023-12-22 01:52:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:52:57,237 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2023-12-22 01:52:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:52:57,300 INFO L225 Difference]: With dead ends: 71201 [2023-12-22 01:52:57,300 INFO L226 Difference]: Without dead ends: 53663 [2023-12-22 01:52:57,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:52:57,314 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 15575 mSDsluCounter, 8224 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15575 SdHoareTripleChecker+Valid, 9783 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:52:57,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15575 Valid, 9783 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:52:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53663 states. [2023-12-22 01:52:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53663 to 47225. [2023-12-22 01:52:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47223 states have (on average 1.2283632975456875) internal successors, (58007), 47224 states have internal predecessors, (58007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 58007 transitions. [2023-12-22 01:52:59,396 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 58007 transitions. Word has length 180 [2023-12-22 01:52:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:52:59,396 INFO L495 AbstractCegarLoop]: Abstraction has 47225 states and 58007 transitions. [2023-12-22 01:52:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:52:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 58007 transitions. [2023-12-22 01:52:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-22 01:52:59,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:52:59,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:52:59,411 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 [2023-12-22 01:52:59,607 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 [2023-12-22 01:52:59,608 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:52:59,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:52:59,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2030987491, now seen corresponding path program 1 times [2023-12-22 01:52:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:52:59,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021261745] [2023-12-22 01:52:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:52:59,609 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 [2023-12-22 01:52:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:52:59,610 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) [2023-12-22 01:52:59,610 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 [2023-12-22 01:52:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:52:59,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:52:59,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 30 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:01,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:53:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 30 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:01,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021261745] [2023-12-22 01:53:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021261745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:53:01,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:53:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:53:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768321647] [2023-12-22 01:53:01,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:53:01,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:53:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:53:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:53:01,805 INFO L87 Difference]: Start difference. First operand 47225 states and 58007 transitions. Second operand has 26 states, 26 states have (on average 13.307692307692308) internal successors, (346), 25 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:05,170 INFO L93 Difference]: Finished difference Result 68609 states and 84251 transitions. [2023-12-22 01:53:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:53:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.307692307692308) internal successors, (346), 25 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2023-12-22 01:53:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:05,238 INFO L225 Difference]: With dead ends: 68609 [2023-12-22 01:53:05,238 INFO L226 Difference]: Without dead ends: 51647 [2023-12-22 01:53:05,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:53:05,253 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 18292 mSDsluCounter, 8117 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18292 SdHoareTripleChecker+Valid, 9676 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:05,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18292 Valid, 9676 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 01:53:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51647 states. [2023-12-22 01:53:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51647 to 47225. [2023-12-22 01:53:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47223 states have (on average 1.2236198462613557) internal successors, (57783), 47224 states have internal predecessors, (57783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 57783 transitions. [2023-12-22 01:53:07,302 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 57783 transitions. Word has length 181 [2023-12-22 01:53:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:07,302 INFO L495 AbstractCegarLoop]: Abstraction has 47225 states and 57783 transitions. [2023-12-22 01:53:07,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.307692307692308) internal successors, (346), 25 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 57783 transitions. [2023-12-22 01:53:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-22 01:53:07,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:07,311 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:53:07,314 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 [2023-12-22 01:53:07,511 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 [2023-12-22 01:53:07,512 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:07,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash 316344603, now seen corresponding path program 1 times [2023-12-22 01:53:07,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:07,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368478718] [2023-12-22 01:53:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:07,520 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 [2023-12-22 01:53:07,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:07,521 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) [2023-12-22 01:53:07,522 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 [2023-12-22 01:53:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:07,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:53:07,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:08,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:53:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:09,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:09,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368478718] [2023-12-22 01:53:09,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368478718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:53:09,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:53:09,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:53:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959508719] [2023-12-22 01:53:09,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:53:09,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:53:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:53:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:53:09,453 INFO L87 Difference]: Start difference. First operand 47225 states and 57783 transitions. Second operand has 26 states, 26 states have (on average 13.538461538461538) internal successors, (352), 25 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:13,114 INFO L93 Difference]: Finished difference Result 66017 states and 80635 transitions. [2023-12-22 01:53:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:53:13,115 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.538461538461538) internal successors, (352), 25 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-22 01:53:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:13,168 INFO L225 Difference]: With dead ends: 66017 [2023-12-22 01:53:13,168 INFO L226 Difference]: Without dead ends: 49631 [2023-12-22 01:53:13,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:53:13,183 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 21535 mSDsluCounter, 8064 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21535 SdHoareTripleChecker+Valid, 9623 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:13,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21535 Valid, 9623 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:53:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49631 states. [2023-12-22 01:53:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49631 to 47225. [2023-12-22 01:53:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47223 states have (on average 1.2188763949770238) internal successors, (57559), 47224 states have internal predecessors, (57559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 57559 transitions. [2023-12-22 01:53:15,277 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 57559 transitions. Word has length 182 [2023-12-22 01:53:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:15,278 INFO L495 AbstractCegarLoop]: Abstraction has 47225 states and 57559 transitions. [2023-12-22 01:53:15,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.538461538461538) internal successors, (352), 25 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 57559 transitions. [2023-12-22 01:53:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:53:15,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:15,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:53:15,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-22 01:53:15,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:15,487 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:15,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1426875415, now seen corresponding path program 1 times [2023-12-22 01:53:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:15,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026012474] [2023-12-22 01:53:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:15,488 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 [2023-12-22 01:53:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:15,489 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:15,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-22 01:53:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:15,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:53:15,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 22 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:17,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:53:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 22 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:18,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:18,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026012474] [2023-12-22 01:53:18,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026012474] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:53:18,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:53:18,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:53:18,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356168451] [2023-12-22 01:53:18,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:53:18,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:53:18,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:53:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:53:18,301 INFO L87 Difference]: Start difference. First operand 47225 states and 57559 transitions. Second operand has 26 states, 26 states have (on average 13.653846153846153) internal successors, (355), 26 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:26,249 INFO L93 Difference]: Finished difference Result 73211 states and 88528 transitions. [2023-12-22 01:53:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:53:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.653846153846153) internal successors, (355), 26 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 01:53:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:26,322 INFO L225 Difference]: With dead ends: 73211 [2023-12-22 01:53:26,322 INFO L226 Difference]: Without dead ends: 66425 [2023-12-22 01:53:26,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:53:26,338 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 5355 mSDsluCounter, 22609 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5355 SdHoareTripleChecker+Valid, 24282 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:26,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5355 Valid, 24282 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2619 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 01:53:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66425 states. [2023-12-22 01:53:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66425 to 34377. [2023-12-22 01:53:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34377 states, 34375 states have (on average 1.2271418181818181) internal successors, (42183), 34376 states have internal predecessors, (42183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34377 states to 34377 states and 42183 transitions. [2023-12-22 01:53:28,451 INFO L78 Accepts]: Start accepts. Automaton has 34377 states and 42183 transitions. Word has length 183 [2023-12-22 01:53:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:28,464 INFO L495 AbstractCegarLoop]: Abstraction has 34377 states and 42183 transitions. [2023-12-22 01:53:28,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.653846153846153) internal successors, (355), 26 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 34377 states and 42183 transitions. [2023-12-22 01:53:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:53:28,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:28,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:53:28,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-22 01:53:28,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:28,688 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:28,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1072169843, now seen corresponding path program 1 times [2023-12-22 01:53:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295740982] [2023-12-22 01:53:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:28,689 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 [2023-12-22 01:53:28,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:28,690 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 01:53:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:28,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:53:28,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 13 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:30,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:53:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 13 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:31,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:31,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295740982] [2023-12-22 01:53:31,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295740982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:53:31,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:53:31,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:53:31,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345486259] [2023-12-22 01:53:31,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:53:31,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:53:31,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:53:31,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:53:31,133 INFO L87 Difference]: Start difference. First operand 34377 states and 42183 transitions. Second operand has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 26 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:40,099 INFO L93 Difference]: Finished difference Result 83875 states and 100652 transitions. [2023-12-22 01:53:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 01:53:40,100 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 26 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 01:53:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:40,177 INFO L225 Difference]: With dead ends: 83875 [2023-12-22 01:53:40,177 INFO L226 Difference]: Without dead ends: 69833 [2023-12-22 01:53:40,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 01:53:40,190 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 4131 mSDsluCounter, 22465 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 24125 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:40,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 24125 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-22 01:53:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69833 states. [2023-12-22 01:53:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69833 to 39305. [2023-12-22 01:53:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39305 states, 39303 states have (on average 1.218507493066687) internal successors, (47891), 39304 states have internal predecessors, (47891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39305 states to 39305 states and 47891 transitions. [2023-12-22 01:53:42,507 INFO L78 Accepts]: Start accepts. Automaton has 39305 states and 47891 transitions. Word has length 183 [2023-12-22 01:53:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:42,507 INFO L495 AbstractCegarLoop]: Abstraction has 39305 states and 47891 transitions. [2023-12-22 01:53:42,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 26 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 39305 states and 47891 transitions. [2023-12-22 01:53:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:53:42,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:42,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:53:42,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-12-22 01:53:42,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:42,713 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:42,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1082209805, now seen corresponding path program 1 times [2023-12-22 01:53:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150688367] [2023-12-22 01:53:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:42,714 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 [2023-12-22 01:53:42,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:42,715 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:42,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-22 01:53:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:42,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:53:42,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 31 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:44,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:53:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 31 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:45,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:45,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150688367] [2023-12-22 01:53:45,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150688367] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:53:45,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:53:45,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:53:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105541397] [2023-12-22 01:53:45,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:53:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:53:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:53:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:53:45,612 INFO L87 Difference]: Start difference. First operand 39305 states and 47891 transitions. Second operand has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:55,704 INFO L93 Difference]: Finished difference Result 66675 states and 80440 transitions. [2023-12-22 01:53:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:53:55,705 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 01:53:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:55,770 INFO L225 Difference]: With dead ends: 66675 [2023-12-22 01:53:55,770 INFO L226 Difference]: Without dead ends: 59329 [2023-12-22 01:53:55,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:53:55,780 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 4135 mSDsluCounter, 29237 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4135 SdHoareTripleChecker+Valid, 30920 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:55,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4135 Valid, 30920 Invalid, 3456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-22 01:53:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59329 states. [2023-12-22 01:53:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59329 to 49381. [2023-12-22 01:53:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49381 states, 49379 states have (on average 1.2122359707567993) internal successors, (59859), 49380 states have internal predecessors, (59859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49381 states to 49381 states and 59859 transitions. [2023-12-22 01:53:58,835 INFO L78 Accepts]: Start accepts. Automaton has 49381 states and 59859 transitions. Word has length 183 [2023-12-22 01:53:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:58,835 INFO L495 AbstractCegarLoop]: Abstraction has 49381 states and 59859 transitions. [2023-12-22 01:53:58,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 49381 states and 59859 transitions. [2023-12-22 01:53:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:53:58,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:58,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:53:58,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-22 01:53:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:59,046 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:59,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash -584209001, now seen corresponding path program 1 times [2023-12-22 01:53:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:59,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311421599] [2023-12-22 01:53:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:59,047 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 [2023-12-22 01:53:59,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:59,048 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:59,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-22 01:53:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:59,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:53:59,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:54:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:01,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:54:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:01,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:54:01,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311421599] [2023-12-22 01:54:01,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311421599] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:54:01,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:54:01,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:54:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989298290] [2023-12-22 01:54:01,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:54:01,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:54:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:54:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:54:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:54:01,723 INFO L87 Difference]: Start difference. First operand 49381 states and 59859 transitions. Second operand has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:54:13,069 INFO L93 Difference]: Finished difference Result 87488 states and 105182 transitions. [2023-12-22 01:54:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:54:13,070 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 01:54:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:54:13,147 INFO L225 Difference]: With dead ends: 87488 [2023-12-22 01:54:13,148 INFO L226 Difference]: Without dead ends: 77530 [2023-12-22 01:54:13,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:54:13,158 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 2266 mSDsluCounter, 31238 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 32935 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:54:13,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2266 Valid, 32935 Invalid, 3898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [15 Valid, 3883 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-22 01:54:13,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77530 states. [2023-12-22 01:54:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77530 to 62688. [2023-12-22 01:54:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62688 states, 62686 states have (on average 1.2068085377915323) internal successors, (75650), 62687 states have internal predecessors, (75650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62688 states to 62688 states and 75650 transitions. [2023-12-22 01:54:17,081 INFO L78 Accepts]: Start accepts. Automaton has 62688 states and 75650 transitions. Word has length 183 [2023-12-22 01:54:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:54:17,081 INFO L495 AbstractCegarLoop]: Abstraction has 62688 states and 75650 transitions. [2023-12-22 01:54:17,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 62688 states and 75650 transitions. [2023-12-22 01:54:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:54:17,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:54:17,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:54:17,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-22 01:54:17,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:17,292 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:54:17,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:54:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1875939213, now seen corresponding path program 1 times [2023-12-22 01:54:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:54:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921147964] [2023-12-22 01:54:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:54:17,293 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 [2023-12-22 01:54:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:54:17,294 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:54:17,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-22 01:54:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:54:17,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:54:17,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:54:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 49 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:19,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:54:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 49 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:19,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:54:19,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921147964] [2023-12-22 01:54:19,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921147964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:54:19,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:54:19,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:54:19,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96124110] [2023-12-22 01:54:19,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:54:19,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:54:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:54:19,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:54:19,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:54:19,668 INFO L87 Difference]: Start difference. First operand 62688 states and 75650 transitions. Second operand has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 26 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:54:28,209 INFO L93 Difference]: Finished difference Result 117198 states and 141247 transitions. [2023-12-22 01:54:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-22 01:54:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 26 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 01:54:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:54:28,342 INFO L225 Difference]: With dead ends: 117198 [2023-12-22 01:54:28,342 INFO L226 Difference]: Without dead ends: 103694 [2023-12-22 01:54:28,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=321, Invalid=2031, Unknown=0, NotChecked=0, Total=2352 [2023-12-22 01:54:28,365 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 4946 mSDsluCounter, 23738 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 25342 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:54:28,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 25342 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-22 01:54:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103694 states. [2023-12-22 01:54:34,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103694 to 95340. [2023-12-22 01:54:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95340 states, 95338 states have (on average 1.2005076674568378) internal successors, (114454), 95339 states have internal predecessors, (114454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95340 states to 95340 states and 114454 transitions. [2023-12-22 01:54:34,403 INFO L78 Accepts]: Start accepts. Automaton has 95340 states and 114454 transitions. Word has length 183 [2023-12-22 01:54:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:54:34,403 INFO L495 AbstractCegarLoop]: Abstraction has 95340 states and 114454 transitions. [2023-12-22 01:54:34,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 26 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 95340 states and 114454 transitions. [2023-12-22 01:54:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:54:34,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:54:34,411 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:54:34,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-22 01:54:34,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:34,613 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:54:34,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:54:34,613 INFO L85 PathProgramCache]: Analyzing trace with hash 425793303, now seen corresponding path program 1 times [2023-12-22 01:54:34,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:54:34,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248681809] [2023-12-22 01:54:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:54:34,614 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 [2023-12-22 01:54:34,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:54:34,614 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:54:34,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 01:54:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:54:34,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:54:34,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:54:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 58 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:36,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:54:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 58 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:37,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:54:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248681809] [2023-12-22 01:54:37,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248681809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:54:37,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:54:37,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:54:37,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528986324] [2023-12-22 01:54:37,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:54:37,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:54:37,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:54:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:54:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:54:37,464 INFO L87 Difference]: Start difference. First operand 95340 states and 114454 transitions. Second operand has 26 states, 26 states have (on average 12.884615384615385) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:54:51,376 INFO L93 Difference]: Finished difference Result 174642 states and 209294 transitions. [2023-12-22 01:54:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:54:51,376 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.884615384615385) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 01:54:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:54:51,539 INFO L225 Difference]: With dead ends: 174642 [2023-12-22 01:54:51,539 INFO L226 Difference]: Without dead ends: 137220 [2023-12-22 01:54:51,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:54:51,689 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 2271 mSDsluCounter, 24759 mSDsCounter, 0 mSdLazyCounter, 3167 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 26472 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:54:51,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 26472 Invalid, 3184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3167 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 01:54:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137220 states. [2023-12-22 01:54:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137220 to 115231. [2023-12-22 01:54:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115231 states, 115229 states have (on average 1.192251950463859) internal successors, (137382), 115230 states have internal predecessors, (137382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115231 states to 115231 states and 137382 transitions. [2023-12-22 01:54:59,983 INFO L78 Accepts]: Start accepts. Automaton has 115231 states and 137382 transitions. Word has length 183 [2023-12-22 01:54:59,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:54:59,984 INFO L495 AbstractCegarLoop]: Abstraction has 115231 states and 137382 transitions. [2023-12-22 01:54:59,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.884615384615385) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:59,984 INFO L276 IsEmpty]: Start isEmpty. Operand 115231 states and 137382 transitions. [2023-12-22 01:54:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:54:59,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:54:59,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 01:54:59,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-12-22 01:55:00,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:00,193 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:55:00,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:55:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash 52557555, now seen corresponding path program 1 times [2023-12-22 01:55:00,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:55:00,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271041511] [2023-12-22 01:55:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:55:00,194 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 [2023-12-22 01:55:00,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:55:00,195 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:55:00,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-22 01:55:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:55:00,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:55:00,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:55:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 67 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:01,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:55:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 67 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:02,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:55:02,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271041511] [2023-12-22 01:55:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271041511] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:55:02,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:55:02,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:55:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418517785] [2023-12-22 01:55:02,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:55:02,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:55:02,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:55:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:55:02,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:55:02,692 INFO L87 Difference]: Start difference. First operand 115231 states and 137382 transitions. Second operand has 26 states, 26 states have (on average 12.692307692307692) internal successors, (330), 26 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:55:29,088 INFO L93 Difference]: Finished difference Result 337990 states and 397947 transitions. [2023-12-22 01:55:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 01:55:29,089 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.692307692307692) internal successors, (330), 26 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 01:55:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:55:29,461 INFO L225 Difference]: With dead ends: 337990 [2023-12-22 01:55:29,461 INFO L226 Difference]: Without dead ends: 300211 [2023-12-22 01:55:29,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-22 01:55:29,520 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 5478 mSDsluCounter, 28235 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5478 SdHoareTripleChecker+Valid, 29953 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:55:29,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5478 Valid, 29953 Invalid, 3842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 3820 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-22 01:55:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300211 states. [2023-12-22 01:55:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300211 to 215614. [2023-12-22 01:55:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215614 states, 215612 states have (on average 1.1799946199654936) internal successors, (254421), 215613 states have internal predecessors, (254421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215614 states to 215614 states and 254421 transitions. [2023-12-22 01:55:48,222 INFO L78 Accepts]: Start accepts. Automaton has 215614 states and 254421 transitions. Word has length 183 [2023-12-22 01:55:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:55:48,222 INFO L495 AbstractCegarLoop]: Abstraction has 215614 states and 254421 transitions. [2023-12-22 01:55:48,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.692307692307692) internal successors, (330), 26 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 215614 states and 254421 transitions. [2023-12-22 01:55:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-22 01:55:48,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:55:48,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 01:55:48,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-22 01:55:48,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:48,482 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:55:48,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:55:48,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1928391735, now seen corresponding path program 1 times [2023-12-22 01:55:48,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:55:48,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622407045] [2023-12-22 01:55:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:55:48,484 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 [2023-12-22 01:55:48,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:55:48,485 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:55:48,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-22 01:55:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:55:48,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:55:48,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:55:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-22 01:55:48,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:55:48,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:55:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622407045] [2023-12-22 01:55:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622407045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:55:48,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:55:48,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:55:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601892904] [2023-12-22 01:55:48,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:55:48,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:55:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:55:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:55:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:55:48,951 INFO L87 Difference]: Start difference. First operand 215614 states and 254421 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:56:38,969 INFO L93 Difference]: Finished difference Result 225379 states and 267498 transitions. [2023-12-22 01:56:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:56:38,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-12-22 01:56:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:56:39,258 INFO L225 Difference]: With dead ends: 225379 [2023-12-22 01:56:39,258 INFO L226 Difference]: Without dead ends: 220120 [2023-12-22 01:56:39,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:56:39,282 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 798 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:56:39,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 545 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2601 Invalid, 0 Unknown, 0 Unchecked, 35.3s Time] [2023-12-22 01:56:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220120 states. [2023-12-22 01:56:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220120 to 220120. [2023-12-22 01:56:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220120 states, 220118 states have (on average 1.180507727673339) internal successors, (259851), 220119 states have internal predecessors, (259851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220120 states to 220120 states and 259851 transitions. [2023-12-22 01:56:56,070 INFO L78 Accepts]: Start accepts. Automaton has 220120 states and 259851 transitions. Word has length 235 [2023-12-22 01:56:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:56:56,071 INFO L495 AbstractCegarLoop]: Abstraction has 220120 states and 259851 transitions. [2023-12-22 01:56:56,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 220120 states and 259851 transitions. [2023-12-22 01:56:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-22 01:56:56,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:56:56,386 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:56:56,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-12-22 01:56:56,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:56:56,588 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:56:56,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:56:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1180804925, now seen corresponding path program 2 times [2023-12-22 01:56:56,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:56:56,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595168125] [2023-12-22 01:56:56,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:56:56,589 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 [2023-12-22 01:56:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:56:56,590 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:56:56,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-22 01:56:56,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:56:56,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:56:56,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 01:56:56,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:57:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2023-12-22 01:57:00,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:57:00,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:57:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595168125] [2023-12-22 01:57:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595168125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:57:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:57:00,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 01:57:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138975799] [2023-12-22 01:57:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:57:00,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 01:57:00,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:57:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 01:57:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:57:00,080 INFO L87 Difference]: Start difference. First operand 220120 states and 259851 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:57:21,174 INFO L93 Difference]: Finished difference Result 332864 states and 397700 transitions. [2023-12-22 01:57:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 01:57:21,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-22 01:57:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:57:21,723 INFO L225 Difference]: With dead ends: 332864 [2023-12-22 01:57:21,724 INFO L226 Difference]: Without dead ends: 315942 [2023-12-22 01:57:21,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:57:21,766 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6552 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6552 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:57:21,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6552 Valid, 3635 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 01:57:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315942 states. [2023-12-22 01:57:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315942 to 248310. [2023-12-22 01:57:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248310 states, 248308 states have (on average 1.1775899286370153) internal successors, (292405), 248309 states have internal predecessors, (292405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248310 states to 248310 states and 292405 transitions. [2023-12-22 01:57:43,513 INFO L78 Accepts]: Start accepts. Automaton has 248310 states and 292405 transitions. Word has length 248 [2023-12-22 01:57:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:57:43,513 INFO L495 AbstractCegarLoop]: Abstraction has 248310 states and 292405 transitions. [2023-12-22 01:57:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 248310 states and 292405 transitions. [2023-12-22 01:57:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-22 01:57:43,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:57:43,861 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:57:43,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-12-22 01:57:44,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:57:44,062 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:57:44,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:57:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1535510497, now seen corresponding path program 2 times [2023-12-22 01:57:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:57:44,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868525020] [2023-12-22 01:57:44,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:57:44,063 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 [2023-12-22 01:57:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:57:44,064 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:57:44,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-22 01:57:44,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:57:44,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:57:44,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 01:57:44,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:57:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-22 01:57:47,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:57:47,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:57:47,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868525020] [2023-12-22 01:57:47,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868525020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:57:47,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:57:47,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 01:57:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499893627] [2023-12-22 01:57:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:57:47,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 01:57:47,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:57:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 01:57:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:57:47,577 INFO L87 Difference]: Start difference. First operand 248310 states and 292405 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:58:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:58:07,844 INFO L93 Difference]: Finished difference Result 344407 states and 410722 transitions. [2023-12-22 01:58:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 01:58:07,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-22 01:58:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:58:08,212 INFO L225 Difference]: With dead ends: 344407 [2023-12-22 01:58:08,212 INFO L226 Difference]: Without dead ends: 302054 [2023-12-22 01:58:08,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:58:08,270 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 5098 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:58:08,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5098 Valid, 3703 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 01:58:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302054 states. [2023-12-22 01:58:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302054 to 234422. [2023-12-22 01:58:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234422 states, 234420 states have (on average 1.173615732446037) internal successors, (275119), 234421 states have internal predecessors, (275119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:58:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234422 states to 234422 states and 275119 transitions. [2023-12-22 01:58:27,909 INFO L78 Accepts]: Start accepts. Automaton has 234422 states and 275119 transitions. Word has length 248 [2023-12-22 01:58:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:58:27,909 INFO L495 AbstractCegarLoop]: Abstraction has 234422 states and 275119 transitions. [2023-12-22 01:58:27,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:58:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 234422 states and 275119 transitions. [2023-12-22 01:58:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-22 01:58:27,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:58:27,983 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:58:27,986 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 (46)] Forceful destruction successful, exit code 0 [2023-12-22 01:58:28,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:58:28,184 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:58:28,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:58:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 605077151, now seen corresponding path program 2 times [2023-12-22 01:58:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:58:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109672150] [2023-12-22 01:58:28,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:58:28,185 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 [2023-12-22 01:58:28,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:58:28,186 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-22 01:58:28,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-22 01:58:28,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:58:28,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:58:28,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 01:58:28,531 INFO L285 TraceCheckSpWp]: Computing forward predicates...