/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/eca-rers2012/Problem03_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:34:10,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:34:10,785 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 03:34:10,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:34:10,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:34:10,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:34:10,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:34:10,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:34:10,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:34:10,814 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:34:10,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:34:10,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:34:10,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:34:10,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:34:10,817 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:34:10,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:34:10,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:34:10,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:34:10,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:34:10,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:34:10,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:34:10,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:34:10,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:34:10,819 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:34:10,819 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:34:10,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:34:10,820 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:34:10,820 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:34:10,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:34:10,820 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:34:10,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:34:10,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:34:10,820 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:10,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:34:10,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:34:10,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:34:10,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:34:10,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:34:10,822 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:34:10,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:34:11,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:34:11,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:34:11,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:34:11,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:34:11,041 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:34:11,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label03.c [2023-12-22 03:34:12,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:34:12,295 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:34:12,296 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label03.c [2023-12-22 03:34:12,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720d89749/66d0e6eb89cc427387f5467b0c70adeb/FLAG4d0ee8849 [2023-12-22 03:34:12,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/720d89749/66d0e6eb89cc427387f5467b0c70adeb [2023-12-22 03:34:12,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:34:12,327 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:34:12,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:12,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:34:12,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:34:12,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:12,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cef95f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12, skipping insertion in model container [2023-12-22 03:34:12,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:12,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:34:12,778 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label03.c[56355,56368] [2023-12-22 03:34:12,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:12,817 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:34:12,939 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label03.c[56355,56368] [2023-12-22 03:34:12,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:12,964 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:34:12,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12 WrapperNode [2023-12-22 03:34:12,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:12,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:12,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:34:12,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:34:12,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:12,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,070 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-12-22 03:34:13,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:13,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:34:13,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:34:13,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:34:13,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,121 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 03:34:13,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:34:13,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:34:13,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:34:13,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:34:13,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (1/1) ... [2023-12-22 03:34:13,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:13,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:34:13,223 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 03:34:13,228 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 03:34:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:34:13,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:34:13,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:34:13,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:34:13,295 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:34:13,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:34:14,874 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:34:14,926 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:34:14,926 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:34:14,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:14 BoogieIcfgContainer [2023-12-22 03:34:14,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:34:14,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:34:14,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:34:14,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:34:14,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:34:12" (1/3) ... [2023-12-22 03:34:14,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d06cf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:14, skipping insertion in model container [2023-12-22 03:34:14,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:12" (2/3) ... [2023-12-22 03:34:14,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d06cf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:14, skipping insertion in model container [2023-12-22 03:34:14,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:14" (3/3) ... [2023-12-22 03:34:14,933 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label03.c [2023-12-22 03:34:14,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:34:14,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:34:14,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:34:14,991 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;@264eca86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:34:14,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:34:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 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 03:34:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 03:34:15,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:15,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:15,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:15,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash 481913057, now seen corresponding path program 1 times [2023-12-22 03:34:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:15,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997466936] [2023-12-22 03:34:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:15,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:15,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:15,041 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 03:34:15,064 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 (2)] Waiting until timeout for monitored process [2023-12-22 03:34:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:15,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 03:34:15,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:15,278 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 03:34:15,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:15,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:15,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997466936] [2023-12-22 03:34:15,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997466936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:15,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:15,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:34:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546947196] [2023-12-22 03:34:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 03:34:15,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 03:34:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:34:15,316 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 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 81.5) internal successors, (163), 2 states have internal predecessors, (163), 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 03:34:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:15,364 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-22 03:34:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 03:34:15,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 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 163 [2023-12-22 03:34:15,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:15,375 INFO L225 Difference]: With dead ends: 479 [2023-12-22 03:34:15,375 INFO L226 Difference]: Without dead ends: 238 [2023-12-22 03:34:15,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 162 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 03:34:15,379 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:15,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:34:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-22 03:34:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-22 03:34:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 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 03:34:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-22 03:34:15,427 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 163 [2023-12-22 03:34:15,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:15,427 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-22 03:34:15,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 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 03:34:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-22 03:34:15,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 03:34:15,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:15,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:15,436 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 03:34:15,637 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 03:34:15,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:15,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash 425338288, now seen corresponding path program 1 times [2023-12-22 03:34:15,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:15,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849667396] [2023-12-22 03:34:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:15,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:15,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:15,641 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 03:34:15,645 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 03:34:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:15,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:34:15,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:27,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:27,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:27,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849667396] [2023-12-22 03:34:27,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849667396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:27,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:27,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 03:34:27,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144513742] [2023-12-22 03:34:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:27,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:34:27,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:27,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:34:27,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:34:27,113 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 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 03:34:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:30,242 INFO L93 Difference]: Finished difference Result 588 states and 1007 transitions. [2023-12-22 03:34:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 03:34:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 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 163 [2023-12-22 03:34:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:30,246 INFO L225 Difference]: With dead ends: 588 [2023-12-22 03:34:30,246 INFO L226 Difference]: Without dead ends: 351 [2023-12-22 03:34:30,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:34:30,248 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 406 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:30,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 391 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 03:34:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-22 03:34:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-12-22 03:34:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.46) internal successors, (511), 350 states have internal predecessors, (511), 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 03:34:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 511 transitions. [2023-12-22 03:34:30,263 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 511 transitions. Word has length 163 [2023-12-22 03:34:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:30,266 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 511 transitions. [2023-12-22 03:34:30,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 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 03:34:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 511 transitions. [2023-12-22 03:34:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-22 03:34:30,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:30,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:30,272 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 03:34:30,471 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 03:34:30,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:30,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash 921456863, now seen corresponding path program 1 times [2023-12-22 03:34:30,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:30,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130666208] [2023-12-22 03:34:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:30,476 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 03:34:30,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:30,478 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 03:34:30,479 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 03:34:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:30,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:34:30,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:49,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:49,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:49,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130666208] [2023-12-22 03:34:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130666208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:49,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:49,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-22 03:34:49,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706656148] [2023-12-22 03:34:49,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:49,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 03:34:49,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:49,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 03:34:49,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-22 03:34:49,373 INFO L87 Difference]: Start difference. First operand 351 states and 511 transitions. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 10 states have internal predecessors, (170), 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 03:34:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:54,741 INFO L93 Difference]: Finished difference Result 1140 states and 1873 transitions. [2023-12-22 03:34:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-22 03:34:54,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 10 states have internal predecessors, (170), 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 170 [2023-12-22 03:34:54,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:54,745 INFO L225 Difference]: With dead ends: 1140 [2023-12-22 03:34:54,745 INFO L226 Difference]: Without dead ends: 903 [2023-12-22 03:34:54,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-12-22 03:34:54,747 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1349 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4631 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 4631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:54,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 349 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 4631 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-22 03:34:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-12-22 03:34:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 900. [2023-12-22 03:34:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 1.2491657397107898) internal successors, (1123), 899 states have internal predecessors, (1123), 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 03:34:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1123 transitions. [2023-12-22 03:34:54,770 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1123 transitions. Word has length 170 [2023-12-22 03:34:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:54,770 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1123 transitions. [2023-12-22 03:34:54,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 10 states have internal predecessors, (170), 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 03:34:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1123 transitions. [2023-12-22 03:34:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-22 03:34:54,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:54,772 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:54,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-22 03:34:54,985 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 03:34:54,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:54,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash -892508674, now seen corresponding path program 1 times [2023-12-22 03:34:54,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:54,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106131511] [2023-12-22 03:34:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:54,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:54,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:54,988 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 03:34:54,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 03:34:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:55,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:34:55,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:34:55,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:55,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106131511] [2023-12-22 03:34:55,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106131511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:55,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:55,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:55,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653997874] [2023-12-22 03:34:55,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:55,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:55,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:55,233 INFO L87 Difference]: Start difference. First operand 900 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 03:34:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:56,136 INFO L93 Difference]: Finished difference Result 1762 states and 2394 transitions. [2023-12-22 03:34:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:34:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 03:34:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:56,139 INFO L225 Difference]: With dead ends: 1762 [2023-12-22 03:34:56,139 INFO L226 Difference]: Without dead ends: 1320 [2023-12-22 03:34:56,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 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 03:34:56,143 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 103 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:56,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 337 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:34:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-12-22 03:34:56,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1315. [2023-12-22 03:34:56,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.273972602739726) internal successors, (1674), 1314 states have internal predecessors, (1674), 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 03:34:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1674 transitions. [2023-12-22 03:34:56,171 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1674 transitions. Word has length 178 [2023-12-22 03:34:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:56,172 INFO L495 AbstractCegarLoop]: Abstraction has 1315 states and 1674 transitions. [2023-12-22 03:34:56,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 03:34:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1674 transitions. [2023-12-22 03:34:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-22 03:34:56,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:56,174 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:56,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 03:34:56,380 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 03:34:56,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:56,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash -616159094, now seen corresponding path program 1 times [2023-12-22 03:34:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353606543] [2023-12-22 03:34:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:56,382 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 03:34:56,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:56,383 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 03:34:56,386 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 03:34:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:56,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:34:56,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-22 03:34:56,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:56,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:56,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353606543] [2023-12-22 03:34:56,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353606543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:56,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:56,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:56,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443226365] [2023-12-22 03:34:56,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:56,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:56,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:56,636 INFO L87 Difference]: Start difference. First operand 1315 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 03:34:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:57,630 INFO L93 Difference]: Finished difference Result 2989 states and 4024 transitions. [2023-12-22 03:34:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:34:57,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 184 [2023-12-22 03:34:57,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:57,636 INFO L225 Difference]: With dead ends: 2989 [2023-12-22 03:34:57,637 INFO L226 Difference]: Without dead ends: 2132 [2023-12-22 03:34:57,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 182 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 03:34:57,639 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 88 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:57,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 395 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:34:57,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2023-12-22 03:34:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2130. [2023-12-22 03:34:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2129 states have (on average 1.2883983090652888) internal successors, (2743), 2129 states have internal predecessors, (2743), 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 03:34:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2743 transitions. [2023-12-22 03:34:57,670 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2743 transitions. Word has length 184 [2023-12-22 03:34:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:57,670 INFO L495 AbstractCegarLoop]: Abstraction has 2130 states and 2743 transitions. [2023-12-22 03:34:57,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 03:34:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2743 transitions. [2023-12-22 03:34:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-22 03:34:57,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:57,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:57,686 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 03:34:57,883 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 03:34:57,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:57,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash -880949994, now seen corresponding path program 1 times [2023-12-22 03:34:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:57,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037331976] [2023-12-22 03:34:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:57,886 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 03:34:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:57,901 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 03:34:57,936 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 03:34:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:58,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:34:58,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:58,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:58,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037331976] [2023-12-22 03:34:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037331976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:58,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:34:58,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124714858] [2023-12-22 03:34:58,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:58,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:58,077 INFO L87 Difference]: Start difference. First operand 2130 states and 2743 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 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 03:34:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:59,090 INFO L93 Difference]: Finished difference Result 5035 states and 6771 transitions. [2023-12-22 03:34:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:34:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 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 191 [2023-12-22 03:34:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:59,099 INFO L225 Difference]: With dead ends: 5035 [2023-12-22 03:34:59,099 INFO L226 Difference]: Without dead ends: 3160 [2023-12-22 03:34:59,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 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 03:34:59,102 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 220 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:59,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 225 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:34:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2023-12-22 03:34:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 3160. [2023-12-22 03:34:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 3159 states have (on average 1.2988287432731878) internal successors, (4103), 3159 states have internal predecessors, (4103), 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 03:34:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4103 transitions. [2023-12-22 03:34:59,138 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4103 transitions. Word has length 191 [2023-12-22 03:34:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:59,138 INFO L495 AbstractCegarLoop]: Abstraction has 3160 states and 4103 transitions. [2023-12-22 03:34:59,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 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 03:34:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4103 transitions. [2023-12-22 03:34:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-22 03:34:59,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:59,142 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:59,144 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 (7)] Forceful destruction successful, exit code 0 [2023-12-22 03:34:59,344 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 03:34:59,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:59,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1899644909, now seen corresponding path program 1 times [2023-12-22 03:34:59,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:59,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427830155] [2023-12-22 03:34:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:59,346 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 03:34:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:59,347 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 03:34:59,348 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 03:34:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:59,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:34:59,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-22 03:34:59,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:59,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:59,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427830155] [2023-12-22 03:34:59,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427830155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:59,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:59,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:59,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152753473] [2023-12-22 03:34:59,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:59,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:59,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:59,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:59,629 INFO L87 Difference]: Start difference. First operand 3160 states and 4103 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 03:35:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:00,502 INFO L93 Difference]: Finished difference Result 7494 states and 9928 transitions. [2023-12-22 03:35:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:00,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 197 [2023-12-22 03:35:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:00,516 INFO L225 Difference]: With dead ends: 7494 [2023-12-22 03:35:00,516 INFO L226 Difference]: Without dead ends: 4589 [2023-12-22 03:35:00,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 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 03:35:00,520 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 88 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:00,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 270 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:00,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2023-12-22 03:35:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4587. [2023-12-22 03:35:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4586 states have (on average 1.2884866986480592) internal successors, (5909), 4586 states have internal predecessors, (5909), 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 03:35:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 5909 transitions. [2023-12-22 03:35:00,571 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 5909 transitions. Word has length 197 [2023-12-22 03:35:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:00,571 INFO L495 AbstractCegarLoop]: Abstraction has 4587 states and 5909 transitions. [2023-12-22 03:35:00,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 03:35:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 5909 transitions. [2023-12-22 03:35:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-22 03:35:00,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:00,577 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:00,582 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 03:35:00,780 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 03:35:00,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:00,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1627987611, now seen corresponding path program 1 times [2023-12-22 03:35:00,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:00,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194609326] [2023-12-22 03:35:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:00,782 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 03:35:00,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:00,783 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 03:35:00,787 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 03:35:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:00,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:00,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-22 03:35:00,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:00,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194609326] [2023-12-22 03:35:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194609326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068302971] [2023-12-22 03:35:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:00,934 INFO L87 Difference]: Start difference. First operand 4587 states and 5909 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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 03:35:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:01,397 INFO L93 Difference]: Finished difference Result 8890 states and 11514 transitions. [2023-12-22 03:35:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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 221 [2023-12-22 03:35:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:01,407 INFO L225 Difference]: With dead ends: 8890 [2023-12-22 03:35:01,407 INFO L226 Difference]: Without dead ends: 4558 [2023-12-22 03:35:01,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 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 03:35:01,411 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:01,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 29 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 03:35:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2023-12-22 03:35:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4558. [2023-12-22 03:35:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4558 states, 4557 states have (on average 1.2657450076804915) internal successors, (5768), 4557 states have internal predecessors, (5768), 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 03:35:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4558 states to 4558 states and 5768 transitions. [2023-12-22 03:35:01,463 INFO L78 Accepts]: Start accepts. Automaton has 4558 states and 5768 transitions. Word has length 221 [2023-12-22 03:35:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:01,463 INFO L495 AbstractCegarLoop]: Abstraction has 4558 states and 5768 transitions. [2023-12-22 03:35:01,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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 03:35:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4558 states and 5768 transitions. [2023-12-22 03:35:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-22 03:35:01,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:01,468 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:01,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:01,671 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 03:35:01,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:01,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash 495452022, now seen corresponding path program 1 times [2023-12-22 03:35:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:01,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528410567] [2023-12-22 03:35:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:01,673 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 03:35:01,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:01,674 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 03:35:01,708 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 03:35:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:01,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:01,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-22 03:35:01,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:01,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528410567] [2023-12-22 03:35:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528410567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:01,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:01,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972609771] [2023-12-22 03:35:01,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:01,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:01,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:01,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:01,817 INFO L87 Difference]: Start difference. First operand 4558 states and 5768 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 03:35:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:02,730 INFO L93 Difference]: Finished difference Result 10692 states and 13700 transitions. [2023-12-22 03:35:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 222 [2023-12-22 03:35:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:02,744 INFO L225 Difference]: With dead ends: 10692 [2023-12-22 03:35:02,744 INFO L226 Difference]: Without dead ends: 6389 [2023-12-22 03:35:02,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 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 03:35:02,750 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 204 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:02,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 291 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2023-12-22 03:35:02,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6385. [2023-12-22 03:35:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6385 states, 6384 states have (on average 1.2102130325814537) internal successors, (7726), 6384 states have internal predecessors, (7726), 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 03:35:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 7726 transitions. [2023-12-22 03:35:02,826 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 7726 transitions. Word has length 222 [2023-12-22 03:35:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:02,826 INFO L495 AbstractCegarLoop]: Abstraction has 6385 states and 7726 transitions. [2023-12-22 03:35:02,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 03:35:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 7726 transitions. [2023-12-22 03:35:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-22 03:35:02,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:02,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:02,844 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 03:35:03,037 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 03:35:03,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:03,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:03,039 INFO L85 PathProgramCache]: Analyzing trace with hash 324717532, now seen corresponding path program 1 times [2023-12-22 03:35:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:03,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238331273] [2023-12-22 03:35:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:03,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:03,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:03,041 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 03:35:03,045 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 (11)] Waiting until timeout for monitored process [2023-12-22 03:35:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:03,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:03,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:03,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:03,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:03,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238331273] [2023-12-22 03:35:03,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238331273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:03,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:03,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:03,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351741384] [2023-12-22 03:35:03,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:03,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:03,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:03,297 INFO L87 Difference]: Start difference. First operand 6385 states and 7726 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 03:35:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:04,226 INFO L93 Difference]: Finished difference Result 16383 states and 20144 transitions. [2023-12-22 03:35:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:04,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 232 [2023-12-22 03:35:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:04,248 INFO L225 Difference]: With dead ends: 16383 [2023-12-22 03:35:04,248 INFO L226 Difference]: Without dead ends: 10253 [2023-12-22 03:35:04,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 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 03:35:04,253 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 168 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:04,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 284 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:04,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10253 states. [2023-12-22 03:35:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10253 to 9227. [2023-12-22 03:35:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9227 states, 9226 states have (on average 1.1948840234120963) internal successors, (11024), 9226 states have internal predecessors, (11024), 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 03:35:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9227 states to 9227 states and 11024 transitions. [2023-12-22 03:35:04,372 INFO L78 Accepts]: Start accepts. Automaton has 9227 states and 11024 transitions. Word has length 232 [2023-12-22 03:35:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:04,372 INFO L495 AbstractCegarLoop]: Abstraction has 9227 states and 11024 transitions. [2023-12-22 03:35:04,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 03:35:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 9227 states and 11024 transitions. [2023-12-22 03:35:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-22 03:35:04,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:04,383 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:04,388 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 03:35:04,586 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 03:35:04,586 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:04,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash -881150687, now seen corresponding path program 1 times [2023-12-22 03:35:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:04,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461875207] [2023-12-22 03:35:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:04,588 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 03:35:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:04,589 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 03:35:04,597 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 03:35:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:04,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:04,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:35:04,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:04,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461875207] [2023-12-22 03:35:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461875207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:04,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:04,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230855899] [2023-12-22 03:35:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:04,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:04,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:04,909 INFO L87 Difference]: Start difference. First operand 9227 states and 11024 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 03:35:06,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:06,284 INFO L93 Difference]: Finished difference Result 21871 states and 26428 transitions. [2023-12-22 03:35:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:06,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 03:35:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:06,319 INFO L225 Difference]: With dead ends: 21871 [2023-12-22 03:35:06,319 INFO L226 Difference]: Without dead ends: 12899 [2023-12-22 03:35:06,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:06,328 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 353 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:06,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 176 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:35:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12899 states. [2023-12-22 03:35:06,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12899 to 12069. [2023-12-22 03:35:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12069 states, 12068 states have (on average 1.2108054358634406) internal successors, (14612), 12068 states have internal predecessors, (14612), 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 03:35:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12069 states to 12069 states and 14612 transitions. [2023-12-22 03:35:06,448 INFO L78 Accepts]: Start accepts. Automaton has 12069 states and 14612 transitions. Word has length 248 [2023-12-22 03:35:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:06,449 INFO L495 AbstractCegarLoop]: Abstraction has 12069 states and 14612 transitions. [2023-12-22 03:35:06,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 03:35:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 12069 states and 14612 transitions. [2023-12-22 03:35:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-22 03:35:06,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:06,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:06,465 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 03:35:06,663 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 03:35:06,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:06,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1545052728, now seen corresponding path program 1 times [2023-12-22 03:35:06,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:06,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486377645] [2023-12-22 03:35:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:06,665 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 03:35:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:06,666 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 03:35:06,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 03:35:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:06,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:06,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:06,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:06,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:06,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486377645] [2023-12-22 03:35:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486377645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:06,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:06,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835841879] [2023-12-22 03:35:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:06,979 INFO L87 Difference]: Start difference. First operand 12069 states and 14612 transitions. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 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 03:35:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:08,069 INFO L93 Difference]: Finished difference Result 27951 states and 34191 transitions. [2023-12-22 03:35:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:08,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 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 251 [2023-12-22 03:35:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:08,094 INFO L225 Difference]: With dead ends: 27951 [2023-12-22 03:35:08,094 INFO L226 Difference]: Without dead ends: 16137 [2023-12-22 03:35:08,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:08,106 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 597 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:08,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 50 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:35:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16137 states. [2023-12-22 03:35:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16137 to 16129. [2023-12-22 03:35:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16129 states, 16128 states have (on average 1.2006448412698412) internal successors, (19364), 16128 states have internal predecessors, (19364), 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 03:35:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 19364 transitions. [2023-12-22 03:35:08,298 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 19364 transitions. Word has length 251 [2023-12-22 03:35:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:08,298 INFO L495 AbstractCegarLoop]: Abstraction has 16129 states and 19364 transitions. [2023-12-22 03:35:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 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 03:35:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 19364 transitions. [2023-12-22 03:35:08,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 03:35:08,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:08,313 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:35:08,328 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 (13)] Ended with exit code 0 [2023-12-22 03:35:08,516 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 03:35:08,516 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:08,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1030095984, now seen corresponding path program 1 times [2023-12-22 03:35:08,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:08,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880405707] [2023-12-22 03:35:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:08,519 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 03:35:08,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:08,520 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 03:35:08,536 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 03:35:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:08,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:08,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:08,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:08,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880405707] [2023-12-22 03:35:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880405707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:08,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:08,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376033226] [2023-12-22 03:35:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:08,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:08,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:08,775 INFO L87 Difference]: Start difference. First operand 16129 states and 19364 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 03:35:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:09,671 INFO L93 Difference]: Finished difference Result 38300 states and 46050 transitions. [2023-12-22 03:35:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:09,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 308 [2023-12-22 03:35:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:09,702 INFO L225 Difference]: With dead ends: 38300 [2023-12-22 03:35:09,702 INFO L226 Difference]: Without dead ends: 22426 [2023-12-22 03:35:09,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 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 03:35:09,716 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 117 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:09,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 257 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22426 states. [2023-12-22 03:35:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22426 to 21407. [2023-12-22 03:35:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21407 states, 21406 states have (on average 1.1763057086798094) internal successors, (25180), 21406 states have internal predecessors, (25180), 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 03:35:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21407 states to 21407 states and 25180 transitions. [2023-12-22 03:35:09,934 INFO L78 Accepts]: Start accepts. Automaton has 21407 states and 25180 transitions. Word has length 308 [2023-12-22 03:35:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:09,934 INFO L495 AbstractCegarLoop]: Abstraction has 21407 states and 25180 transitions. [2023-12-22 03:35:09,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 03:35:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 21407 states and 25180 transitions. [2023-12-22 03:35:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 03:35:09,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:09,953 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:35:09,958 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 03:35:10,158 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 03:35:10,159 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:10,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1937523541, now seen corresponding path program 1 times [2023-12-22 03:35:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:10,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232545135] [2023-12-22 03:35:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:10,161 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 03:35:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:10,162 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 03:35:10,163 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 03:35:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:10,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:10,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-22 03:35:10,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:10,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:10,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232545135] [2023-12-22 03:35:10,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232545135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:10,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:10,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:10,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165095497] [2023-12-22 03:35:10,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:10,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:10,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:10,442 INFO L87 Difference]: Start difference. First operand 21407 states and 25180 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 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 03:35:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:11,335 INFO L93 Difference]: Finished difference Result 42563 states and 50102 transitions. [2023-12-22 03:35:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:11,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 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 308 [2023-12-22 03:35:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:11,360 INFO L225 Difference]: With dead ends: 42563 [2023-12-22 03:35:11,360 INFO L226 Difference]: Without dead ends: 21411 [2023-12-22 03:35:11,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 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 03:35:11,373 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 137 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:11,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 179 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21411 states. [2023-12-22 03:35:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21411 to 21204. [2023-12-22 03:35:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21204 states, 21203 states have (on average 1.14851671933217) internal successors, (24352), 21203 states have internal predecessors, (24352), 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 03:35:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21204 states to 21204 states and 24352 transitions. [2023-12-22 03:35:11,566 INFO L78 Accepts]: Start accepts. Automaton has 21204 states and 24352 transitions. Word has length 308 [2023-12-22 03:35:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:11,566 INFO L495 AbstractCegarLoop]: Abstraction has 21204 states and 24352 transitions. [2023-12-22 03:35:11,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 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 03:35:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21204 states and 24352 transitions. [2023-12-22 03:35:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-22 03:35:11,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:11,581 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:11,584 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 03:35:11,784 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 03:35:11,784 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:11,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash -608383056, now seen corresponding path program 1 times [2023-12-22 03:35:11,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:11,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870155541] [2023-12-22 03:35:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:11,786 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 03:35:11,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:11,787 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 03:35:11,788 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 03:35:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:11,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:11,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-22 03:35:12,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:12,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:12,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870155541] [2023-12-22 03:35:12,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870155541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:12,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:12,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:12,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172519380] [2023-12-22 03:35:12,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:12,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:12,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:12,168 INFO L87 Difference]: Start difference. First operand 21204 states and 24352 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 2 states have internal predecessors, (265), 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 03:35:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:13,153 INFO L93 Difference]: Finished difference Result 44596 states and 51429 transitions. [2023-12-22 03:35:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:13,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 2 states have internal predecessors, (265), 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 308 [2023-12-22 03:35:13,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:13,177 INFO L225 Difference]: With dead ends: 44596 [2023-12-22 03:35:13,177 INFO L226 Difference]: Without dead ends: 23647 [2023-12-22 03:35:13,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 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 03:35:13,190 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:13,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 235 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23647 states. [2023-12-22 03:35:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23647 to 23640. [2023-12-22 03:35:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23640 states, 23639 states have (on average 1.1358771521637971) internal successors, (26851), 23639 states have internal predecessors, (26851), 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 03:35:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23640 states to 23640 states and 26851 transitions. [2023-12-22 03:35:13,400 INFO L78 Accepts]: Start accepts. Automaton has 23640 states and 26851 transitions. Word has length 308 [2023-12-22 03:35:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:13,400 INFO L495 AbstractCegarLoop]: Abstraction has 23640 states and 26851 transitions. [2023-12-22 03:35:13,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 2 states have internal predecessors, (265), 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 03:35:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 23640 states and 26851 transitions. [2023-12-22 03:35:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-22 03:35:13,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:13,415 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:13,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:13,618 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 03:35:13,618 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:13,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2145400571, now seen corresponding path program 1 times [2023-12-22 03:35:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99551785] [2023-12-22 03:35:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:13,621 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 03:35:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:13,622 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 03:35:13,623 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 03:35:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:13,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:13,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-22 03:35:13,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:13,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:13,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99551785] [2023-12-22 03:35:13,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99551785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:13,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:13,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:13,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428753823] [2023-12-22 03:35:13,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:13,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:13,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:13,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:13,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:13,942 INFO L87 Difference]: Start difference. First operand 23640 states and 26851 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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 03:35:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:14,826 INFO L93 Difference]: Finished difference Result 47634 states and 54111 transitions. [2023-12-22 03:35:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:14,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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 329 [2023-12-22 03:35:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:14,848 INFO L225 Difference]: With dead ends: 47634 [2023-12-22 03:35:14,848 INFO L226 Difference]: Without dead ends: 24249 [2023-12-22 03:35:14,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 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 03:35:14,863 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 112 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:14,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 219 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24249 states. [2023-12-22 03:35:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24249 to 23234. [2023-12-22 03:35:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23234 states, 23233 states have (on average 1.0910343046528646) internal successors, (25348), 23233 states have internal predecessors, (25348), 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 03:35:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23234 states to 23234 states and 25348 transitions. [2023-12-22 03:35:15,075 INFO L78 Accepts]: Start accepts. Automaton has 23234 states and 25348 transitions. Word has length 329 [2023-12-22 03:35:15,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:15,076 INFO L495 AbstractCegarLoop]: Abstraction has 23234 states and 25348 transitions. [2023-12-22 03:35:15,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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 03:35:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 23234 states and 25348 transitions. [2023-12-22 03:35:15,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-22 03:35:15,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:15,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:35:15,094 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 03:35:15,292 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 03:35:15,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:15,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash 659759817, now seen corresponding path program 1 times [2023-12-22 03:35:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252059407] [2023-12-22 03:35:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:15,295 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 03:35:15,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:15,296 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 03:35:15,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 03:35:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:15,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:15,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-22 03:35:15,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:15,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:15,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252059407] [2023-12-22 03:35:15,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252059407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:15,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:15,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:15,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026543746] [2023-12-22 03:35:15,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:15,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:15,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:15,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:15,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:15,708 INFO L87 Difference]: Start difference. First operand 23234 states and 25348 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 03:35:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:16,955 INFO L93 Difference]: Finished difference Result 61863 states and 67584 transitions. [2023-12-22 03:35:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:16,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 341 [2023-12-22 03:35:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:16,989 INFO L225 Difference]: With dead ends: 61863 [2023-12-22 03:35:16,989 INFO L226 Difference]: Without dead ends: 38884 [2023-12-22 03:35:17,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:17,007 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 360 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:17,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 369 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:35:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38884 states. [2023-12-22 03:35:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38884 to 35633. [2023-12-22 03:35:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35633 states, 35632 states have (on average 1.0902278850471487) internal successors, (38847), 35632 states have internal predecessors, (38847), 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 03:35:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35633 states to 35633 states and 38847 transitions. [2023-12-22 03:35:17,404 INFO L78 Accepts]: Start accepts. Automaton has 35633 states and 38847 transitions. Word has length 341 [2023-12-22 03:35:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:17,405 INFO L495 AbstractCegarLoop]: Abstraction has 35633 states and 38847 transitions. [2023-12-22 03:35:17,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 03:35:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 35633 states and 38847 transitions. [2023-12-22 03:35:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-22 03:35:17,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:17,420 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:35:17,423 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 03:35:17,622 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 03:35:17,623 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:17,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 508741547, now seen corresponding path program 1 times [2023-12-22 03:35:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:17,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251741676] [2023-12-22 03:35:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:17,625 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 03:35:17,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:17,626 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 03:35:17,627 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 03:35:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:17,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:17,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-22 03:35:18,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:18,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251741676] [2023-12-22 03:35:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251741676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:18,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685351429] [2023-12-22 03:35:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:18,125 INFO L87 Difference]: Start difference. First operand 35633 states and 38847 transitions. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 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 03:35:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:19,571 INFO L93 Difference]: Finished difference Result 70420 states and 76620 transitions. [2023-12-22 03:35:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 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 359 [2023-12-22 03:35:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:19,603 INFO L225 Difference]: With dead ends: 70420 [2023-12-22 03:35:19,603 INFO L226 Difference]: Without dead ends: 35042 [2023-12-22 03:35:19,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:19,625 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 394 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:19,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 205 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:35:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35042 states. [2023-12-22 03:35:19,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35042 to 35024. [2023-12-22 03:35:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35024 states, 35023 states have (on average 1.0644719184535876) internal successors, (37281), 35023 states have internal predecessors, (37281), 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 03:35:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35024 states to 35024 states and 37281 transitions. [2023-12-22 03:35:20,050 INFO L78 Accepts]: Start accepts. Automaton has 35024 states and 37281 transitions. Word has length 359 [2023-12-22 03:35:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:20,050 INFO L495 AbstractCegarLoop]: Abstraction has 35024 states and 37281 transitions. [2023-12-22 03:35:20,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 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 03:35:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 35024 states and 37281 transitions. [2023-12-22 03:35:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-22 03:35:20,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:20,065 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:35:20,071 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 03:35:20,267 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 03:35:20,268 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:20,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1585690873, now seen corresponding path program 1 times [2023-12-22 03:35:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:20,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842078713] [2023-12-22 03:35:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:20,270 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 03:35:20,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:20,271 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 03:35:20,274 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 03:35:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:20,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:20,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-22 03:35:21,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:21,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:21,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842078713] [2023-12-22 03:35:21,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842078713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:21,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:21,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422957690] [2023-12-22 03:35:21,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:21,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:21,040 INFO L87 Difference]: Start difference. First operand 35024 states and 37281 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 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 03:35:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:22,182 INFO L93 Difference]: Finished difference Result 82414 states and 87626 transitions. [2023-12-22 03:35:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 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 372 [2023-12-22 03:35:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:22,235 INFO L225 Difference]: With dead ends: 82414 [2023-12-22 03:35:22,236 INFO L226 Difference]: Without dead ends: 47645 [2023-12-22 03:35:22,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 370 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 03:35:22,264 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 107 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:22,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 226 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47645 states. [2023-12-22 03:35:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47645 to 45207. [2023-12-22 03:35:22,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45207 states, 45206 states have (on average 1.0641065345308145) internal successors, (48104), 45206 states have internal predecessors, (48104), 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 03:35:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45207 states to 45207 states and 48104 transitions. [2023-12-22 03:35:22,811 INFO L78 Accepts]: Start accepts. Automaton has 45207 states and 48104 transitions. Word has length 372 [2023-12-22 03:35:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:22,812 INFO L495 AbstractCegarLoop]: Abstraction has 45207 states and 48104 transitions. [2023-12-22 03:35:22,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 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 03:35:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 45207 states and 48104 transitions. [2023-12-22 03:35:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-22 03:35:22,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:22,827 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:22,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:23,028 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 03:35:23,028 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:23,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1497138845, now seen corresponding path program 1 times [2023-12-22 03:35:23,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:23,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344850861] [2023-12-22 03:35:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:23,031 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 03:35:23,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:23,032 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 03:35:23,033 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 03:35:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:23,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:35:23,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-22 03:35:23,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:23,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344850861] [2023-12-22 03:35:23,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344850861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:23,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:23,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62172497] [2023-12-22 03:35:23,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:23,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:23,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:23,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:23,540 INFO L87 Difference]: Start difference. First operand 45207 states and 48104 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 03:35:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:24,748 INFO L93 Difference]: Finished difference Result 125964 states and 133834 transitions. [2023-12-22 03:35:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 378 [2023-12-22 03:35:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:24,831 INFO L225 Difference]: With dead ends: 125964 [2023-12-22 03:35:24,831 INFO L226 Difference]: Without dead ends: 81012 [2023-12-22 03:35:24,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:24,980 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 543 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:24,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 497 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81012 states. [2023-12-22 03:35:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81012 to 77960. [2023-12-22 03:35:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77960 states, 77959 states have (on average 1.0626611423953616) internal successors, (82844), 77959 states have internal predecessors, (82844), 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 03:35:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77960 states to 77960 states and 82844 transitions. [2023-12-22 03:35:26,011 INFO L78 Accepts]: Start accepts. Automaton has 77960 states and 82844 transitions. Word has length 378 [2023-12-22 03:35:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:26,012 INFO L495 AbstractCegarLoop]: Abstraction has 77960 states and 82844 transitions. [2023-12-22 03:35:26,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 03:35:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 77960 states and 82844 transitions. [2023-12-22 03:35:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-22 03:35:26,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:26,031 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, 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, 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] [2023-12-22 03:35:26,050 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 03:35:26,233 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 03:35:26,233 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:26,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1472383920, now seen corresponding path program 1 times [2023-12-22 03:35:26,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:26,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107885026] [2023-12-22 03:35:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:26,237 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 03:35:26,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:26,238 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 03:35:26,247 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 03:35:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:26,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:35:26,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 40 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:35:45,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:36:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 119 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:36:14,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:14,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107885026] [2023-12-22 03:36:14,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107885026] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:36:14,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:36:14,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-12-22 03:36:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602631331] [2023-12-22 03:36:14,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:36:14,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-22 03:36:14,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-22 03:36:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-22 03:36:14,230 INFO L87 Difference]: Start difference. First operand 77960 states and 82844 transitions. Second operand has 20 states, 20 states have (on average 31.3) internal successors, (626), 19 states have internal predecessors, (626), 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 03:36:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:24,916 INFO L93 Difference]: Finished difference Result 218195 states and 231474 transitions. [2023-12-22 03:36:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-22 03:36:24,917 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 31.3) internal successors, (626), 19 states have internal predecessors, (626), 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 404 [2023-12-22 03:36:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:25,072 INFO L225 Difference]: With dead ends: 218195 [2023-12-22 03:36:25,072 INFO L226 Difference]: Without dead ends: 140490 [2023-12-22 03:36:25,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2023-12-22 03:36:25,136 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 2353 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 8620 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 8720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 8620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:25,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 422 Invalid, 8720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 8620 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-22 03:36:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140490 states. [2023-12-22 03:36:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140490 to 129504. [2023-12-22 03:36:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129504 states, 129503 states have (on average 1.0553964000833957) internal successors, (136677), 129503 states have internal predecessors, (136677), 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 03:36:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129504 states to 129504 states and 136677 transitions. [2023-12-22 03:36:27,087 INFO L78 Accepts]: Start accepts. Automaton has 129504 states and 136677 transitions. Word has length 404 [2023-12-22 03:36:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:27,088 INFO L495 AbstractCegarLoop]: Abstraction has 129504 states and 136677 transitions. [2023-12-22 03:36:27,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 31.3) internal successors, (626), 19 states have internal predecessors, (626), 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 03:36:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 129504 states and 136677 transitions. [2023-12-22 03:36:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-22 03:36:27,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:27,107 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:36:27,111 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 03:36:27,310 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 03:36:27,310 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:27,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1702748197, now seen corresponding path program 1 times [2023-12-22 03:36:27,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:27,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105870167] [2023-12-22 03:36:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:27,313 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 03:36:27,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:27,314 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 03:36:27,314 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 03:36:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:27,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:27,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-22 03:36:27,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:27,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:27,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105870167] [2023-12-22 03:36:27,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105870167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:27,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:27,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935468444] [2023-12-22 03:36:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:27,960 INFO L87 Difference]: Start difference. First operand 129504 states and 136677 transitions. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 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 03:36:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:29,806 INFO L93 Difference]: Finished difference Result 258440 states and 272769 transitions. [2023-12-22 03:36:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:29,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 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 413 [2023-12-22 03:36:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:30,028 INFO L225 Difference]: With dead ends: 258440 [2023-12-22 03:36:30,029 INFO L226 Difference]: Without dead ends: 129514 [2023-12-22 03:36:30,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:30,078 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 316 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:30,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 185 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:36:30,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129514 states. [2023-12-22 03:36:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129514 to 129504. [2023-12-22 03:36:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129504 states, 129503 states have (on average 1.0532111225222582) internal successors, (136394), 129503 states have internal predecessors, (136394), 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 03:36:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129504 states to 129504 states and 136394 transitions. [2023-12-22 03:36:31,858 INFO L78 Accepts]: Start accepts. Automaton has 129504 states and 136394 transitions. Word has length 413 [2023-12-22 03:36:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:31,858 INFO L495 AbstractCegarLoop]: Abstraction has 129504 states and 136394 transitions. [2023-12-22 03:36:31,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 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 03:36:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 129504 states and 136394 transitions. [2023-12-22 03:36:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-22 03:36:31,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:31,878 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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] [2023-12-22 03:36:31,881 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 03:36:32,081 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 03:36:32,081 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:32,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:32,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1979316752, now seen corresponding path program 1 times [2023-12-22 03:36:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375078856] [2023-12-22 03:36:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:32,084 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 03:36:32,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:32,085 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 03:36:32,086 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 03:36:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:32,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:32,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-22 03:36:32,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:32,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:32,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375078856] [2023-12-22 03:36:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375078856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:32,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:36:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124372433] [2023-12-22 03:36:32,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:32,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:36:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:36:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:36:32,501 INFO L87 Difference]: Start difference. First operand 129504 states and 136394 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 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 03:36:34,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:34,543 INFO L93 Difference]: Finished difference Result 382879 states and 403181 transitions. [2023-12-22 03:36:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:36:34,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 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 429 [2023-12-22 03:36:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:34,967 INFO L225 Difference]: With dead ends: 382879 [2023-12-22 03:36:34,967 INFO L226 Difference]: Without dead ends: 253953 [2023-12-22 03:36:35,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 427 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 03:36:35,028 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 235 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:35,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 51 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:36:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253953 states. [2023-12-22 03:36:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253953 to 251508. [2023-12-22 03:36:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251508 states, 251507 states have (on average 1.052702310472472) internal successors, (264762), 251507 states have internal predecessors, (264762), 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 03:36:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251508 states to 251508 states and 264762 transitions. [2023-12-22 03:36:38,664 INFO L78 Accepts]: Start accepts. Automaton has 251508 states and 264762 transitions. Word has length 429 [2023-12-22 03:36:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:38,664 INFO L495 AbstractCegarLoop]: Abstraction has 251508 states and 264762 transitions. [2023-12-22 03:36:38,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 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 03:36:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 251508 states and 264762 transitions. [2023-12-22 03:36:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-22 03:36:38,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:38,683 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:36:38,686 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 03:36:38,886 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 03:36:38,886 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:38,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1794803623, now seen corresponding path program 1 times [2023-12-22 03:36:38,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:38,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174837632] [2023-12-22 03:36:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:38,889 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 03:36:38,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:38,890 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 03:36:38,891 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 03:36:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:39,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:39,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 489 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-22 03:36:39,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:39,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:39,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174837632] [2023-12-22 03:36:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174837632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:39,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:36:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494765626] [2023-12-22 03:36:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:39,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:39,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:39,448 INFO L87 Difference]: Start difference. First operand 251508 states and 264762 transitions. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 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 03:36:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:42,275 INFO L93 Difference]: Finished difference Result 523753 states and 551172 transitions. [2023-12-22 03:36:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:42,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 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 438 [2023-12-22 03:36:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:42,639 INFO L225 Difference]: With dead ends: 523753 [2023-12-22 03:36:42,639 INFO L226 Difference]: Without dead ends: 270792 [2023-12-22 03:36:42,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:42,738 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 318 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:42,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 132 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 03:36:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270792 states. [2023-12-22 03:36:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270792 to 218303. [2023-12-22 03:36:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218303 states, 218302 states have (on average 1.0509386079834357) internal successors, (229422), 218302 states have internal predecessors, (229422), 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 03:36:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218303 states to 218303 states and 229422 transitions. [2023-12-22 03:36:46,449 INFO L78 Accepts]: Start accepts. Automaton has 218303 states and 229422 transitions. Word has length 438 [2023-12-22 03:36:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:46,449 INFO L495 AbstractCegarLoop]: Abstraction has 218303 states and 229422 transitions. [2023-12-22 03:36:46,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 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 03:36:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 218303 states and 229422 transitions. [2023-12-22 03:36:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-22 03:36:46,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:46,467 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:36:46,469 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 03:36:46,667 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 03:36:46,667 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:46,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:46,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1860206174, now seen corresponding path program 1 times [2023-12-22 03:36:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376575209] [2023-12-22 03:36:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:46,670 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 03:36:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:46,671 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 03:36:46,672 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 (26)] Waiting until timeout for monitored process [2023-12-22 03:36:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:46,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:46,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-12-22 03:36:47,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:47,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376575209] [2023-12-22 03:36:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376575209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:47,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:47,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:47,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866072733] [2023-12-22 03:36:47,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:47,142 INFO L87 Difference]: Start difference. First operand 218303 states and 229422 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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 03:36:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:49,891 INFO L93 Difference]: Finished difference Result 589601 states and 618796 transitions. [2023-12-22 03:36:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:49,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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 440 [2023-12-22 03:36:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:50,538 INFO L225 Difference]: With dead ends: 589601 [2023-12-22 03:36:50,538 INFO L226 Difference]: Without dead ends: 371875 [2023-12-22 03:36:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:50,612 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 502 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:50,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 385 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:36:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371875 states. [2023-12-22 03:36:54,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371875 to 309568. [2023-12-22 03:36:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309568 states, 309567 states have (on average 1.0500537848026437) internal successors, (325062), 309567 states have internal predecessors, (325062), 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 03:36:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309568 states to 309568 states and 325062 transitions. [2023-12-22 03:36:55,399 INFO L78 Accepts]: Start accepts. Automaton has 309568 states and 325062 transitions. Word has length 440 [2023-12-22 03:36:55,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:55,399 INFO L495 AbstractCegarLoop]: Abstraction has 309568 states and 325062 transitions. [2023-12-22 03:36:55,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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 03:36:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 309568 states and 325062 transitions. [2023-12-22 03:36:55,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-22 03:36:55,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:55,414 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:55,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 03:36:55,615 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 03:36:55,615 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:55,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash -858653793, now seen corresponding path program 1 times [2023-12-22 03:36:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:55,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78639154] [2023-12-22 03:36:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:55,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:55,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:55,619 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 03:36:55,619 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 03:36:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:55,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:36:55,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 163 proven. 391 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:36:57,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:36:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 163 proven. 391 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:36:58,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:58,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78639154] [2023-12-22 03:36:58,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78639154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:36:58,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:36:58,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-22 03:36:58,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154569233] [2023-12-22 03:36:58,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:36:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-22 03:36:58,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:58,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-22 03:36:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-22 03:36:58,284 INFO L87 Difference]: Start difference. First operand 309568 states and 325062 transitions. Second operand has 13 states, 13 states have (on average 38.38461538461539) internal successors, (499), 12 states have internal predecessors, (499), 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 03:37:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:15,742 INFO L93 Difference]: Finished difference Result 1427026 states and 1498309 transitions. [2023-12-22 03:37:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-22 03:37:15,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.38461538461539) internal successors, (499), 12 states have internal predecessors, (499), 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 450 [2023-12-22 03:37:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:17,782 INFO L225 Difference]: With dead ends: 1427026 [2023-12-22 03:37:17,782 INFO L226 Difference]: Without dead ends: 1116817 [2023-12-22 03:37:18,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=509, Invalid=1213, Unknown=0, NotChecked=0, Total=1722 [2023-12-22 03:37:18,028 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 4475 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 13636 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4475 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 14229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 13636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:18,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4475 Valid, 682 Invalid, 14229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 13636 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-12-22 03:37:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116817 states. [2023-12-22 03:37:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116817 to 623950. [2023-12-22 03:37:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623950 states, 623949 states have (on average 1.0530139482553862) internal successors, (657027), 623949 states have internal predecessors, (657027), 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 03:37:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623950 states to 623950 states and 657027 transitions. [2023-12-22 03:37:32,053 INFO L78 Accepts]: Start accepts. Automaton has 623950 states and 657027 transitions. Word has length 450 [2023-12-22 03:37:32,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:32,054 INFO L495 AbstractCegarLoop]: Abstraction has 623950 states and 657027 transitions. [2023-12-22 03:37:32,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.38461538461539) internal successors, (499), 12 states have internal predecessors, (499), 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 03:37:32,054 INFO L276 IsEmpty]: Start isEmpty. Operand 623950 states and 657027 transitions. [2023-12-22 03:37:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-22 03:37:32,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:32,085 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 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 03:37:32,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-22 03:37:32,286 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 03:37:32,287 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:32,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:32,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1412119791, now seen corresponding path program 1 times [2023-12-22 03:37:32,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748030066] [2023-12-22 03:37:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:32,290 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 03:37:32,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:32,291 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 03:37:32,311 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 03:37:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:32,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 03:37:32,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:37:33,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:33,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:33,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748030066] [2023-12-22 03:37:33,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748030066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:33,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:33,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:37:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106769621] [2023-12-22 03:37:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:33,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 03:37:33,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:33,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 03:37:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 03:37:33,766 INFO L87 Difference]: Start difference. First operand 623950 states and 657027 transitions. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 4 states have internal predecessors, (464), 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 03:37:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:42,050 INFO L93 Difference]: Finished difference Result 1796663 states and 1890188 transitions. [2023-12-22 03:37:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 03:37:42,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 4 states have internal predecessors, (464), 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 469 [2023-12-22 03:37:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:45,390 INFO L225 Difference]: With dead ends: 1796663 [2023-12-22 03:37:45,390 INFO L226 Difference]: Without dead ends: 1173290 [2023-12-22 03:37:46,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-22 03:37:46,345 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 521 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:46,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 219 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-22 03:37:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173290 states. [2023-12-22 03:38:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173290 to 1024752. [2023-12-22 03:38:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024752 states, 1024751 states have (on average 1.0562741583077255) internal successors, (1082418), 1024751 states have internal predecessors, (1082418), 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 03:38:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024752 states to 1024752 states and 1082418 transitions. [2023-12-22 03:38:04,290 INFO L78 Accepts]: Start accepts. Automaton has 1024752 states and 1082418 transitions. Word has length 469 [2023-12-22 03:38:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:04,290 INFO L495 AbstractCegarLoop]: Abstraction has 1024752 states and 1082418 transitions. [2023-12-22 03:38:04,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 4 states have internal predecessors, (464), 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 03:38:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1024752 states and 1082418 transitions. [2023-12-22 03:38:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-22 03:38:04,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:04,347 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:38:04,350 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 03:38:04,547 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 03:38:04,547 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:04,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1388422498, now seen corresponding path program 1 times [2023-12-22 03:38:04,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:04,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202991726] [2023-12-22 03:38:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:04,550 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 03:38:04,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:04,551 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 03:38:04,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 03:38:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:05,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:05,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-22 03:38:05,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:05,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202991726] [2023-12-22 03:38:05,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202991726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:05,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:05,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:38:05,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785545233] [2023-12-22 03:38:05,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:05,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:05,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:05,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:05,194 INFO L87 Difference]: Start difference. First operand 1024752 states and 1082418 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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)