/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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:43:14,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:43:14,707 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 03:43:14,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:43:14,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:43:14,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:43:14,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:43:14,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:43:14,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:43:14,752 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:43:14,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:43:14,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:43:14,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:43:14,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:43:14,754 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:43:14,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:43:14,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:43:14,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:43:14,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:43:14,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:43:14,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:43:14,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:43:14,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:43:14,757 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:43:14,757 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:43:14,757 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:43:14,757 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:43:14,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:43:14,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:43:14,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:43:14,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:43:14,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:43:14,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:43:14,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:43:14,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:43:14,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:43:14,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:43:14,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:43:14,760 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:43:14,760 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:43:14,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:43:14,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:43:14,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:43:14,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:43:14,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:43:14,761 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:43:14,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:43:14,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:43:15,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:43:15,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:43:15,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:43:15,014 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:43:15,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label49.c [2023-12-22 03:43:16,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:43:16,603 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:43:16,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label49.c [2023-12-22 03:43:16,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d49806ce/f3983fc8092242c49d9616fdfc56c601/FLAG3f0647612 [2023-12-22 03:43:16,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d49806ce/f3983fc8092242c49d9616fdfc56c601 [2023-12-22 03:43:16,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:43:16,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:43:16,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:43:16,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:43:16,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:43:16,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:43:16" (1/1) ... [2023-12-22 03:43:16,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eded34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:16, skipping insertion in model container [2023-12-22 03:43:16,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:43:16" (1/1) ... [2023-12-22 03:43:16,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:43:17,171 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_label49.c[56899,56912] [2023-12-22 03:43:17,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:43:17,251 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:43:17,429 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_label49.c[56899,56912] [2023-12-22 03:43:17,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:43:17,457 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:43:17,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17 WrapperNode [2023-12-22 03:43:17,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:43:17,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:43:17,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:43:17,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:43:17,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,596 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-12-22 03:43:17,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:43:17,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:43:17,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:43:17,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:43:17,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,620 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,662 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 03:43:17,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:43:17,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:43:17,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:43:17,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:43:17,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (1/1) ... [2023-12-22 03:43:17,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:43:17,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:43:17,799 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 03:43:17,822 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 03:43:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:43:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:43:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:43:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:43:17,930 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:43:17,932 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:43:19,957 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:43:20,026 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:43:20,026 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:43:20,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:43:20 BoogieIcfgContainer [2023-12-22 03:43:20,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:43:20,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:43:20,029 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:43:20,032 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:43:20,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:43:16" (1/3) ... [2023-12-22 03:43:20,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8bf9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:43:20, skipping insertion in model container [2023-12-22 03:43:20,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:43:17" (2/3) ... [2023-12-22 03:43:20,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8bf9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:43:20, skipping insertion in model container [2023-12-22 03:43:20,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:43:20" (3/3) ... [2023-12-22 03:43:20,035 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label49.c [2023-12-22 03:43:20,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:43:20,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:43:20,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:43:20,119 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;@4b321872, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:43:20,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:43:20,126 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 03:43:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-22 03:43:20,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:43:20,142 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, 1, 1, 1, 1] [2023-12-22 03:43:20,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:43:20,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:43:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1860582760, now seen corresponding path program 1 times [2023-12-22 03:43:20,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:43:20,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809950300] [2023-12-22 03:43:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:43:20,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:43:20,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:43:20,167 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 03:43:20,200 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 03:43:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:43:20,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 03:43:20,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:43:20,431 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 03:43:20,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:43:20,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:43:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809950300] [2023-12-22 03:43:20,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809950300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:43:20,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:43:20,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:43:20,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729447334] [2023-12-22 03:43:20,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:43:20,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 03:43:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:43:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 03:43:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:43:20,465 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 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 03:43:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:43:20,520 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-22 03:43:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 03:43:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-22 03:43:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:43:20,534 INFO L225 Difference]: With dead ends: 479 [2023-12-22 03:43:20,534 INFO L226 Difference]: Without dead ends: 238 [2023-12-22 03:43:20,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 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 03:43:20,540 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 03:43:20,541 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 03:43:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-22 03:43:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-22 03:43:20,586 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 03:43:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-22 03:43:20,589 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 167 [2023-12-22 03:43:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:43:20,590 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-22 03:43:20,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 03:43:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-22 03:43:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-22 03:43:20,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:43:20,592 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, 1, 1, 1, 1] [2023-12-22 03:43:20,595 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 03:43:20,795 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 03:43:20,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:43:20,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:43:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash -123310848, now seen corresponding path program 1 times [2023-12-22 03:43:20,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:43:20,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463932438] [2023-12-22 03:43:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:43:20,799 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 03:43:20,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:43:20,800 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 03:43:20,801 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 03:43:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:43:20,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:43:20,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:43:34,046 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 03:43:34,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:43:34,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:43:34,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463932438] [2023-12-22 03:43:34,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463932438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:43:34,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:43:34,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 03:43:34,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262083636] [2023-12-22 03:43:34,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:43:34,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:43:34,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:43:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:43:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:43:34,054 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 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 03:43:37,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:43:37,222 INFO L93 Difference]: Finished difference Result 588 states and 1007 transitions. [2023-12-22 03:43:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 03:43:37,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-22 03:43:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:43:37,226 INFO L225 Difference]: With dead ends: 588 [2023-12-22 03:43:37,226 INFO L226 Difference]: Without dead ends: 351 [2023-12-22 03:43:37,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:43:37,228 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 418 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:43:37,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 372 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-22 03:43:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-22 03:43:37,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-12-22 03:43:37,246 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 03:43:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 511 transitions. [2023-12-22 03:43:37,248 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 511 transitions. Word has length 167 [2023-12-22 03:43:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:43:37,248 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 511 transitions. [2023-12-22 03:43:37,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 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 03:43:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 511 transitions. [2023-12-22 03:43:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-22 03:43:37,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:43:37,252 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, 1, 1, 1, 1] [2023-12-22 03:43:37,263 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 03:43:37,455 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 03:43:37,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:43:37,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:43:37,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1572956335, now seen corresponding path program 1 times [2023-12-22 03:43:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:43:37,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832560047] [2023-12-22 03:43:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:43:37,460 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 03:43:37,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:43:37,461 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 03:43:37,464 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 03:43:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:43:37,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:43:37,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:43:51,137 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 03:43:51,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:43:51,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:43:51,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832560047] [2023-12-22 03:43:51,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832560047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:43:51,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:43:51,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 03:43:51,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689294171] [2023-12-22 03:43:51,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:43:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:43:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:43:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:43:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:43:51,140 INFO L87 Difference]: Start difference. First operand 351 states and 511 transitions. Second operand has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 0 states have call successors, (0), 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 03:43:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:43:54,722 INFO L93 Difference]: Finished difference Result 729 states and 1181 transitions. [2023-12-22 03:43:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 03:43:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2023-12-22 03:43:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:43:54,725 INFO L225 Difference]: With dead ends: 729 [2023-12-22 03:43:54,725 INFO L226 Difference]: Without dead ends: 492 [2023-12-22 03:43:54,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-12-22 03:43:54,727 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 389 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:43:54,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 365 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-22 03:43:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-22 03:43:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2023-12-22 03:43:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.340122199592668) internal successors, (658), 491 states have internal predecessors, (658), 0 states have call successors, (0), 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 03:43:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 658 transitions. [2023-12-22 03:43:54,746 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 658 transitions. Word has length 174 [2023-12-22 03:43:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:43:54,746 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 658 transitions. [2023-12-22 03:43:54,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 0 states have call successors, (0), 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 03:43:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 658 transitions. [2023-12-22 03:43:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-22 03:43:54,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:43:54,750 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, 1, 1, 1, 1] [2023-12-22 03:43:54,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 03:43:54,953 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 03:43:54,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:43:54,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:43:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1120196174, now seen corresponding path program 1 times [2023-12-22 03:43:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:43:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955546655] [2023-12-22 03:43:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:43:54,957 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 03:43:54,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:43:54,959 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 03:43:54,960 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 03:43:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:43:55,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:43:55,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:43:55,271 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 03:43:55,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:43:55,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:43:55,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955546655] [2023-12-22 03:43:55,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955546655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:43:55,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:43:55,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:43:55,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388710044] [2023-12-22 03:43:55,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:43:55,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:43:55,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:43:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:43:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:43:55,274 INFO L87 Difference]: Start difference. First operand 492 states and 658 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 03:43:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:43:56,203 INFO L93 Difference]: Finished difference Result 947 states and 1409 transitions. [2023-12-22 03:43:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:43:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-22 03:43:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:43:56,206 INFO L225 Difference]: With dead ends: 947 [2023-12-22 03:43:56,206 INFO L226 Difference]: Without dead ends: 710 [2023-12-22 03:43:56,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 03:43:56,208 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 118 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:43:56,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 283 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:43:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-12-22 03:43:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 709. [2023-12-22 03:43:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.347457627118644) internal successors, (954), 708 states have internal predecessors, (954), 0 states have call successors, (0), 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 03:43:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 954 transitions. [2023-12-22 03:43:56,227 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 954 transitions. Word has length 182 [2023-12-22 03:43:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:43:56,227 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 954 transitions. [2023-12-22 03:43:56,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 03:43:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 954 transitions. [2023-12-22 03:43:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-22 03:43:56,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:43:56,232 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, 1, 1, 1, 1] [2023-12-22 03:43:56,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 03:43:56,435 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 03:43:56,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:43:56,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:43:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash 214004442, now seen corresponding path program 1 times [2023-12-22 03:43:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:43:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966499005] [2023-12-22 03:43:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:43:56,438 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 03:43:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:43:56,439 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 03:43:56,440 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 03:43:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:43:56,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:43:56,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:43:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:43:56,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:43:56,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:43:56,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966499005] [2023-12-22 03:43:56,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966499005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:43:56,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:43:56,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:43:56,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985008509] [2023-12-22 03:43:56,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:43:56,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:43:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:43:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:43:56,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:43:56,600 INFO L87 Difference]: Start difference. First operand 709 states and 954 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 03:43:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:43:57,623 INFO L93 Difference]: Finished difference Result 1574 states and 2271 transitions. [2023-12-22 03:43:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:43:57,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 188 [2023-12-22 03:43:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:43:57,628 INFO L225 Difference]: With dead ends: 1574 [2023-12-22 03:43:57,628 INFO L226 Difference]: Without dead ends: 1120 [2023-12-22 03:43:57,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 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 03:43:57,630 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 235 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:43:57,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 324 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:43:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2023-12-22 03:43:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1117. [2023-12-22 03:43:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.2885304659498207) internal successors, (1438), 1116 states have internal predecessors, (1438), 0 states have call successors, (0), 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 03:43:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1438 transitions. [2023-12-22 03:43:57,652 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1438 transitions. Word has length 188 [2023-12-22 03:43:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:43:57,652 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1438 transitions. [2023-12-22 03:43:57,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 03:43:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1438 transitions. [2023-12-22 03:43:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-22 03:43:57,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:43:57,656 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:43:57,663 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 (6)] Ended with exit code 0 [2023-12-22 03:43:57,859 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 03:43:57,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:43:57,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:43:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1664075900, now seen corresponding path program 1 times [2023-12-22 03:43:57,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:43:57,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296808740] [2023-12-22 03:43:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:43:57,862 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 03:43:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:43:57,864 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 03:43:57,868 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 03:43:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:43:58,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:43:58,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:43:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-22 03:43:58,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:43:58,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:43:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296808740] [2023-12-22 03:43:58,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296808740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:43:58,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:43:58,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:43:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487038284] [2023-12-22 03:43:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:43:58,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:43:58,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:43:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:43:58,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:43:58,052 INFO L87 Difference]: Start difference. First operand 1117 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 03:43:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:43:58,666 INFO L93 Difference]: Finished difference Result 1956 states and 2577 transitions. [2023-12-22 03:43:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:43:58,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 208 [2023-12-22 03:43:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:43:58,670 INFO L225 Difference]: With dead ends: 1956 [2023-12-22 03:43:58,670 INFO L226 Difference]: Without dead ends: 1094 [2023-12-22 03:43:58,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 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 03:43:58,672 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 03:43:58,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 29 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 03:43:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-12-22 03:43:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1094. [2023-12-22 03:43:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 1.2314730100640439) internal successors, (1346), 1093 states have internal predecessors, (1346), 0 states have call successors, (0), 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 03:43:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1346 transitions. [2023-12-22 03:43:58,693 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1346 transitions. Word has length 208 [2023-12-22 03:43:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:43:58,694 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1346 transitions. [2023-12-22 03:43:58,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 03:43:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1346 transitions. [2023-12-22 03:43:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-22 03:43:58,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:43:58,698 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:58,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-22 03:43:58,902 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 03:43:58,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:43:58,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:43:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash 764998609, now seen corresponding path program 1 times [2023-12-22 03:43:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:43:58,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616528978] [2023-12-22 03:43:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:43:58,905 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 03:43:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:43:58,906 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 03:43:58,906 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 03:43:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:43:59,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:43:59,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:43:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-22 03:43:59,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:43:59,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:43:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616528978] [2023-12-22 03:43:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616528978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:43:59,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:43:59,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:43:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425992822] [2023-12-22 03:43:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:43:59,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:43:59,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:43:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:43:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:43:59,197 INFO L87 Difference]: Start difference. First operand 1094 states and 1346 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 03:44:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:44:00,329 INFO L93 Difference]: Finished difference Result 2749 states and 3478 transitions. [2023-12-22 03:44:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:44:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 229 [2023-12-22 03:44:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:44:00,338 INFO L225 Difference]: With dead ends: 2749 [2023-12-22 03:44:00,338 INFO L226 Difference]: Without dead ends: 1910 [2023-12-22 03:44:00,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 226 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 03:44:00,340 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 645 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:44:00,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 48 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:44:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2023-12-22 03:44:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1906. [2023-12-22 03:44:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 1.2257217847769029) internal successors, (2335), 1905 states have internal predecessors, (2335), 0 states have call successors, (0), 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 03:44:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2335 transitions. [2023-12-22 03:44:00,375 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2335 transitions. Word has length 229 [2023-12-22 03:44:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:44:00,376 INFO L495 AbstractCegarLoop]: Abstraction has 1906 states and 2335 transitions. [2023-12-22 03:44:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 03:44:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2335 transitions. [2023-12-22 03:44:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-22 03:44:00,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:44:00,382 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 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] [2023-12-22 03:44:00,388 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 (8)] Forceful destruction successful, exit code 0 [2023-12-22 03:44:00,585 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 03:44:00,586 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:44:00,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:44:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2140346822, now seen corresponding path program 1 times [2023-12-22 03:44:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:44:00,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864392725] [2023-12-22 03:44:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:44:00,588 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 03:44:00,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:44:00,589 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 03:44:00,591 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 03:44:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:44:00,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:44:00,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:44:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-22 03:44:00,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:44:00,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:44:00,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864392725] [2023-12-22 03:44:00,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864392725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:44:00,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:44:00,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:44:00,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911481491] [2023-12-22 03:44:00,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:44:00,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:44:00,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:44:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:44:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:44:00,769 INFO L87 Difference]: Start difference. First operand 1906 states and 2335 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 03:44:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:44:01,666 INFO L93 Difference]: Finished difference Result 5188 states and 6448 transitions. [2023-12-22 03:44:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:44:01,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 263 [2023-12-22 03:44:01,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:44:01,677 INFO L225 Difference]: With dead ends: 5188 [2023-12-22 03:44:01,677 INFO L226 Difference]: Without dead ends: 3537 [2023-12-22 03:44:01,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 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 03:44:01,681 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 206 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:44:01,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 279 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:44:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2023-12-22 03:44:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2023-12-22 03:44:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 3532 states have (on average 1.210079275198188) internal successors, (4274), 3532 states have internal predecessors, (4274), 0 states have call successors, (0), 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 03:44:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4274 transitions. [2023-12-22 03:44:01,743 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4274 transitions. Word has length 263 [2023-12-22 03:44:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:44:01,743 INFO L495 AbstractCegarLoop]: Abstraction has 3533 states and 4274 transitions. [2023-12-22 03:44:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 03:44:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4274 transitions. [2023-12-22 03:44:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-22 03:44:01,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:44:01,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:44:01,760 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 03:44:01,954 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 03:44:01,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:44:01,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:44:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash 663080646, now seen corresponding path program 1 times [2023-12-22 03:44:01,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:44:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015746067] [2023-12-22 03:44:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:44:01,958 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 03:44:01,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:44:01,961 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 03:44:02,000 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 03:44:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:44:02,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:44:02,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:44:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 21 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:44:25,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:45:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 2 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:45:02,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:45:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015746067] [2023-12-22 03:45:02,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015746067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:45:02,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:45:02,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-22 03:45:02,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639833021] [2023-12-22 03:45:02,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:45:02,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-22 03:45:02,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:45:02,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-22 03:45:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-12-22 03:45:02,323 INFO L87 Difference]: Start difference. First operand 3533 states and 4274 transitions. Second operand has 19 states, 19 states have (on average 25.842105263157894) internal successors, (491), 18 states have internal predecessors, (491), 0 states have call successors, (0), 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 03:45:09,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:45:09,846 INFO L93 Difference]: Finished difference Result 7139 states and 8795 transitions. [2023-12-22 03:45:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 03:45:09,847 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 25.842105263157894) internal successors, (491), 18 states have internal predecessors, (491), 0 states have call successors, (0), 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 269 [2023-12-22 03:45:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:45:09,859 INFO L225 Difference]: With dead ends: 7139 [2023-12-22 03:45:09,859 INFO L226 Difference]: Without dead ends: 3861 [2023-12-22 03:45:09,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2023-12-22 03:45:09,865 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2376 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5818 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 6022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 5818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:45:09,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 353 Invalid, 6022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 5818 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-22 03:45:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2023-12-22 03:45:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3856. [2023-12-22 03:45:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3855 states have (on average 1.1883268482490272) internal successors, (4581), 3855 states have internal predecessors, (4581), 0 states have call successors, (0), 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 03:45:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 4581 transitions. [2023-12-22 03:45:09,936 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 4581 transitions. Word has length 269 [2023-12-22 03:45:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:45:09,937 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 4581 transitions. [2023-12-22 03:45:09,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.842105263157894) internal successors, (491), 18 states have internal predecessors, (491), 0 states have call successors, (0), 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 03:45:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 4581 transitions. [2023-12-22 03:45:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-22 03:45:09,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:45:09,945 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:45:09,955 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 03:45:10,149 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 03:45:10,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:45:10,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:45:10,156 INFO L85 PathProgramCache]: Analyzing trace with hash 235475809, now seen corresponding path program 1 times [2023-12-22 03:45:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:45:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180010255] [2023-12-22 03:45:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:45:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:45:10,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:45:10,160 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 03:45:10,192 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 03:45:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:45:10,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:45:10,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:45:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-22 03:45:10,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:45:10,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:45:10,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180010255] [2023-12-22 03:45:10,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180010255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:45:10,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:45:10,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:45:10,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842211035] [2023-12-22 03:45:10,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:45:10,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:45:10,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:45:10,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:45:10,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:45:10,551 INFO L87 Difference]: Start difference. First operand 3856 states and 4581 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 03:45:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:45:11,455 INFO L93 Difference]: Finished difference Result 8762 states and 10581 transitions. [2023-12-22 03:45:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:45:11,456 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 269 [2023-12-22 03:45:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:45:11,467 INFO L225 Difference]: With dead ends: 8762 [2023-12-22 03:45:11,467 INFO L226 Difference]: Without dead ends: 5484 [2023-12-22 03:45:11,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 267 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 03:45:11,471 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:45:11,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 238 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:45:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2023-12-22 03:45:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5480. [2023-12-22 03:45:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 5479 states have (on average 1.168096367950356) internal successors, (6400), 5479 states have internal predecessors, (6400), 0 states have call successors, (0), 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 03:45:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 6400 transitions. [2023-12-22 03:45:11,547 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 6400 transitions. Word has length 269 [2023-12-22 03:45:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:45:11,548 INFO L495 AbstractCegarLoop]: Abstraction has 5480 states and 6400 transitions. [2023-12-22 03:45:11,548 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 03:45:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 6400 transitions. [2023-12-22 03:45:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-22 03:45:11,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:45:11,561 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:45:11,568 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 03:45:11,765 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 03:45:11,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:45:11,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:45:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1140966488, now seen corresponding path program 1 times [2023-12-22 03:45:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:45:11,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944090645] [2023-12-22 03:45:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:45:11,768 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 03:45:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:45:11,769 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 03:45:11,775 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 03:45:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:45:11,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:45:11,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:45:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:45:11,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:45:11,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:45:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944090645] [2023-12-22 03:45:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944090645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:45:11,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:45:11,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:45:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171832365] [2023-12-22 03:45:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:45:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:45:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:45:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:45:11,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:45:11,952 INFO L87 Difference]: Start difference. First operand 5480 states and 6400 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 03:45:12,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:45:12,897 INFO L93 Difference]: Finished difference Result 13430 states and 15938 transitions. [2023-12-22 03:45:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:45:12,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 290 [2023-12-22 03:45:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:45:12,918 INFO L225 Difference]: With dead ends: 13430 [2023-12-22 03:45:12,918 INFO L226 Difference]: Without dead ends: 8528 [2023-12-22 03:45:12,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 288 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 03:45:12,924 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 221 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:45:12,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 258 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:45:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8528 states. [2023-12-22 03:45:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8528 to 8525. [2023-12-22 03:45:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8524 states have (on average 1.1582590333176912) internal successors, (9873), 8524 states have internal predecessors, (9873), 0 states have call successors, (0), 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 03:45:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 9873 transitions. [2023-12-22 03:45:13,048 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 9873 transitions. Word has length 290 [2023-12-22 03:45:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:45:13,049 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 9873 transitions. [2023-12-22 03:45:13,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 03:45:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 9873 transitions. [2023-12-22 03:45:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-22 03:45:13,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:45:13,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2023-12-22 03:45:13,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 03:45:13,265 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 03:45:13,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:45:13,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:45:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash 203378044, now seen corresponding path program 1 times [2023-12-22 03:45:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:45:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529562107] [2023-12-22 03:45:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:45:13,268 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 03:45:13,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:45:13,269 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 03:45:13,271 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 03:45:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:45:13,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:45:13,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:45:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-22 03:45:13,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:45:13,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:45:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529562107] [2023-12-22 03:45:13,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529562107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:45:13,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:45:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:45:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929340390] [2023-12-22 03:45:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:45:13,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:45:13,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:45:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:45:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:45:13,544 INFO L87 Difference]: Start difference. First operand 8525 states and 9873 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 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 03:45:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:45:14,381 INFO L93 Difference]: Finished difference Result 16475 states and 19155 transitions. [2023-12-22 03:45:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:45:14,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 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 303 [2023-12-22 03:45:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:45:14,398 INFO L225 Difference]: With dead ends: 16475 [2023-12-22 03:45:14,398 INFO L226 Difference]: Without dead ends: 8528 [2023-12-22 03:45:14,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 301 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 03:45:14,407 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 115 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:45:14,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 173 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:45:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8528 states. [2023-12-22 03:45:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8528 to 8525. [2023-12-22 03:45:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8524 states have (on average 1.126349131862975) internal successors, (9601), 8524 states have internal predecessors, (9601), 0 states have call successors, (0), 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 03:45:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 9601 transitions. [2023-12-22 03:45:14,512 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 9601 transitions. Word has length 303 [2023-12-22 03:45:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:45:14,512 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 9601 transitions. [2023-12-22 03:45:14,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 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 03:45:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 9601 transitions. [2023-12-22 03:45:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-22 03:45:14,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:45:14,524 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:45:14,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 03:45:14,727 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 03:45:14,728 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:45:14,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:45:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash 175126991, now seen corresponding path program 1 times [2023-12-22 03:45:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:45:14,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736489840] [2023-12-22 03:45:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:45:14,730 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 03:45:14,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:45:14,731 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 03:45:14,732 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 03:45:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:45:14,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:45:14,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:45:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-22 03:45:15,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:45:15,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:45:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736489840] [2023-12-22 03:45:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736489840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:45:15,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:45:15,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:45:15,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019801630] [2023-12-22 03:45:15,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:45:15,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:45:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:45:15,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:45:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:45:15,105 INFO L87 Difference]: Start difference. First operand 8525 states and 9601 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 03:45:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:45:16,106 INFO L93 Difference]: Finished difference Result 24823 states and 27918 transitions. [2023-12-22 03:45:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:45:16,107 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 307 [2023-12-22 03:45:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:45:16,139 INFO L225 Difference]: With dead ends: 24823 [2023-12-22 03:45:16,139 INFO L226 Difference]: Without dead ends: 16876 [2023-12-22 03:45:16,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 304 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 03:45:16,151 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 545 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:45:16,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 533 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:45:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16876 states. [2023-12-22 03:45:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16876 to 16871. [2023-12-22 03:45:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16871 states, 16870 states have (on average 1.1188500296384114) internal successors, (18875), 16870 states have internal predecessors, (18875), 0 states have call successors, (0), 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 03:45:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 18875 transitions. [2023-12-22 03:45:16,359 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 18875 transitions. Word has length 307 [2023-12-22 03:45:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:45:16,359 INFO L495 AbstractCegarLoop]: Abstraction has 16871 states and 18875 transitions. [2023-12-22 03:45:16,359 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 03:45:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 18875 transitions. [2023-12-22 03:45:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-12-22 03:45:16,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:45:16,375 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2023-12-22 03:45:16,383 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 03:45:16,579 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 03:45:16,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:45:16,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:45:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2007948346, now seen corresponding path program 1 times [2023-12-22 03:45:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:45:16,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085219371] [2023-12-22 03:45:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:45:16,582 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 03:45:16,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:45:16,584 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 03:45:16,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 03:45:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:45:16,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:45:16,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:45:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-22 03:45:17,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:45:17,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:45:17,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085219371] [2023-12-22 03:45:17,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085219371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:45:17,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:45:17,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:45:17,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778681496] [2023-12-22 03:45:17,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:45:17,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:45:17,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:45:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:45:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:45:17,109 INFO L87 Difference]: Start difference. First operand 16871 states and 18875 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 03:45:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:45:18,589 INFO L93 Difference]: Finished difference Result 36633 states and 41248 transitions. [2023-12-22 03:45:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:45:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 320 [2023-12-22 03:45:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:45:18,623 INFO L225 Difference]: With dead ends: 36633 [2023-12-22 03:45:18,623 INFO L226 Difference]: Without dead ends: 20340 [2023-12-22 03:45:18,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 317 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 03:45:18,641 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 320 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:45:18,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 198 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 03:45:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20340 states. [2023-12-22 03:45:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20340 to 20322. [2023-12-22 03:45:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20322 states, 20321 states have (on average 1.0909404064760593) internal successors, (22169), 20321 states have internal predecessors, (22169), 0 states have call successors, (0), 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 03:45:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20322 states to 20322 states and 22169 transitions. [2023-12-22 03:45:18,879 INFO L78 Accepts]: Start accepts. Automaton has 20322 states and 22169 transitions. Word has length 320 [2023-12-22 03:45:18,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:45:18,880 INFO L495 AbstractCegarLoop]: Abstraction has 20322 states and 22169 transitions. [2023-12-22 03:45:18,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 03:45:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 20322 states and 22169 transitions. [2023-12-22 03:45:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-22 03:45:18,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:45:18,894 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:45:18,900 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 03:45:19,097 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 03:45:19,097 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:45:19,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:45:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash 67825773, now seen corresponding path program 1 times [2023-12-22 03:45:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:45:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546368928] [2023-12-22 03:45:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:45:19,100 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 03:45:19,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:45:19,102 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 03:45:19,132 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 03:45:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:45:19,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:45:19,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:45:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 135 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:45:38,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:46:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 47 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:46:07,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:46:07,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546368928] [2023-12-22 03:46:07,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546368928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:46:07,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:46:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-22 03:46:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394212565] [2023-12-22 03:46:07,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:46:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-22 03:46:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:46:07,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-22 03:46:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-12-22 03:46:07,714 INFO L87 Difference]: Start difference. First operand 20322 states and 22169 transitions. Second operand has 23 states, 23 states have (on average 25.82608695652174) internal successors, (594), 22 states have internal predecessors, (594), 0 states have call successors, (0), 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 03:46:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:46:21,200 INFO L93 Difference]: Finished difference Result 98593 states and 108360 transitions. [2023-12-22 03:46:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-22 03:46:21,201 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 25.82608695652174) internal successors, (594), 22 states have internal predecessors, (594), 0 states have call successors, (0), 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 324 [2023-12-22 03:46:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:46:21,320 INFO L225 Difference]: With dead ends: 98593 [2023-12-22 03:46:21,321 INFO L226 Difference]: Without dead ends: 78849 [2023-12-22 03:46:21,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2023-12-22 03:46:21,355 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 3581 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 9823 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 11321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 9823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-22 03:46:21,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 292 Invalid, 11321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1498 Valid, 9823 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-12-22 03:46:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78849 states. [2023-12-22 03:46:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78849 to 53377. [2023-12-22 03:46:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53377 states, 53376 states have (on average 1.0925884292565948) internal successors, (58318), 53376 states have internal predecessors, (58318), 0 states have call successors, (0), 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 03:46:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53377 states to 53377 states and 58318 transitions. [2023-12-22 03:46:22,117 INFO L78 Accepts]: Start accepts. Automaton has 53377 states and 58318 transitions. Word has length 324 [2023-12-22 03:46:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:46:22,118 INFO L495 AbstractCegarLoop]: Abstraction has 53377 states and 58318 transitions. [2023-12-22 03:46:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.82608695652174) internal successors, (594), 22 states have internal predecessors, (594), 0 states have call successors, (0), 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 03:46:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 53377 states and 58318 transitions. [2023-12-22 03:46:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-22 03:46:22,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:46:22,149 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:46:22,155 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 03:46:22,355 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 03:46:22,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:46:22,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:46:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash -520259109, now seen corresponding path program 1 times [2023-12-22 03:46:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:46:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916851524] [2023-12-22 03:46:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:46:22,358 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 03:46:22,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:46:22,359 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 03:46:22,360 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 03:46:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:46:22,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:46:22,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:46:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:46:23,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:46:23,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:46:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916851524] [2023-12-22 03:46:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916851524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:46:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:46:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:46:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951406480] [2023-12-22 03:46:23,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:46:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:46:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:46:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:46:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:46:23,295 INFO L87 Difference]: Start difference. First operand 53377 states and 58318 transitions. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 03:46:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:46:24,907 INFO L93 Difference]: Finished difference Result 109456 states and 119716 transitions. [2023-12-22 03:46:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:46:24,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 377 [2023-12-22 03:46:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:46:24,978 INFO L225 Difference]: With dead ends: 109456 [2023-12-22 03:46:24,978 INFO L226 Difference]: Without dead ends: 56657 [2023-12-22 03:46:25,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 374 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 03:46:25,006 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 254 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:46:25,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 189 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:46:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56657 states. [2023-12-22 03:46:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56657 to 53794. [2023-12-22 03:46:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53794 states, 53793 states have (on average 1.0933206922833827) internal successors, (58813), 53793 states have internal predecessors, (58813), 0 states have call successors, (0), 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 03:46:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53794 states to 53794 states and 58813 transitions. [2023-12-22 03:46:25,974 INFO L78 Accepts]: Start accepts. Automaton has 53794 states and 58813 transitions. Word has length 377 [2023-12-22 03:46:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:46:25,974 INFO L495 AbstractCegarLoop]: Abstraction has 53794 states and 58813 transitions. [2023-12-22 03:46:25,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 03:46:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 53794 states and 58813 transitions. [2023-12-22 03:46:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-22 03:46:25,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:46:25,999 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:46:26,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 03:46:26,201 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 03:46:26,201 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:46:26,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:46:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash 198964924, now seen corresponding path program 1 times [2023-12-22 03:46:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:46:26,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118078640] [2023-12-22 03:46:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:46:26,204 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 03:46:26,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:46:26,205 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 03:46:26,206 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 03:46:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:46:26,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 03:46:26,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:46:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 306 proven. 124 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:46:29,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:46:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 306 proven. 124 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:46:32,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:46:32,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118078640] [2023-12-22 03:46:32,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118078640] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:46:32,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:46:32,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-22 03:46:32,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525984078] [2023-12-22 03:46:32,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:46:32,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 03:46:32,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:46:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 03:46:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 03:46:32,026 INFO L87 Difference]: Start difference. First operand 53794 states and 58813 transitions. Second operand has 8 states, 8 states have (on average 72.75) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 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 03:46:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:46:34,721 INFO L93 Difference]: Finished difference Result 107668 states and 117713 transitions. [2023-12-22 03:46:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 03:46:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 72.75) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 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 415 [2023-12-22 03:46:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:46:34,778 INFO L225 Difference]: With dead ends: 107668 [2023-12-22 03:46:34,779 INFO L226 Difference]: Without dead ends: 54452 [2023-12-22 03:46:34,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:46:34,816 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 411 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2881 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:46:34,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 292 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2881 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-22 03:46:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54452 states. [2023-12-22 03:46:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54452 to 53998. [2023-12-22 03:46:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53998 states, 53997 states have (on average 1.09317184288016) internal successors, (59028), 53997 states have internal predecessors, (59028), 0 states have call successors, (0), 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 03:46:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53998 states to 53998 states and 59028 transitions. [2023-12-22 03:46:35,485 INFO L78 Accepts]: Start accepts. Automaton has 53998 states and 59028 transitions. Word has length 415 [2023-12-22 03:46:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:46:35,485 INFO L495 AbstractCegarLoop]: Abstraction has 53998 states and 59028 transitions. [2023-12-22 03:46:35,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.75) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 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 03:46:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 53998 states and 59028 transitions. [2023-12-22 03:46:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-12-22 03:46:35,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:46:35,516 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:46:35,536 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 03:46:35,718 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 03:46:35,719 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:46:35,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:46:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1823209201, now seen corresponding path program 1 times [2023-12-22 03:46:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:46:35,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248054335] [2023-12-22 03:46:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:46:35,722 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 03:46:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:46:35,723 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 03:46:35,724 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 03:46:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:46:35,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:46:35,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:46:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-22 03:46:35,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:46:35,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:46:35,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248054335] [2023-12-22 03:46:35,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248054335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:46:35,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:46:35,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:46:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151754171] [2023-12-22 03:46:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:46:35,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:46:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:46:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:46:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:46:35,954 INFO L87 Difference]: Start difference. First operand 53998 states and 59028 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 03:46:37,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:46:37,375 INFO L93 Difference]: Finished difference Result 117205 states and 128346 transitions. [2023-12-22 03:46:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:46:37,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 421 [2023-12-22 03:46:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:46:37,453 INFO L225 Difference]: With dead ends: 117205 [2023-12-22 03:46:37,453 INFO L226 Difference]: Without dead ends: 63989 [2023-12-22 03:46:37,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 419 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 03:46:37,493 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 198 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:46:37,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 321 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:46:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63989 states. [2023-12-22 03:46:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63989 to 62524. [2023-12-22 03:46:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62524 states, 62523 states have (on average 1.0920781152535868) internal successors, (68280), 62523 states have internal predecessors, (68280), 0 states have call successors, (0), 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 03:46:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62524 states to 62524 states and 68280 transitions. [2023-12-22 03:46:38,352 INFO L78 Accepts]: Start accepts. Automaton has 62524 states and 68280 transitions. Word has length 421 [2023-12-22 03:46:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:46:38,352 INFO L495 AbstractCegarLoop]: Abstraction has 62524 states and 68280 transitions. [2023-12-22 03:46:38,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 03:46:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 62524 states and 68280 transitions. [2023-12-22 03:46:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-22 03:46:38,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:46:38,380 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:46:38,383 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 03:46:38,580 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 03:46:38,581 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:46:38,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:46:38,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1752787053, now seen corresponding path program 1 times [2023-12-22 03:46:38,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:46:38,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758690613] [2023-12-22 03:46:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:46:38,780 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 03:46:38,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:46:38,782 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 03:46:38,811 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 03:46:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:46:38,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:46:38,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:46:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 311 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-22 03:46:41,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:46:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 311 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-22 03:46:45,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:46:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758690613] [2023-12-22 03:46:45,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758690613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:46:45,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:46:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 03:46:45,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438607576] [2023-12-22 03:46:45,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:46:45,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 03:46:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:46:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 03:46:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:46:45,099 INFO L87 Difference]: Start difference. First operand 62524 states and 68280 transitions. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 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 03:46:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:46:48,776 INFO L93 Difference]: Finished difference Result 240211 states and 262019 transitions. [2023-12-22 03:46:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 03:46:48,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 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 424 [2023-12-22 03:46:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:46:48,980 INFO L225 Difference]: With dead ends: 240211 [2023-12-22 03:46:48,980 INFO L226 Difference]: Without dead ends: 178469 [2023-12-22 03:46:49,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 03:46:49,022 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1320 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:46:49,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 396 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-22 03:46:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178469 states. [2023-12-22 03:46:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178469 to 172963. [2023-12-22 03:46:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172963 states, 172962 states have (on average 1.0906268428903458) internal successors, (188637), 172962 states have internal predecessors, (188637), 0 states have call successors, (0), 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 03:46:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172963 states to 172963 states and 188637 transitions. [2023-12-22 03:46:51,762 INFO L78 Accepts]: Start accepts. Automaton has 172963 states and 188637 transitions. Word has length 424 [2023-12-22 03:46:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:46:51,762 INFO L495 AbstractCegarLoop]: Abstraction has 172963 states and 188637 transitions. [2023-12-22 03:46:51,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 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 03:46:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 172963 states and 188637 transitions. [2023-12-22 03:46:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-22 03:46:51,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:46:51,799 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 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, 2, 2, 2, 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] [2023-12-22 03:46:51,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-22 03:46:52,003 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 03:46:52,003 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:46:52,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:46:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1775910167, now seen corresponding path program 1 times [2023-12-22 03:46:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:46:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695511756] [2023-12-22 03:46:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:46:52,007 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 03:46:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:46:52,008 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 03:46:52,015 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 03:46:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:46:52,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:46:52,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:46:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-22 03:46:52,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:46:52,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:46:52,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695511756] [2023-12-22 03:46:52,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695511756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:46:52,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:46:52,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:46:52,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834102167] [2023-12-22 03:46:52,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:46:52,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:46:52,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:46:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:46:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:46:52,619 INFO L87 Difference]: Start difference. First operand 172963 states and 188637 transitions. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:46:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:46:55,148 INFO L93 Difference]: Finished difference Result 351481 states and 383664 transitions. [2023-12-22 03:46:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:46:55,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 428 [2023-12-22 03:46:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:46:55,428 INFO L225 Difference]: With dead ends: 351481 [2023-12-22 03:46:55,429 INFO L226 Difference]: Without dead ends: 179300 [2023-12-22 03:46:55,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 425 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 03:46:55,500 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 373 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:46:55,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 183 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:46:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179300 states. [2023-12-22 03:46:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179300 to 171104. [2023-12-22 03:46:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171104 states, 171103 states have (on average 1.084229966745177) internal successors, (185515), 171103 states have internal predecessors, (185515), 0 states have call successors, (0), 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 03:46:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171104 states to 171104 states and 185515 transitions. [2023-12-22 03:46:58,169 INFO L78 Accepts]: Start accepts. Automaton has 171104 states and 185515 transitions. Word has length 428 [2023-12-22 03:46:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:46:58,170 INFO L495 AbstractCegarLoop]: Abstraction has 171104 states and 185515 transitions. [2023-12-22 03:46:58,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:46:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 171104 states and 185515 transitions. [2023-12-22 03:46:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-22 03:46:58,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:46:58,206 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:46:58,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 03:46:58,407 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 03:46:58,407 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:46:58,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:46:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1008082356, now seen corresponding path program 1 times [2023-12-22 03:46:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:46:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024669467] [2023-12-22 03:46:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:46:58,410 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 03:46:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:46:58,411 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 03:46:58,412 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 03:46:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:46:58,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:46:58,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:46:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-22 03:46:59,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:46:59,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:46:59,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024669467] [2023-12-22 03:46:59,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024669467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:46:59,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:46:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:46:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323721409] [2023-12-22 03:46:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:46:59,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:46:59,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:46:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:46:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:46:59,056 INFO L87 Difference]: Start difference. First operand 171104 states and 185515 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 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 03:47:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:47:02,057 INFO L93 Difference]: Finished difference Result 490084 states and 531008 transitions. [2023-12-22 03:47:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:47:02,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 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 436 [2023-12-22 03:47:02,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:47:02,505 INFO L225 Difference]: With dead ends: 490084 [2023-12-22 03:47:02,505 INFO L226 Difference]: Without dead ends: 319762 [2023-12-22 03:47:02,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 434 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 03:47:02,595 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 235 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:47:02,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 51 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:47:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319762 states. [2023-12-22 03:47:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319762 to 319354. [2023-12-22 03:47:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319354 states, 319353 states have (on average 1.0821504729875717) internal successors, (345588), 319353 states have internal predecessors, (345588), 0 states have call successors, (0), 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 03:47:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319354 states to 319354 states and 345588 transitions. [2023-12-22 03:47:07,753 INFO L78 Accepts]: Start accepts. Automaton has 319354 states and 345588 transitions. Word has length 436 [2023-12-22 03:47:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:47:07,753 INFO L495 AbstractCegarLoop]: Abstraction has 319354 states and 345588 transitions. [2023-12-22 03:47:07,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 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 03:47:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 319354 states and 345588 transitions. [2023-12-22 03:47:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-22 03:47:07,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:47:07,791 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:47:07,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 03:47:07,991 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 03:47:07,992 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:47:07,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:47:07,993 INFO L85 PathProgramCache]: Analyzing trace with hash -711250695, now seen corresponding path program 1 times [2023-12-22 03:47:07,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:47:07,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862600429] [2023-12-22 03:47:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:47:07,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:47:07,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:47:07,997 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 03:47:07,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-22 03:47:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:47:08,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:47:08,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:47:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 500 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:47:26,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:48:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 300 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:48:14,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:48:14,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862600429] [2023-12-22 03:48:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862600429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:48:14,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:48:14,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-22 03:48:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505872746] [2023-12-22 03:48:14,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:48:14,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-22 03:48:14,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:48:14,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-22 03:48:14,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2023-12-22 03:48:14,785 INFO L87 Difference]: Start difference. First operand 319354 states and 345588 transitions. Second operand has 28 states, 28 states have (on average 29.642857142857142) internal successors, (830), 27 states have internal predecessors, (830), 0 states have call successors, (0), 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 03:48:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:48:51,373 INFO L93 Difference]: Finished difference Result 1899099 states and 2074587 transitions. [2023-12-22 03:48:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-22 03:48:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 29.642857142857142) internal successors, (830), 27 states have internal predecessors, (830), 0 states have call successors, (0), 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 442 [2023-12-22 03:48:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted.