/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_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:38:00,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:38:01,069 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 03:38:01,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:38:01,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:38:01,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:38:01,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:38:01,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:38:01,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:38:01,101 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:38:01,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:38:01,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:38:01,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:38:01,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:38:01,104 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:38:01,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:38:01,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:38:01,104 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:38:01,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:38:01,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:38:01,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:38:01,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:38:01,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:38:01,107 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:38:01,107 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:38:01,107 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:38:01,107 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:38:01,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:38:01,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:38:01,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:38:01,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:38:01,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:38:01,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:38:01,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:38:01,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:38:01,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:38:01,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:38:01,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:38:01,109 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:38:01,109 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:38:01,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:38:01,110 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:38:01,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:38:01,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:38:01,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:38:01,110 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:38:01,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:38:01,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:38:01,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:38:01,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:38:01,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:38:01,331 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:38:01,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2023-12-22 03:38:02,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:38:02,648 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:38:02,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2023-12-22 03:38:02,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c26d73da/5bfd9f8f0c0941e9a25da9e0dc0942e3/FLAGda3404e6c [2023-12-22 03:38:02,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c26d73da/5bfd9f8f0c0941e9a25da9e0dc0942e3 [2023-12-22 03:38:02,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:38:02,706 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:38:02,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:38:02,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:38:02,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:38:02,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:38:02" (1/1) ... [2023-12-22 03:38:02,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757c3ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:02, skipping insertion in model container [2023-12-22 03:38:02,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:38:02" (1/1) ... [2023-12-22 03:38:02,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:38:03,081 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_label23.c[57306,57319] [2023-12-22 03:38:03,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:38:03,127 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:38:03,291 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_label23.c[57306,57319] [2023-12-22 03:38:03,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:38:03,317 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:38:03,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03 WrapperNode [2023-12-22 03:38:03,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:38:03,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:38:03,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:38:03,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:38:03,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,443 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-12-22 03:38:03,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:38:03,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:38:03,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:38:03,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:38:03,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,510 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 03:38:03,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:38:03,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:38:03,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:38:03,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:38:03,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (1/1) ... [2023-12-22 03:38:03,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:38:03,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:38:03,628 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 03:38:03,630 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 03:38:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:38:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:38:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:38:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:38:03,736 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:38:03,738 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:38:05,348 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:38:05,385 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:38:05,385 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:38:05,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:38:05 BoogieIcfgContainer [2023-12-22 03:38:05,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:38:05,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:38:05,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:38:05,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:38:05,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:38:02" (1/3) ... [2023-12-22 03:38:05,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150f54f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:38:05, skipping insertion in model container [2023-12-22 03:38:05,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:38:03" (2/3) ... [2023-12-22 03:38:05,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150f54f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:38:05, skipping insertion in model container [2023-12-22 03:38:05,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:38:05" (3/3) ... [2023-12-22 03:38:05,391 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label23.c [2023-12-22 03:38:05,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:38:05,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:38:05,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:38:05,440 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;@7972ec0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:38:05,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:38:05,444 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 03:38:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-22 03:38:05,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:05,454 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, 1, 1, 1] [2023-12-22 03:38:05,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:05,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1480751209, now seen corresponding path program 1 times [2023-12-22 03:38:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745238541] [2023-12-22 03:38:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:05,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:05,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:05,486 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 03:38:05,514 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 03:38:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:05,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 03:38:05,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:05,699 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 03:38:05,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:05,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:05,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745238541] [2023-12-22 03:38:05,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745238541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:05,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:05,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:38:05,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249161495] [2023-12-22 03:38:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:05,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 03:38:05,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:05,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 03:38:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:38:05,727 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 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:05,758 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-22 03:38:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 03:38:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-12-22 03:38:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:05,768 INFO L225 Difference]: With dead ends: 479 [2023-12-22 03:38:05,768 INFO L226 Difference]: Without dead ends: 238 [2023-12-22 03:38:05,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 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 03:38:05,772 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 03:38:05,773 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 03:38:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-22 03:38:05,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-22 03:38:05,807 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 03:38:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-22 03:38:05,813 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 170 [2023-12-22 03:38:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:05,814 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-22 03:38:05,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-22 03:38:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-22 03:38:05,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:05,817 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, 1, 1, 1] [2023-12-22 03:38:05,822 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 03:38:06,021 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 03:38:06,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:06,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash -599867642, now seen corresponding path program 1 times [2023-12-22 03:38:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:06,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730185837] [2023-12-22 03:38:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:06,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:06,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:06,034 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 03:38:06,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 03:38:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:06,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:38:06,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:23,972 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 03:38:23,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:23,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730185837] [2023-12-22 03:38:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730185837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:23,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:23,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 03:38:23,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727210285] [2023-12-22 03:38:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:23,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:38:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:38:23,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:38:23,976 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 9 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:30,611 INFO L93 Difference]: Finished difference Result 1007 states and 1709 transitions. [2023-12-22 03:38:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 03:38:30,611 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 9 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-12-22 03:38:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:30,614 INFO L225 Difference]: With dead ends: 1007 [2023-12-22 03:38:30,615 INFO L226 Difference]: Without dead ends: 770 [2023-12-22 03:38:30,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-22 03:38:30,616 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1413 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:30,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 370 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-22 03:38:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-12-22 03:38:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 766. [2023-12-22 03:38:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.3856209150326797) internal successors, (1060), 765 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1060 transitions. [2023-12-22 03:38:30,638 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1060 transitions. Word has length 170 [2023-12-22 03:38:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:30,638 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1060 transitions. [2023-12-22 03:38:30,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 9 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1060 transitions. [2023-12-22 03:38:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-22 03:38:30,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:30,644 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:30,652 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 03:38:30,844 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 03:38:30,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:30,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2094041351, now seen corresponding path program 1 times [2023-12-22 03:38:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427733397] [2023-12-22 03:38:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:30,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:30,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:30,869 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 03:38:30,880 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 03:38:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:31,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:31,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:38:31,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:31,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427733397] [2023-12-22 03:38:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427733397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:31,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:31,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:38:31,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371242662] [2023-12-22 03:38:31,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:31,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:31,036 INFO L87 Difference]: Start difference. First operand 766 states and 1060 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:31,922 INFO L93 Difference]: Finished difference Result 1635 states and 2350 transitions. [2023-12-22 03:38:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2023-12-22 03:38:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:31,925 INFO L225 Difference]: With dead ends: 1635 [2023-12-22 03:38:31,925 INFO L226 Difference]: Without dead ends: 1186 [2023-12-22 03:38:31,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:31,929 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:31,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 87 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:38:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2023-12-22 03:38:31,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1172. [2023-12-22 03:38:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 1.3287788215200682) internal successors, (1556), 1171 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1556 transitions. [2023-12-22 03:38:31,980 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1556 transitions. Word has length 178 [2023-12-22 03:38:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:31,981 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1556 transitions. [2023-12-22 03:38:31,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1556 transitions. [2023-12-22 03:38:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-22 03:38:31,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:31,986 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, 1, 1, 1] [2023-12-22 03:38:31,990 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 03:38:32,188 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 03:38:32,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:32,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:32,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2024830742, now seen corresponding path program 1 times [2023-12-22 03:38:32,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:32,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094630689] [2023-12-22 03:38:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:32,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:32,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:32,192 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 03:38:32,208 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 03:38:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:32,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:32,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:32,482 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 03:38:32,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:32,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:32,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094630689] [2023-12-22 03:38:32,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094630689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:32,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:32,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697639738] [2023-12-22 03:38:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:32,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:32,484 INFO L87 Difference]: Start difference. First operand 1172 states and 1556 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:33,339 INFO L93 Difference]: Finished difference Result 2445 states and 3554 transitions. [2023-12-22 03:38:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:33,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 185 [2023-12-22 03:38:33,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:33,345 INFO L225 Difference]: With dead ends: 2445 [2023-12-22 03:38:33,345 INFO L226 Difference]: Without dead ends: 1794 [2023-12-22 03:38:33,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 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 03:38:33,347 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 107 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:33,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 338 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2023-12-22 03:38:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1792. [2023-12-22 03:38:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1791 states have (on average 1.3556672250139588) internal successors, (2428), 1791 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2428 transitions. [2023-12-22 03:38:33,370 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2428 transitions. Word has length 185 [2023-12-22 03:38:33,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:33,371 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2428 transitions. [2023-12-22 03:38:33,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:33,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2428 transitions. [2023-12-22 03:38:33,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-22 03:38:33,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:33,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1] [2023-12-22 03:38:33,392 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 03:38:33,576 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 03:38:33,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:33,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1028609732, now seen corresponding path program 1 times [2023-12-22 03:38:33,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:33,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284467343] [2023-12-22 03:38:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:33,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:33,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:33,594 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 03:38:33,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 03:38:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:33,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:33,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:38:33,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:33,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:33,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284467343] [2023-12-22 03:38:33,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284467343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:33,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:33,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:33,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712368510] [2023-12-22 03:38:33,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:33,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:33,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:33,770 INFO L87 Difference]: Start difference. First operand 1792 states and 2428 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:34,800 INFO L93 Difference]: Finished difference Result 4258 states and 6111 transitions. [2023-12-22 03:38:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:34,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-12-22 03:38:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:34,808 INFO L225 Difference]: With dead ends: 4258 [2023-12-22 03:38:34,808 INFO L226 Difference]: Without dead ends: 2987 [2023-12-22 03:38:34,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 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 03:38:34,810 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 480 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:34,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 47 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:38:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2023-12-22 03:38:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2983. [2023-12-22 03:38:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2982 states have (on average 1.323608316566063) internal successors, (3947), 2982 states have internal predecessors, (3947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 3947 transitions. [2023-12-22 03:38:34,867 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 3947 transitions. Word has length 195 [2023-12-22 03:38:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:34,867 INFO L495 AbstractCegarLoop]: Abstraction has 2983 states and 3947 transitions. [2023-12-22 03:38:34,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 3947 transitions. [2023-12-22 03:38:34,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-22 03:38:34,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:34,871 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2023-12-22 03:38:34,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:35,073 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 03:38:35,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:35,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 143203681, now seen corresponding path program 1 times [2023-12-22 03:38:35,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:35,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209454404] [2023-12-22 03:38:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:35,078 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 03:38:35,080 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 03:38:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:35,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:35,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:38:35,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:35,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209454404] [2023-12-22 03:38:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209454404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251574337] [2023-12-22 03:38:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:35,269 INFO L87 Difference]: Start difference. First operand 2983 states and 3947 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:36,106 INFO L93 Difference]: Finished difference Result 6464 states and 8728 transitions. [2023-12-22 03:38:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:36,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-12-22 03:38:36,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:36,115 INFO L225 Difference]: With dead ends: 6464 [2023-12-22 03:38:36,115 INFO L226 Difference]: Without dead ends: 4002 [2023-12-22 03:38:36,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:36,119 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 201 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:36,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 315 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:36,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2023-12-22 03:38:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 4002. [2023-12-22 03:38:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4002 states, 4001 states have (on average 1.2959260184953763) internal successors, (5185), 4001 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 5185 transitions. [2023-12-22 03:38:36,172 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 5185 transitions. Word has length 197 [2023-12-22 03:38:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:36,173 INFO L495 AbstractCegarLoop]: Abstraction has 4002 states and 5185 transitions. [2023-12-22 03:38:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 5185 transitions. [2023-12-22 03:38:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-22 03:38:36,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:36,178 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:36,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:36,392 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 03:38:36,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:36,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:36,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1174766421, now seen corresponding path program 1 times [2023-12-22 03:38:36,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509193262] [2023-12-22 03:38:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:36,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:36,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:36,396 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 03:38:36,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 03:38:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:36,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:36,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 03:38:36,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:36,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:36,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509193262] [2023-12-22 03:38:36,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509193262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:36,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:36,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:38:36,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287163095] [2023-12-22 03:38:36,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:36,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:36,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:36,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:36,578 INFO L87 Difference]: Start difference. First operand 4002 states and 5185 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:37,460 INFO L93 Difference]: Finished difference Result 9920 states and 13167 transitions. [2023-12-22 03:38:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 210 [2023-12-22 03:38:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:37,474 INFO L225 Difference]: With dead ends: 9920 [2023-12-22 03:38:37,474 INFO L226 Difference]: Without dead ends: 6439 [2023-12-22 03:38:37,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 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 03:38:37,479 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:37,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 162 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6439 states. [2023-12-22 03:38:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6439 to 6438. [2023-12-22 03:38:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 6437 states have (on average 1.2078608047226969) internal successors, (7775), 6437 states have internal predecessors, (7775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 7775 transitions. [2023-12-22 03:38:37,565 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 7775 transitions. Word has length 210 [2023-12-22 03:38:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:37,565 INFO L495 AbstractCegarLoop]: Abstraction has 6438 states and 7775 transitions. [2023-12-22 03:38:37,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 7775 transitions. [2023-12-22 03:38:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-22 03:38:37,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:37,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:37,590 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 03:38:37,791 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 03:38:37,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:37,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash -578605754, now seen corresponding path program 1 times [2023-12-22 03:38:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:37,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400069056] [2023-12-22 03:38:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:37,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:37,794 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 03:38:37,796 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 03:38:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:37,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:37,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:38:37,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:37,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:37,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400069056] [2023-12-22 03:38:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400069056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:37,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497538567] [2023-12-22 03:38:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:37,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:37,953 INFO L87 Difference]: Start difference. First operand 6438 states and 7775 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:38,947 INFO L93 Difference]: Finished difference Result 15402 states and 19088 transitions. [2023-12-22 03:38:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:38,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 218 [2023-12-22 03:38:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:38,969 INFO L225 Difference]: With dead ends: 15402 [2023-12-22 03:38:38,969 INFO L226 Difference]: Without dead ends: 9485 [2023-12-22 03:38:38,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 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 03:38:38,975 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:38,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 353 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:38:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9485 states. [2023-12-22 03:38:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9485 to 9483. [2023-12-22 03:38:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9483 states, 9482 states have (on average 1.1631512339168952) internal successors, (11029), 9482 states have internal predecessors, (11029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9483 states to 9483 states and 11029 transitions. [2023-12-22 03:38:39,118 INFO L78 Accepts]: Start accepts. Automaton has 9483 states and 11029 transitions. Word has length 218 [2023-12-22 03:38:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:39,118 INFO L495 AbstractCegarLoop]: Abstraction has 9483 states and 11029 transitions. [2023-12-22 03:38:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 9483 states and 11029 transitions. [2023-12-22 03:38:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-22 03:38:39,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:39,126 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:39,147 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 03:38:39,329 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 03:38:39,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:39,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:39,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1220331064, now seen corresponding path program 1 times [2023-12-22 03:38:39,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:39,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565570518] [2023-12-22 03:38:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:39,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:39,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:39,332 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 03:38:39,359 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 03:38:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:39,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:39,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:38:39,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:39,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565570518] [2023-12-22 03:38:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565570518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:39,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498529163] [2023-12-22 03:38:39,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:39,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:39,611 INFO L87 Difference]: Start difference. First operand 9483 states and 11029 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:40,490 INFO L93 Difference]: Finished difference Result 20479 states and 23840 transitions. [2023-12-22 03:38:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:40,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 239 [2023-12-22 03:38:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:40,511 INFO L225 Difference]: With dead ends: 20479 [2023-12-22 03:38:40,511 INFO L226 Difference]: Without dead ends: 10693 [2023-12-22 03:38:40,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 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 03:38:40,520 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 166 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:40,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 356 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10693 states. [2023-12-22 03:38:40,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10693 to 9471. [2023-12-22 03:38:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9471 states, 9470 states have (on average 1.1059134107708553) internal successors, (10473), 9470 states have internal predecessors, (10473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9471 states to 9471 states and 10473 transitions. [2023-12-22 03:38:40,626 INFO L78 Accepts]: Start accepts. Automaton has 9471 states and 10473 transitions. Word has length 239 [2023-12-22 03:38:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:40,626 INFO L495 AbstractCegarLoop]: Abstraction has 9471 states and 10473 transitions. [2023-12-22 03:38:40,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9471 states and 10473 transitions. [2023-12-22 03:38:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-22 03:38:40,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:40,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:40,647 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 03:38:40,838 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 03:38:40,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:40,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2130675885, now seen corresponding path program 1 times [2023-12-22 03:38:40,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:40,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273547038] [2023-12-22 03:38:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:40,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:40,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:40,847 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 03:38:40,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 03:38:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:40,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:40,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:38:41,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:41,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:41,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273547038] [2023-12-22 03:38:41,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273547038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:41,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:41,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222404414] [2023-12-22 03:38:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:41,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:41,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:41,186 INFO L87 Difference]: Start difference. First operand 9471 states and 10473 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:42,446 INFO L93 Difference]: Finished difference Result 18645 states and 20653 transitions. [2023-12-22 03:38:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:42,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2023-12-22 03:38:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:42,458 INFO L225 Difference]: With dead ends: 18645 [2023-12-22 03:38:42,458 INFO L226 Difference]: Without dead ends: 9277 [2023-12-22 03:38:42,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 252 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 03:38:42,465 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 354 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:42,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 184 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 03:38:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2023-12-22 03:38:42,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 9065. [2023-12-22 03:38:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9064 states have (on average 1.1071270962047661) internal successors, (10035), 9064 states have internal predecessors, (10035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 10035 transitions. [2023-12-22 03:38:42,548 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 10035 transitions. Word has length 255 [2023-12-22 03:38:42,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:42,548 INFO L495 AbstractCegarLoop]: Abstraction has 9065 states and 10035 transitions. [2023-12-22 03:38:42,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 10035 transitions. [2023-12-22 03:38:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-22 03:38:42,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:42,555 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:42,557 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 03:38:42,758 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 03:38:42,758 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:42,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1950341065, now seen corresponding path program 1 times [2023-12-22 03:38:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226453783] [2023-12-22 03:38:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:42,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:42,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:42,762 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 03:38:42,767 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 03:38:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:42,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:42,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-22 03:38:43,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:43,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226453783] [2023-12-22 03:38:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226453783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:43,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:38:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791037811] [2023-12-22 03:38:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:43,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:43,164 INFO L87 Difference]: Start difference. First operand 9065 states and 10035 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:43,965 INFO L93 Difference]: Finished difference Result 19045 states and 21157 transitions. [2023-12-22 03:38:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2023-12-22 03:38:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:43,980 INFO L225 Difference]: With dead ends: 19045 [2023-12-22 03:38:43,980 INFO L226 Difference]: Without dead ends: 10286 [2023-12-22 03:38:43,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 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 03:38:43,989 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:43,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 205 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:38:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2023-12-22 03:38:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 10283. [2023-12-22 03:38:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10283 states, 10282 states have (on average 1.1038708422485897) internal successors, (11350), 10282 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 11350 transitions. [2023-12-22 03:38:44,131 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 11350 transitions. Word has length 276 [2023-12-22 03:38:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:44,131 INFO L495 AbstractCegarLoop]: Abstraction has 10283 states and 11350 transitions. [2023-12-22 03:38:44,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 11350 transitions. [2023-12-22 03:38:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-22 03:38:44,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:44,139 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:44,142 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 03:38:44,342 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 03:38:44,343 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:44,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1244852222, now seen corresponding path program 1 times [2023-12-22 03:38:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:44,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852016012] [2023-12-22 03:38:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:44,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:44,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:44,346 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 03:38:44,372 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 03:38:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:44,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:44,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:38:44,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:44,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:44,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852016012] [2023-12-22 03:38:44,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852016012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:44,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:44,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:44,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042208492] [2023-12-22 03:38:44,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:44,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:44,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:44,498 INFO L87 Difference]: Start difference. First operand 10283 states and 11350 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:45,332 INFO L93 Difference]: Finished difference Result 25540 states and 28267 transitions. [2023-12-22 03:38:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:45,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 281 [2023-12-22 03:38:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:45,349 INFO L225 Difference]: With dead ends: 25540 [2023-12-22 03:38:45,350 INFO L226 Difference]: Without dead ends: 15360 [2023-12-22 03:38:45,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 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 03:38:45,360 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 226 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:45,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 309 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:38:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15360 states. [2023-12-22 03:38:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15360 to 14953. [2023-12-22 03:38:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14953 states, 14952 states have (on average 1.0817950775815945) internal successors, (16175), 14952 states have internal predecessors, (16175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14953 states to 14953 states and 16175 transitions. [2023-12-22 03:38:45,495 INFO L78 Accepts]: Start accepts. Automaton has 14953 states and 16175 transitions. Word has length 281 [2023-12-22 03:38:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:45,496 INFO L495 AbstractCegarLoop]: Abstraction has 14953 states and 16175 transitions. [2023-12-22 03:38:45,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 14953 states and 16175 transitions. [2023-12-22 03:38:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-22 03:38:45,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:45,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:38:45,522 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 03:38:45,710 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 03:38:45,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:45,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash 927100533, now seen corresponding path program 1 times [2023-12-22 03:38:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:45,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416044616] [2023-12-22 03:38:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:45,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:45,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:45,714 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 03:38:45,744 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 03:38:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:45,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:45,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 03:38:46,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:46,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416044616] [2023-12-22 03:38:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416044616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:46,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647631830] [2023-12-22 03:38:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:46,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:46,290 INFO L87 Difference]: Start difference. First operand 14953 states and 16175 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:47,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:47,537 INFO L93 Difference]: Finished difference Result 36319 states and 39412 transitions. [2023-12-22 03:38:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2023-12-22 03:38:47,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:47,562 INFO L225 Difference]: With dead ends: 36319 [2023-12-22 03:38:47,562 INFO L226 Difference]: Without dead ends: 21672 [2023-12-22 03:38:47,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 326 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 03:38:47,576 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 397 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:47,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 148 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:38:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21672 states. [2023-12-22 03:38:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21672 to 20648. [2023-12-22 03:38:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20648 states, 20647 states have (on average 1.0733762774252917) internal successors, (22162), 20647 states have internal predecessors, (22162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20648 states to 20648 states and 22162 transitions. [2023-12-22 03:38:47,765 INFO L78 Accepts]: Start accepts. Automaton has 20648 states and 22162 transitions. Word has length 329 [2023-12-22 03:38:47,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:47,765 INFO L495 AbstractCegarLoop]: Abstraction has 20648 states and 22162 transitions. [2023-12-22 03:38:47,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 20648 states and 22162 transitions. [2023-12-22 03:38:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-22 03:38:47,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:47,779 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:47,784 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 03:38:47,982 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 03:38:47,982 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:47,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1218913569, now seen corresponding path program 1 times [2023-12-22 03:38:47,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:47,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599420585] [2023-12-22 03:38:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:47,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:47,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:47,986 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 03:38:47,990 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 03:38:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:48,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:48,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-22 03:38:48,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:48,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599420585] [2023-12-22 03:38:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599420585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:48,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539358097] [2023-12-22 03:38:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:48,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:48,175 INFO L87 Difference]: Start difference. First operand 20648 states and 22162 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:48,903 INFO L93 Difference]: Finished difference Result 35302 states and 37852 transitions. [2023-12-22 03:38:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:48,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 340 [2023-12-22 03:38:48,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:48,935 INFO L225 Difference]: With dead ends: 35302 [2023-12-22 03:38:48,935 INFO L226 Difference]: Without dead ends: 14960 [2023-12-22 03:38:48,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 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 03:38:48,968 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 205 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:48,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 312 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 03:38:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14960 states. [2023-12-22 03:38:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14960 to 14753. [2023-12-22 03:38:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14753 states, 14752 states have (on average 1.0642624728850325) internal successors, (15700), 14752 states have internal predecessors, (15700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14753 states to 14753 states and 15700 transitions. [2023-12-22 03:38:49,204 INFO L78 Accepts]: Start accepts. Automaton has 14753 states and 15700 transitions. Word has length 340 [2023-12-22 03:38:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:49,205 INFO L495 AbstractCegarLoop]: Abstraction has 14753 states and 15700 transitions. [2023-12-22 03:38:49,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 14753 states and 15700 transitions. [2023-12-22 03:38:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-22 03:38:49,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:49,217 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:49,220 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 03:38:49,420 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 03:38:49,420 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:49,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1187161548, now seen corresponding path program 1 times [2023-12-22 03:38:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:49,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878702356] [2023-12-22 03:38:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:49,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:49,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:49,424 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 03:38:49,425 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 03:38:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:49,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-22 03:38:49,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:38:50,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:38:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 188 proven. 23 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:38:52,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:52,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878702356] [2023-12-22 03:38:52,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878702356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:38:52,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:38:52,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 03:38:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210185816] [2023-12-22 03:38:52,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:38:52,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 03:38:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 03:38:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:38:52,701 INFO L87 Difference]: Start difference. First operand 14753 states and 15700 transitions. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:55,756 INFO L93 Difference]: Finished difference Result 41117 states and 43703 transitions. [2023-12-22 03:38:55,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 03:38:55,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2023-12-22 03:38:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:55,785 INFO L225 Difference]: With dead ends: 41117 [2023-12-22 03:38:55,785 INFO L226 Difference]: Without dead ends: 26670 [2023-12-22 03:38:55,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-22 03:38:55,800 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1080 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:55,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 194 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-22 03:38:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26670 states. [2023-12-22 03:38:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26670 to 19026. [2023-12-22 03:38:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19026 states, 19025 states have (on average 1.0659658344283838) internal successors, (20280), 19025 states have internal predecessors, (20280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19026 states to 19026 states and 20280 transitions. [2023-12-22 03:38:56,110 INFO L78 Accepts]: Start accepts. Automaton has 19026 states and 20280 transitions. Word has length 359 [2023-12-22 03:38:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:56,110 INFO L495 AbstractCegarLoop]: Abstraction has 19026 states and 20280 transitions. [2023-12-22 03:38:56,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 19026 states and 20280 transitions. [2023-12-22 03:38:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-22 03:38:56,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:56,121 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:56,125 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 (16)] Ended with exit code 0 [2023-12-22 03:38:56,324 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 03:38:56,324 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:56,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1892563624, now seen corresponding path program 1 times [2023-12-22 03:38:56,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:56,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448422501] [2023-12-22 03:38:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:56,328 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 03:38:56,329 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 03:38:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:56,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:56,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-22 03:38:56,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:56,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:56,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448422501] [2023-12-22 03:38:56,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448422501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:56,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:56,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:56,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917650023] [2023-12-22 03:38:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:56,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:56,740 INFO L87 Difference]: Start difference. First operand 19026 states and 20280 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:57,828 INFO L93 Difference]: Finished difference Result 50556 states and 53883 transitions. [2023-12-22 03:38:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:57,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2023-12-22 03:38:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:57,865 INFO L225 Difference]: With dead ends: 50556 [2023-12-22 03:38:57,865 INFO L226 Difference]: Without dead ends: 31633 [2023-12-22 03:38:57,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 357 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 03:38:57,884 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 342 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:57,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 392 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:38:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31633 states. [2023-12-22 03:38:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31633 to 28786. [2023-12-22 03:38:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28786 states, 28785 states have (on average 1.0679173180475943) internal successors, (30740), 28785 states have internal predecessors, (30740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28786 states to 28786 states and 30740 transitions. [2023-12-22 03:38:58,261 INFO L78 Accepts]: Start accepts. Automaton has 28786 states and 30740 transitions. Word has length 360 [2023-12-22 03:38:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:58,261 INFO L495 AbstractCegarLoop]: Abstraction has 28786 states and 30740 transitions. [2023-12-22 03:38:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 28786 states and 30740 transitions. [2023-12-22 03:38:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-22 03:38:58,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:58,271 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:38:58,274 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 03:38:58,474 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 03:38:58,475 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:58,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:58,475 INFO L85 PathProgramCache]: Analyzing trace with hash -231600335, now seen corresponding path program 1 times [2023-12-22 03:38:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:58,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664167760] [2023-12-22 03:38:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:58,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:58,493 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 03:38:58,532 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 03:38:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:58,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 03:38:58,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 261 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-22 03:39:01,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:39:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 261 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-22 03:39:04,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664167760] [2023-12-22 03:39:04,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664167760] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:39:04,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:39:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 03:39:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059066296] [2023-12-22 03:39:04,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:39:04,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 03:39:04,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 03:39:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:39:04,293 INFO L87 Difference]: Start difference. First operand 28786 states and 30740 transitions. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:05,846 INFO L93 Difference]: Finished difference Result 57808 states and 61728 transitions. [2023-12-22 03:39:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 03:39:05,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 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 365 [2023-12-22 03:39:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:05,879 INFO L225 Difference]: With dead ends: 57808 [2023-12-22 03:39:05,879 INFO L226 Difference]: Without dead ends: 29328 [2023-12-22 03:39:05,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:39:05,897 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 569 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:05,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 160 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:39:05,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29328 states. [2023-12-22 03:39:06,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29328 to 29193. [2023-12-22 03:39:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29193 states, 29192 states have (on average 1.067244450534393) internal successors, (31155), 29192 states have internal predecessors, (31155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29193 states to 29193 states and 31155 transitions. [2023-12-22 03:39:06,324 INFO L78 Accepts]: Start accepts. Automaton has 29193 states and 31155 transitions. Word has length 365 [2023-12-22 03:39:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:06,324 INFO L495 AbstractCegarLoop]: Abstraction has 29193 states and 31155 transitions. [2023-12-22 03:39:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 29193 states and 31155 transitions. [2023-12-22 03:39:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-22 03:39:06,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:06,333 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:39:06,340 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 03:39:06,536 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 03:39:06,537 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:06,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash 332138560, now seen corresponding path program 1 times [2023-12-22 03:39:06,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:06,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969457425] [2023-12-22 03:39:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:06,539 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 03:39:06,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:06,540 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 03:39:06,541 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 03:39:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:06,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:39:06,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 214 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:39:08,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:39:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 214 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:39:09,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:09,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969457425] [2023-12-22 03:39:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969457425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:39:09,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:39:09,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-22 03:39:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312364883] [2023-12-22 03:39:09,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:39:09,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:39:09,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:39:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:39:09,411 INFO L87 Difference]: Start difference. First operand 29193 states and 31155 transitions. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:12,201 INFO L93 Difference]: Finished difference Result 97239 states and 104142 transitions. [2023-12-22 03:39:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 03:39:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 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 365 [2023-12-22 03:39:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:12,273 INFO L225 Difference]: With dead ends: 97239 [2023-12-22 03:39:12,273 INFO L226 Difference]: Without dead ends: 68759 [2023-12-22 03:39:12,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:39:12,294 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1852 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:12,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 301 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-22 03:39:12,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68759 states. [2023-12-22 03:39:12,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68759 to 65826. [2023-12-22 03:39:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65826 states, 65825 states have (on average 1.0668135206988227) internal successors, (70223), 65825 states have internal predecessors, (70223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65826 states to 65826 states and 70223 transitions. [2023-12-22 03:39:13,324 INFO L78 Accepts]: Start accepts. Automaton has 65826 states and 70223 transitions. Word has length 365 [2023-12-22 03:39:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:13,325 INFO L495 AbstractCegarLoop]: Abstraction has 65826 states and 70223 transitions. [2023-12-22 03:39:13,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 65826 states and 70223 transitions. [2023-12-22 03:39:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-22 03:39:13,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:13,342 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:39:13,345 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 03:39:13,545 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 03:39:13,545 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:13,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2137498333, now seen corresponding path program 1 times [2023-12-22 03:39:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:13,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077492420] [2023-12-22 03:39:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:13,548 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 03:39:13,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:13,550 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 03:39:13,551 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 03:39:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:13,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 03:39:13,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 226 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-22 03:39:15,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:39:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 59 proven. 235 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-22 03:39:17,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077492420] [2023-12-22 03:39:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077492420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:39:17,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:39:17,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-22 03:39:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229172638] [2023-12-22 03:39:17,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:39:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:39:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:39:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:39:17,187 INFO L87 Difference]: Start difference. First operand 65826 states and 70223 transitions. Second operand has 10 states, 10 states have (on average 52.9) internal successors, (529), 9 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:20,372 INFO L93 Difference]: Finished difference Result 175214 states and 186980 transitions. [2023-12-22 03:39:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-22 03:39:20,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 52.9) internal successors, (529), 9 states have internal predecessors, (529), 0 states have call successors, (0), 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 382 [2023-12-22 03:39:20,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:20,503 INFO L225 Difference]: With dead ends: 175214 [2023-12-22 03:39:20,503 INFO L226 Difference]: Without dead ends: 110101 [2023-12-22 03:39:20,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2023-12-22 03:39:20,533 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1728 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:20,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 210 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-22 03:39:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110101 states. [2023-12-22 03:39:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110101 to 97391. [2023-12-22 03:39:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97391 states, 97390 states have (on average 1.0680254646267584) internal successors, (104015), 97390 states have internal predecessors, (104015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97391 states to 97391 states and 104015 transitions. [2023-12-22 03:39:22,160 INFO L78 Accepts]: Start accepts. Automaton has 97391 states and 104015 transitions. Word has length 382 [2023-12-22 03:39:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:22,161 INFO L495 AbstractCegarLoop]: Abstraction has 97391 states and 104015 transitions. [2023-12-22 03:39:22,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 52.9) internal successors, (529), 9 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 97391 states and 104015 transitions. [2023-12-22 03:39:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-22 03:39:22,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:22,395 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:39:22,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 03:39:22,596 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 03:39:22,596 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:22,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash -897762224, now seen corresponding path program 1 times [2023-12-22 03:39:22,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:22,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149922867] [2023-12-22 03:39:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:22,600 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 03:39:22,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:22,601 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 03:39:22,602 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 03:39:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:22,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:39:22,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-22 03:39:23,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:39:23,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:23,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149922867] [2023-12-22 03:39:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149922867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:39:23,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:39:23,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:39:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838674414] [2023-12-22 03:39:23,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:39:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:39:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:39:23,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:23,042 INFO L87 Difference]: Start difference. First operand 97391 states and 104015 transitions. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:24,321 INFO L93 Difference]: Finished difference Result 195488 states and 208742 transitions. [2023-12-22 03:39:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:39:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2023-12-22 03:39:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:24,598 INFO L225 Difference]: With dead ends: 195488 [2023-12-22 03:39:24,598 INFO L226 Difference]: Without dead ends: 98810 [2023-12-22 03:39:24,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 389 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 03:39:24,678 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 420 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:24,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 51 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:39:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98810 states. [2023-12-22 03:39:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98810 to 96983. [2023-12-22 03:39:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96983 states, 96982 states have (on average 1.0658163370522364) internal successors, (103365), 96982 states have internal predecessors, (103365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96983 states to 96983 states and 103365 transitions. [2023-12-22 03:39:26,177 INFO L78 Accepts]: Start accepts. Automaton has 96983 states and 103365 transitions. Word has length 392 [2023-12-22 03:39:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:26,178 INFO L495 AbstractCegarLoop]: Abstraction has 96983 states and 103365 transitions. [2023-12-22 03:39:26,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 96983 states and 103365 transitions. [2023-12-22 03:39:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-22 03:39:26,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:26,209 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:26,216 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 03:39:26,411 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 03:39:26,412 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:26,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1912391291, now seen corresponding path program 1 times [2023-12-22 03:39:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:26,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230269485] [2023-12-22 03:39:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:26,421 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 03:39:26,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:26,424 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 03:39:26,424 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 03:39:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:26,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:39:26,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:39:26,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:39:26,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230269485] [2023-12-22 03:39:26,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230269485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:39:26,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:39:26,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:39:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098722745] [2023-12-22 03:39:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:39:26,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:39:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:39:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:26,945 INFO L87 Difference]: Start difference. First operand 96983 states and 103365 transitions. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:28,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:28,662 INFO L93 Difference]: Finished difference Result 170074 states and 180983 transitions. [2023-12-22 03:39:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:39:28,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 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 399 [2023-12-22 03:39:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:28,786 INFO L225 Difference]: With dead ends: 170074 [2023-12-22 03:39:28,786 INFO L226 Difference]: Without dead ends: 103541 [2023-12-22 03:39:28,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 396 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 03:39:28,833 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 310 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:28,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 341 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 03:39:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103541 states. [2023-12-22 03:39:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103541 to 96983. [2023-12-22 03:39:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96983 states, 96982 states have (on average 1.0656513579839557) internal successors, (103349), 96982 states have internal predecessors, (103349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96983 states to 96983 states and 103349 transitions. [2023-12-22 03:39:30,252 INFO L78 Accepts]: Start accepts. Automaton has 96983 states and 103349 transitions. Word has length 399 [2023-12-22 03:39:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:30,255 INFO L495 AbstractCegarLoop]: Abstraction has 96983 states and 103349 transitions. [2023-12-22 03:39:30,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 96983 states and 103349 transitions. [2023-12-22 03:39:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-22 03:39:30,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:30,287 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:30,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-22 03:39:30,489 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 03:39:30,490 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:30,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1412341625, now seen corresponding path program 1 times [2023-12-22 03:39:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846552597] [2023-12-22 03:39:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:30,493 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 03:39:30,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:30,494 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 03:39:30,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-22 03:39:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:30,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:39:30,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 316 proven. 72 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-22 03:39:32,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:39:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 316 proven. 72 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-22 03:39:33,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846552597] [2023-12-22 03:39:33,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846552597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:39:33,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:39:33,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-22 03:39:33,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780731964] [2023-12-22 03:39:33,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:39:33,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 03:39:33,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 03:39:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-22 03:39:33,298 INFO L87 Difference]: Start difference. First operand 96983 states and 103349 transitions. Second operand has 11 states, 11 states have (on average 41.0) internal successors, (451), 10 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:38,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:38,799 INFO L93 Difference]: Finished difference Result 297125 states and 316554 transitions. [2023-12-22 03:39:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-22 03:39:38,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 41.0) internal successors, (451), 10 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2023-12-22 03:39:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:39,115 INFO L225 Difference]: With dead ends: 297125 [2023-12-22 03:39:39,116 INFO L226 Difference]: Without dead ends: 200855 [2023-12-22 03:39:39,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2023-12-22 03:39:39,186 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 3706 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3706 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 4233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:39,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3706 Valid, 732 Invalid, 4233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-22 03:39:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200855 states. [2023-12-22 03:39:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200855 to 143405. [2023-12-22 03:39:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143405 states, 143404 states have (on average 1.0641056037488494) internal successors, (152597), 143404 states have internal predecessors, (152597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143405 states to 143405 states and 152597 transitions. [2023-12-22 03:39:41,634 INFO L78 Accepts]: Start accepts. Automaton has 143405 states and 152597 transitions. Word has length 413 [2023-12-22 03:39:41,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:41,636 INFO L495 AbstractCegarLoop]: Abstraction has 143405 states and 152597 transitions. [2023-12-22 03:39:41,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 41.0) internal successors, (451), 10 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 143405 states and 152597 transitions. [2023-12-22 03:39:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-22 03:39:41,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:41,667 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:39:41,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-22 03:39:41,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:41,870 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:41,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:41,871 INFO L85 PathProgramCache]: Analyzing trace with hash -498082609, now seen corresponding path program 1 times [2023-12-22 03:39:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641401066] [2023-12-22 03:39:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:41,875 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:39:41,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-22 03:39:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:42,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:39:42,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-22 03:39:42,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:39:42,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641401066] [2023-12-22 03:39:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641401066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:39:42,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:39:42,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:39:42,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620801992] [2023-12-22 03:39:42,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:39:42,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:39:42,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:39:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:42,521 INFO L87 Difference]: Start difference. First operand 143405 states and 152597 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:44,522 INFO L93 Difference]: Finished difference Result 353833 states and 376894 transitions. [2023-12-22 03:39:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:39:44,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 422 [2023-12-22 03:39:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:45,068 INFO L225 Difference]: With dead ends: 353833 [2023-12-22 03:39:45,068 INFO L226 Difference]: Without dead ends: 256567 [2023-12-22 03:39:45,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 419 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 03:39:45,116 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 373 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:45,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 287 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:39:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256567 states. [2023-12-22 03:39:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256567 to 251474. [2023-12-22 03:39:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251474 states, 251473 states have (on average 1.0665518763445778) internal successors, (268209), 251473 states have internal predecessors, (268209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251474 states to 251474 states and 268209 transitions. [2023-12-22 03:39:49,184 INFO L78 Accepts]: Start accepts. Automaton has 251474 states and 268209 transitions. Word has length 422 [2023-12-22 03:39:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:49,184 INFO L495 AbstractCegarLoop]: Abstraction has 251474 states and 268209 transitions. [2023-12-22 03:39:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 251474 states and 268209 transitions. [2023-12-22 03:39:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-22 03:39:49,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:49,222 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:49,225 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 (24)] Ended with exit code 0 [2023-12-22 03:39:49,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:49,425 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:49,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:49,426 INFO L85 PathProgramCache]: Analyzing trace with hash 738315375, now seen corresponding path program 1 times [2023-12-22 03:39:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:49,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328497387] [2023-12-22 03:39:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:49,428 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 03:39:49,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:49,429 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:39:49,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 03:39:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:49,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:39:49,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-22 03:39:49,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:39:49,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328497387] [2023-12-22 03:39:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328497387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:39:49,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:39:49,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:39:49,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9776244] [2023-12-22 03:39:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:39:49,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:39:49,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:39:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:49,949 INFO L87 Difference]: Start difference. First operand 251474 states and 268209 transitions. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:52,769 INFO L93 Difference]: Finished difference Result 489350 states and 521785 transitions. [2023-12-22 03:39:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:39:52,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 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 423 [2023-12-22 03:39:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:53,134 INFO L225 Difference]: With dead ends: 489350 [2023-12-22 03:39:53,134 INFO L226 Difference]: Without dead ends: 282792 [2023-12-22 03:39:53,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 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 03:39:53,234 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 544 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:53,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 331 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:39:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282792 states. [2023-12-22 03:39:57,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282792 to 277273. [2023-12-22 03:39:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277273 states, 277272 states have (on average 1.0670713234657665) internal successors, (295869), 277272 states have internal predecessors, (295869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277273 states to 277273 states and 295869 transitions. [2023-12-22 03:39:57,981 INFO L78 Accepts]: Start accepts. Automaton has 277273 states and 295869 transitions. Word has length 423 [2023-12-22 03:39:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:57,981 INFO L495 AbstractCegarLoop]: Abstraction has 277273 states and 295869 transitions. [2023-12-22 03:39:57,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 277273 states and 295869 transitions. [2023-12-22 03:39:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-22 03:39:58,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:58,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:39:58,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 03:39:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:58,225 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:58,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1191534255, now seen corresponding path program 1 times [2023-12-22 03:39:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652853674] [2023-12-22 03:39:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:58,228 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 03:39:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:58,229 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:39:58,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 03:39:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:58,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:39:58,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:40:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 52 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:40:18,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:40:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 131 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:40:47,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:40:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652853674] [2023-12-22 03:40:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652853674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:40:47,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:40:47,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-22 03:40:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353469275] [2023-12-22 03:40:47,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:40:47,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-22 03:40:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:40:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-22 03:40:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-12-22 03:40:47,040 INFO L87 Difference]: Start difference. First operand 277273 states and 295869 transitions. Second operand has 21 states, 21 states have (on average 30.714285714285715) internal successors, (645), 20 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:40:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:40:59,581 INFO L93 Difference]: Finished difference Result 860289 states and 918181 transitions. [2023-12-22 03:40:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 03:40:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 30.714285714285715) internal successors, (645), 20 states have internal predecessors, (645), 0 states have call successors, (0), 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 423 [2023-12-22 03:40:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:41:01,160 INFO L225 Difference]: With dead ends: 860289 [2023-12-22 03:41:01,160 INFO L226 Difference]: Without dead ends: 583729 [2023-12-22 03:41:01,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=295, Invalid=761, Unknown=0, NotChecked=0, Total=1056 [2023-12-22 03:41:01,725 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 2838 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 8084 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2838 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 8219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 8084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:41:01,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2838 Valid, 386 Invalid, 8219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 8084 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-22 03:41:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583729 states. [2023-12-22 03:41:09,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583729 to 579039. [2023-12-22 03:41:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579039 states, 579038 states have (on average 1.065814333428894) internal successors, (617147), 579038 states have internal predecessors, (617147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:41:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579039 states to 579039 states and 617147 transitions. [2023-12-22 03:41:11,361 INFO L78 Accepts]: Start accepts. Automaton has 579039 states and 617147 transitions. Word has length 423 [2023-12-22 03:41:11,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:41:11,361 INFO L495 AbstractCegarLoop]: Abstraction has 579039 states and 617147 transitions. [2023-12-22 03:41:11,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 30.714285714285715) internal successors, (645), 20 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:41:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 579039 states and 617147 transitions. [2023-12-22 03:41:11,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-22 03:41:11,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:41:11,398 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:41:11,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 03:41:11,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:41:11,601 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:41:11,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:41:11,602 INFO L85 PathProgramCache]: Analyzing trace with hash 251777805, now seen corresponding path program 1 times [2023-12-22 03:41:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:41:11,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288285282] [2023-12-22 03:41:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:41:11,604 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 03:41:11,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:41:11,606 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:41:11,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-22 03:41:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:41:11,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:41:11,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:41:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-22 03:41:11,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:41:11,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:41:11,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288285282] [2023-12-22 03:41:11,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288285282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:41:11,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:41:11,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:41:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268488542] [2023-12-22 03:41:11,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:41:11,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:41:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:41:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:41:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:41:11,972 INFO L87 Difference]: Start difference. First operand 579039 states and 617147 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)