/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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:34:04,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:34:04,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 03:34:04,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:34:04,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:34:04,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:34:04,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:34:04,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:34:04,766 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:34:04,766 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:34:04,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:34:04,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:34:04,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:34:04,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:34:04,767 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:34:04,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:34:04,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:34:04,768 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:34:04,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:34:04,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:34:04,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:34:04,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:34:04,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:34:04,773 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:34:04,775 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:34:04,775 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:34:04,775 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:34:04,776 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:34:04,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:34:04,776 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:34:04,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:34:04,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:34:04,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:34:04,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:34:04,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:04,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:34:04,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:34:04,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:34:04,778 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:34:04,778 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:34:04,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:34:04,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:34:04,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:34:04,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:34:04,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:34:04,779 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:34:04,779 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:34:04,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:34:05,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:34:05,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:34:05,004 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:34:05,004 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:34:05,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2023-12-22 03:34:06,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:34:06,332 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:34:06,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2023-12-22 03:34:06,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45583b3da/dd75c271a0674b7690507c00701260a6/FLAG194afcf97 [2023-12-22 03:34:06,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45583b3da/dd75c271a0674b7690507c00701260a6 [2023-12-22 03:34:06,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:34:06,364 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:34:06,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:06,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:34:06,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:34:06,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:06" (1/1) ... [2023-12-22 03:34:06,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151286a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:06, skipping insertion in model container [2023-12-22 03:34:06,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:06" (1/1) ... [2023-12-22 03:34:06,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:34:06,821 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_label00.c[60148,60161] [2023-12-22 03:34:06,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:06,867 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:34:07,007 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_label00.c[60148,60161] [2023-12-22 03:34:07,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:07,036 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:34:07,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07 WrapperNode [2023-12-22 03:34:07,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:07,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:07,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:34:07,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:34:07,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,135 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-12-22 03:34:07,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:07,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:34:07,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:34:07,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:34:07,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,153 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,185 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 03:34:07,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:34:07,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:34:07,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:34:07,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:34:07,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (1/1) ... [2023-12-22 03:34:07,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:07,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:34:07,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 03:34:07,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 03:34:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:34:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:34:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:34:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:34:07,375 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:34:07,377 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:34:08,991 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:34:09,034 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:34:09,034 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:34:09,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:09 BoogieIcfgContainer [2023-12-22 03:34:09,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:34:09,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:34:09,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:34:09,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:34:09,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:34:06" (1/3) ... [2023-12-22 03:34:09,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a78f24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:09, skipping insertion in model container [2023-12-22 03:34:09,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:07" (2/3) ... [2023-12-22 03:34:09,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a78f24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:09, skipping insertion in model container [2023-12-22 03:34:09,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:09" (3/3) ... [2023-12-22 03:34:09,040 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label00.c [2023-12-22 03:34:09,073 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:34:09,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:34:09,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:34:09,132 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;@740016b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:34:09,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:34:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-22 03:34:09,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:09,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:09,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:09,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1260517054, now seen corresponding path program 1 times [2023-12-22 03:34:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:09,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047023020] [2023-12-22 03:34:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:09,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:09,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 03:34:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:09,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 03:34:09,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:09,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:09,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:09,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047023020] [2023-12-22 03:34:09,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047023020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:09,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:09,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:34:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009567467] [2023-12-22 03:34:09,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:09,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 03:34:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 03:34:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:34:09,436 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 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:09,483 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-22 03:34:09,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 03:34:09,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-22 03:34:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:09,498 INFO L225 Difference]: With dead ends: 479 [2023-12-22 03:34:09,498 INFO L226 Difference]: Without dead ends: 238 [2023-12-22 03:34:09,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:34:09,504 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:09,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:34:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-22 03:34:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-22 03:34:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-22 03:34:09,553 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 191 [2023-12-22 03:34:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:09,555 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-22 03:34:09,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-22 03:34:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-22 03:34:09,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:09,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:09,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 03:34:09,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:09,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:09,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1290405023, now seen corresponding path program 1 times [2023-12-22 03:34:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141540034] [2023-12-22 03:34:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:09,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:09,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:09,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:09,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 03:34:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:09,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:34:09,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:21,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:21,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141540034] [2023-12-22 03:34:21,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141540034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:21,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:21,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 03:34:21,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931666718] [2023-12-22 03:34:21,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:21,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:34:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:34:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:34:21,060 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:24,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:24,416 INFO L93 Difference]: Finished difference Result 588 states and 1007 transitions. [2023-12-22 03:34:24,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 03:34:24,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-22 03:34:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:24,419 INFO L225 Difference]: With dead ends: 588 [2023-12-22 03:34:24,419 INFO L226 Difference]: Without dead ends: 351 [2023-12-22 03:34:24,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:34:24,421 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 299 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:24,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 409 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-22 03:34:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-22 03:34:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-12-22 03:34:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.46) internal successors, (511), 350 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 511 transitions. [2023-12-22 03:34:24,431 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 511 transitions. Word has length 191 [2023-12-22 03:34:24,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:24,431 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 511 transitions. [2023-12-22 03:34:24,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 511 transitions. [2023-12-22 03:34:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-22 03:34:24,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:24,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:24,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 03:34:24,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:24,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:24,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1088136944, now seen corresponding path program 1 times [2023-12-22 03:34:24,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908543831] [2023-12-22 03:34:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:24,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:24,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:24,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:24,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 03:34:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:24,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:34:24,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:36,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:36,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908543831] [2023-12-22 03:34:36,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908543831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:36,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:36,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 03:34:36,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578047264] [2023-12-22 03:34:36,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:34:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:34:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:34:36,358 INFO L87 Difference]: Start difference. First operand 351 states and 511 transitions. Second operand has 10 states, 10 states have (on average 19.8) internal successors, (198), 9 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:38,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:38,727 INFO L93 Difference]: Finished difference Result 729 states and 1181 transitions. [2023-12-22 03:34:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 03:34:38,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.8) internal successors, (198), 9 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-22 03:34:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:38,730 INFO L225 Difference]: With dead ends: 729 [2023-12-22 03:34:38,730 INFO L226 Difference]: Without dead ends: 492 [2023-12-22 03:34:38,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-12-22 03:34:38,732 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 337 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:38,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 328 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 03:34:38,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-22 03:34:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2023-12-22 03:34:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.340122199592668) internal successors, (658), 491 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 658 transitions. [2023-12-22 03:34:38,742 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 658 transitions. Word has length 198 [2023-12-22 03:34:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:38,743 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 658 transitions. [2023-12-22 03:34:38,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.8) internal successors, (198), 9 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 658 transitions. [2023-12-22 03:34:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-22 03:34:38,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:38,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:38,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 03:34:38,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:38,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:38,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash 395769487, now seen corresponding path program 1 times [2023-12-22 03:34:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546849532] [2023-12-22 03:34:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:38,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:38,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 03:34:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:39,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 03:34:39,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:34:41,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:41,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:41,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546849532] [2023-12-22 03:34:41,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546849532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:41,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:41,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:41,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025868327] [2023-12-22 03:34:41,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:41,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:34:41,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:34:41,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:34:41,695 INFO L87 Difference]: Start difference. First operand 492 states and 658 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:42,705 INFO L93 Difference]: Finished difference Result 887 states and 1337 transitions. [2023-12-22 03:34:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:34:42,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 206 [2023-12-22 03:34:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:42,707 INFO L225 Difference]: With dead ends: 887 [2023-12-22 03:34:42,707 INFO L226 Difference]: Without dead ends: 464 [2023-12-22 03:34:42,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 203 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 03:34:42,708 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 299 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:42,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 44 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:34:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-22 03:34:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2023-12-22 03:34:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.2267818574514038) internal successors, (568), 463 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 568 transitions. [2023-12-22 03:34:42,715 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 568 transitions. Word has length 206 [2023-12-22 03:34:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:42,716 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 568 transitions. [2023-12-22 03:34:42,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 568 transitions. [2023-12-22 03:34:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-22 03:34:42,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:42,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:42,720 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 03:34:42,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:42,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:42,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:42,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1400580741, now seen corresponding path program 1 times [2023-12-22 03:34:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:42,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234883412] [2023-12-22 03:34:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:42,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:42,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:42,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:42,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 03:34:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:43,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:34:43,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:43,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:43,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:43,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234883412] [2023-12-22 03:34:43,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234883412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:43,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:43,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:34:43,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525112577] [2023-12-22 03:34:43,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:43,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:43,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:43,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:43,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:43,102 INFO L87 Difference]: Start difference. First operand 464 states and 568 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:43,875 INFO L93 Difference]: Finished difference Result 889 states and 1184 transitions. [2023-12-22 03:34:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:34:43,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2023-12-22 03:34:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:43,878 INFO L225 Difference]: With dead ends: 889 [2023-12-22 03:34:43,878 INFO L226 Difference]: Without dead ends: 668 [2023-12-22 03:34:43,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:43,880 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 186 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:43,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 198 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:34:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-12-22 03:34:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 667. [2023-12-22 03:34:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.1846846846846846) internal successors, (789), 666 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 789 transitions. [2023-12-22 03:34:43,901 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 789 transitions. Word has length 219 [2023-12-22 03:34:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:43,901 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 789 transitions. [2023-12-22 03:34:43,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 789 transitions. [2023-12-22 03:34:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-22 03:34:43,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:43,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:43,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 03:34:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:44,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:44,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1372752404, now seen corresponding path program 1 times [2023-12-22 03:34:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061691093] [2023-12-22 03:34:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:44,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:44,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:44,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:44,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 03:34:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:44,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 03:34:44,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:46,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:46,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061691093] [2023-12-22 03:34:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061691093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:46,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:34:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051626989] [2023-12-22 03:34:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 03:34:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:46,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 03:34:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 03:34:46,557 INFO L87 Difference]: Start difference. First operand 667 states and 789 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:48,631 INFO L93 Difference]: Finished difference Result 2703 states and 3469 transitions. [2023-12-22 03:34:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 03:34:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2023-12-22 03:34:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:48,637 INFO L225 Difference]: With dead ends: 2703 [2023-12-22 03:34:48,637 INFO L226 Difference]: Without dead ends: 2160 [2023-12-22 03:34:48,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:34:48,638 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 664 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:48,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 96 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-22 03:34:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2023-12-22 03:34:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2156. [2023-12-22 03:34:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 1.1726218097447796) internal successors, (2527), 2155 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2527 transitions. [2023-12-22 03:34:48,669 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2527 transitions. Word has length 222 [2023-12-22 03:34:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:48,670 INFO L495 AbstractCegarLoop]: Abstraction has 2156 states and 2527 transitions. [2023-12-22 03:34:48,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2527 transitions. [2023-12-22 03:34:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-22 03:34:48,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:48,675 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:48,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-22 03:34:48,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:48,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:48,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash 624575253, now seen corresponding path program 1 times [2023-12-22 03:34:48,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:48,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915911027] [2023-12-22 03:34:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:48,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:48,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:48,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:34:48,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 03:34:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:49,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:34:49,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:49,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:49,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:49,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915911027] [2023-12-22 03:34:49,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915911027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:49,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:49,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178622731] [2023-12-22 03:34:49,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:49,043 INFO L87 Difference]: Start difference. First operand 2156 states and 2527 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:49,667 INFO L93 Difference]: Finished difference Result 4071 states and 4811 transitions. [2023-12-22 03:34:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:34:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2023-12-22 03:34:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:49,672 INFO L225 Difference]: With dead ends: 4071 [2023-12-22 03:34:49,672 INFO L226 Difference]: Without dead ends: 1904 [2023-12-22 03:34:49,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:49,674 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 211 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:49,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 219 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 03:34:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2023-12-22 03:34:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1902. [2023-12-22 03:34:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 1.1430825881115203) internal successors, (2173), 1901 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2173 transitions. [2023-12-22 03:34:49,695 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2173 transitions. Word has length 252 [2023-12-22 03:34:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:49,695 INFO L495 AbstractCegarLoop]: Abstraction has 1902 states and 2173 transitions. [2023-12-22 03:34:49,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2173 transitions. [2023-12-22 03:34:49,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-22 03:34:49,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:49,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:49,718 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 03:34:49,901 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 03:34:49,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:49,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1505352884, now seen corresponding path program 1 times [2023-12-22 03:34:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146616253] [2023-12-22 03:34:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:49,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:49,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:49,905 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 03:34:49,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 03:34:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:50,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-22 03:34:50,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 39 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:35:12,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:35:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 2 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:35:34,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:34,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146616253] [2023-12-22 03:35:34,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146616253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:35:34,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:35:34,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-22 03:35:34,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863145041] [2023-12-22 03:35:34,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:35:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-22 03:35:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:34,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-22 03:35:34,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-22 03:35:34,253 INFO L87 Difference]: Start difference. First operand 1902 states and 2173 transitions. Second operand has 19 states, 19 states have (on average 27.05263157894737) internal successors, (514), 18 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:46,440 INFO L93 Difference]: Finished difference Result 11879 states and 14484 transitions. [2023-12-22 03:35:46,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-22 03:35:46,441 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 27.05263157894737) internal successors, (514), 18 states have internal predecessors, (514), 0 states have call successors, (0), 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 287 [2023-12-22 03:35:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:46,462 INFO L225 Difference]: With dead ends: 11879 [2023-12-22 03:35:46,462 INFO L226 Difference]: Without dead ends: 10220 [2023-12-22 03:35:46,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=563, Invalid=1693, Unknown=0, NotChecked=0, Total=2256 [2023-12-22 03:35:46,467 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2902 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 8414 mSolverCounterSat, 1270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 9684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1270 IncrementalHoareTripleChecker+Valid, 8414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:46,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 238 Invalid, 9684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1270 Valid, 8414 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-22 03:35:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10220 states. [2023-12-22 03:35:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10220 to 7479. [2023-12-22 03:35:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 7478 states have (on average 1.187617009895694) internal successors, (8881), 7478 states have internal predecessors, (8881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 8881 transitions. [2023-12-22 03:35:46,580 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 8881 transitions. Word has length 287 [2023-12-22 03:35:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:46,580 INFO L495 AbstractCegarLoop]: Abstraction has 7479 states and 8881 transitions. [2023-12-22 03:35:46,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 27.05263157894737) internal successors, (514), 18 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 8881 transitions. [2023-12-22 03:35:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-22 03:35:46,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:46,589 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:46,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:46,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:46,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:46,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1597498396, now seen corresponding path program 1 times [2023-12-22 03:35:46,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:46,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663908544] [2023-12-22 03:35:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:46,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:46,796 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:46,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 03:35:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:46,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 03:35:46,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-22 03:35:47,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:47,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663908544] [2023-12-22 03:35:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663908544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:35:47,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439626230] [2023-12-22 03:35:47,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 03:35:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:47,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 03:35:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 03:35:47,917 INFO L87 Difference]: Start difference. First operand 7479 states and 8881 transitions. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:49,397 INFO L93 Difference]: Finished difference Result 20448 states and 24445 transitions. [2023-12-22 03:35:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 03:35:49,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 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 311 [2023-12-22 03:35:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:49,432 INFO L225 Difference]: With dead ends: 20448 [2023-12-22 03:35:49,433 INFO L226 Difference]: Without dead ends: 15514 [2023-12-22 03:35:49,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:35:49,440 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 586 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:49,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 54 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:35:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15514 states. [2023-12-22 03:35:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15514 to 11742. [2023-12-22 03:35:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11742 states, 11741 states have (on average 1.1680436078698577) internal successors, (13714), 11741 states have internal predecessors, (13714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11742 states to 11742 states and 13714 transitions. [2023-12-22 03:35:49,720 INFO L78 Accepts]: Start accepts. Automaton has 11742 states and 13714 transitions. Word has length 311 [2023-12-22 03:35:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:49,720 INFO L495 AbstractCegarLoop]: Abstraction has 11742 states and 13714 transitions. [2023-12-22 03:35:49,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 11742 states and 13714 transitions. [2023-12-22 03:35:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-22 03:35:49,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:49,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:49,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:49,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:49,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:49,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash -766201828, now seen corresponding path program 1 times [2023-12-22 03:35:49,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:49,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106008948] [2023-12-22 03:35:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:49,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:49,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:49,946 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:49,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 03:35:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:50,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:50,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-22 03:35:50,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:50,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106008948] [2023-12-22 03:35:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106008948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:50,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733086325] [2023-12-22 03:35:50,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:50,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:50,310 INFO L87 Difference]: Start difference. First operand 11742 states and 13714 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:51,540 INFO L93 Difference]: Finished difference Result 26302 states and 30863 transitions. [2023-12-22 03:35:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:51,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 379 [2023-12-22 03:35:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:51,594 INFO L225 Difference]: With dead ends: 26302 [2023-12-22 03:35:51,594 INFO L226 Difference]: Without dead ends: 14803 [2023-12-22 03:35:51,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:51,624 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 296 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:51,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 131 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:35:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14803 states. [2023-12-22 03:35:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14803 to 14787. [2023-12-22 03:35:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14787 states, 14786 states have (on average 1.1312728256458813) internal successors, (16727), 14786 states have internal predecessors, (16727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14787 states to 14787 states and 16727 transitions. [2023-12-22 03:35:51,801 INFO L78 Accepts]: Start accepts. Automaton has 14787 states and 16727 transitions. Word has length 379 [2023-12-22 03:35:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:51,802 INFO L495 AbstractCegarLoop]: Abstraction has 14787 states and 16727 transitions. [2023-12-22 03:35:51,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 14787 states and 16727 transitions. [2023-12-22 03:35:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-22 03:35:51,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:51,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:51,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:52,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:52,026 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:52,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -90569922, now seen corresponding path program 1 times [2023-12-22 03:35:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895088843] [2023-12-22 03:35:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:52,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:52,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:52,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:52,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 03:35:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:52,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:52,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-22 03:35:52,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:52,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895088843] [2023-12-22 03:35:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895088843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:52,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:52,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:52,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714825844] [2023-12-22 03:35:52,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:52,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:52,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:52,441 INFO L87 Difference]: Start difference. First operand 14787 states and 16727 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:53,236 INFO L93 Difference]: Finished difference Result 37584 states and 42705 transitions. [2023-12-22 03:35:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:53,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 03:35:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:53,315 INFO L225 Difference]: With dead ends: 37584 [2023-12-22 03:35:53,315 INFO L226 Difference]: Without dead ends: 23040 [2023-12-22 03:35:53,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:53,330 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 42 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:53,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 172 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23040 states. [2023-12-22 03:35:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23040 to 22227. [2023-12-22 03:35:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22227 states, 22226 states have (on average 1.1270584000719877) internal successors, (25050), 22226 states have internal predecessors, (25050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:53,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22227 states to 22227 states and 25050 transitions. [2023-12-22 03:35:53,565 INFO L78 Accepts]: Start accepts. Automaton has 22227 states and 25050 transitions. Word has length 382 [2023-12-22 03:35:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:53,565 INFO L495 AbstractCegarLoop]: Abstraction has 22227 states and 25050 transitions. [2023-12-22 03:35:53,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 22227 states and 25050 transitions. [2023-12-22 03:35:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-22 03:35:53,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:53,593 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:53,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:53,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:53,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:53,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1839105132, now seen corresponding path program 1 times [2023-12-22 03:35:53,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:53,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995306341] [2023-12-22 03:35:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:53,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:53,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:53,802 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:53,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 03:35:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:53,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:54,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-22 03:35:54,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:54,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:54,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995306341] [2023-12-22 03:35:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995306341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:54,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:54,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570416644] [2023-12-22 03:35:54,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:54,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:54,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:54,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:54,425 INFO L87 Difference]: Start difference. First operand 22227 states and 25050 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:55,342 INFO L93 Difference]: Finished difference Result 52143 states and 59045 transitions. [2023-12-22 03:35:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2023-12-22 03:35:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:55,384 INFO L225 Difference]: With dead ends: 52143 [2023-12-22 03:35:55,384 INFO L226 Difference]: Without dead ends: 30159 [2023-12-22 03:35:55,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:55,407 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 131 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:55,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 161 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30159 states. [2023-12-22 03:35:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30159 to 30157. [2023-12-22 03:35:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30157 states, 30156 states have (on average 1.134036344342751) internal successors, (34198), 30156 states have internal predecessors, (34198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30157 states to 30157 states and 34198 transitions. [2023-12-22 03:35:55,733 INFO L78 Accepts]: Start accepts. Automaton has 30157 states and 34198 transitions. Word has length 442 [2023-12-22 03:35:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:55,733 INFO L495 AbstractCegarLoop]: Abstraction has 30157 states and 34198 transitions. [2023-12-22 03:35:55,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:55,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30157 states and 34198 transitions. [2023-12-22 03:35:55,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-22 03:35:55,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:55,772 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:55,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-22 03:35:55,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:55,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:55,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash 326566453, now seen corresponding path program 1 times [2023-12-22 03:35:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397047384] [2023-12-22 03:35:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:55,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:55,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:55,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 03:35:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:56,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:56,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-22 03:35:56,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:56,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397047384] [2023-12-22 03:35:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397047384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:56,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:56,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195741155] [2023-12-22 03:35:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:56,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:56,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:56,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:56,494 INFO L87 Difference]: Start difference. First operand 30157 states and 34198 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:57,391 INFO L93 Difference]: Finished difference Result 68890 states and 78498 transitions. [2023-12-22 03:35:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:57,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 460 [2023-12-22 03:35:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:57,439 INFO L225 Difference]: With dead ends: 68890 [2023-12-22 03:35:57,439 INFO L226 Difference]: Without dead ends: 39179 [2023-12-22 03:35:57,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:57,463 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 126 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:57,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 242 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39179 states. [2023-12-22 03:35:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39179 to 39173. [2023-12-22 03:35:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39173 states, 39172 states have (on average 1.1292249566016543) internal successors, (44234), 39172 states have internal predecessors, (44234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39173 states to 39173 states and 44234 transitions. [2023-12-22 03:35:58,024 INFO L78 Accepts]: Start accepts. Automaton has 39173 states and 44234 transitions. Word has length 460 [2023-12-22 03:35:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:58,024 INFO L495 AbstractCegarLoop]: Abstraction has 39173 states and 44234 transitions. [2023-12-22 03:35:58,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 39173 states and 44234 transitions. [2023-12-22 03:35:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2023-12-22 03:35:58,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:58,063 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:58,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:58,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:58,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:58,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1631786583, now seen corresponding path program 1 times [2023-12-22 03:35:58,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:58,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645342478] [2023-12-22 03:35:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:58,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:58,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:58,271 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:58,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 03:35:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:58,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:58,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-12-22 03:35:58,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:58,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:58,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645342478] [2023-12-22 03:35:58,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645342478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:58,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:58,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:58,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353661292] [2023-12-22 03:35:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:58,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:58,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:58,565 INFO L87 Difference]: Start difference. First operand 39173 states and 44234 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:59,566 INFO L93 Difference]: Finished difference Result 90285 states and 102234 transitions. [2023-12-22 03:35:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 466 [2023-12-22 03:35:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:59,628 INFO L225 Difference]: With dead ends: 90285 [2023-12-22 03:35:59,629 INFO L226 Difference]: Without dead ends: 51558 [2023-12-22 03:35:59,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:59,696 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 215 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:59,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 329 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:59,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51558 states. [2023-12-22 03:36:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51558 to 45872. [2023-12-22 03:36:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45872 states, 45871 states have (on average 1.1066905016241197) internal successors, (50765), 45871 states have internal predecessors, (50765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45872 states to 45872 states and 50765 transitions. [2023-12-22 03:36:00,340 INFO L78 Accepts]: Start accepts. Automaton has 45872 states and 50765 transitions. Word has length 466 [2023-12-22 03:36:00,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:00,341 INFO L495 AbstractCegarLoop]: Abstraction has 45872 states and 50765 transitions. [2023-12-22 03:36:00,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 45872 states and 50765 transitions. [2023-12-22 03:36:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-22 03:36:00,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:00,391 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:00,401 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 03:36:00,601 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 03:36:00,601 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:00,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1467828111, now seen corresponding path program 1 times [2023-12-22 03:36:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:00,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306529366] [2023-12-22 03:36:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:00,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:00,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:00,739 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 03:36:00,740 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 03:36:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:00,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:00,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-22 03:36:01,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:01,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306529366] [2023-12-22 03:36:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306529366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:01,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:01,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771655160] [2023-12-22 03:36:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:01,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:36:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:36:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:36:01,133 INFO L87 Difference]: Start difference. First operand 45872 states and 50765 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:02,298 INFO L93 Difference]: Finished difference Result 95095 states and 104960 transitions. [2023-12-22 03:36:02,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:36:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 506 [2023-12-22 03:36:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:02,360 INFO L225 Difference]: With dead ends: 95095 [2023-12-22 03:36:02,360 INFO L226 Difference]: Without dead ends: 56233 [2023-12-22 03:36:02,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:36:02,372 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 180 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:02,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 253 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:36:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56233 states. [2023-12-22 03:36:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56233 to 56229. [2023-12-22 03:36:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56229 states, 56228 states have (on average 1.1029202532546063) internal successors, (62015), 56228 states have internal predecessors, (62015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56229 states to 56229 states and 62015 transitions. [2023-12-22 03:36:03,149 INFO L78 Accepts]: Start accepts. Automaton has 56229 states and 62015 transitions. Word has length 506 [2023-12-22 03:36:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:03,149 INFO L495 AbstractCegarLoop]: Abstraction has 56229 states and 62015 transitions. [2023-12-22 03:36:03,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 56229 states and 62015 transitions. [2023-12-22 03:36:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-22 03:36:03,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:03,274 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:03,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 03:36:03,477 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 03:36:03,478 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:03,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1421967112, now seen corresponding path program 1 times [2023-12-22 03:36:03,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:03,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906188865] [2023-12-22 03:36:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:03,483 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 03:36:03,484 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 03:36:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:03,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:36:03,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-12-22 03:36:04,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:04,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906188865] [2023-12-22 03:36:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906188865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169562138] [2023-12-22 03:36:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:04,359 INFO L87 Difference]: Start difference. First operand 56229 states and 62015 transitions. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:06,041 INFO L93 Difference]: Finished difference Result 141899 states and 156583 transitions. [2023-12-22 03:36:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 516 [2023-12-22 03:36:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:06,163 INFO L225 Difference]: With dead ends: 141899 [2023-12-22 03:36:06,163 INFO L226 Difference]: Without dead ends: 86116 [2023-12-22 03:36:06,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:06,179 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 372 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:06,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 304 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:36:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86116 states. [2023-12-22 03:36:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86116 to 84488. [2023-12-22 03:36:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84488 states, 84487 states have (on average 1.0856344763099648) internal successors, (91722), 84487 states have internal predecessors, (91722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84488 states to 84488 states and 91722 transitions. [2023-12-22 03:36:07,738 INFO L78 Accepts]: Start accepts. Automaton has 84488 states and 91722 transitions. Word has length 516 [2023-12-22 03:36:07,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:07,738 INFO L495 AbstractCegarLoop]: Abstraction has 84488 states and 91722 transitions. [2023-12-22 03:36:07,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 84488 states and 91722 transitions. [2023-12-22 03:36:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-22 03:36:07,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:07,947 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:07,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-22 03:36:08,153 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 03:36:08,154 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:08,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1241349403, now seen corresponding path program 1 times [2023-12-22 03:36:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:08,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011824190] [2023-12-22 03:36:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:08,167 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 03:36:08,168 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 03:36:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:08,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:36:08,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 391 proven. 237 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-22 03:36:11,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:36:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 357 proven. 271 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-22 03:36:13,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:13,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011824190] [2023-12-22 03:36:13,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011824190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:36:13,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:36:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-22 03:36:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514011533] [2023-12-22 03:36:13,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:36:13,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:36:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:13,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:36:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:36:13,479 INFO L87 Difference]: Start difference. First operand 84488 states and 91722 transitions. Second operand has 10 states, 10 states have (on average 67.7) internal successors, (677), 9 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:24,993 INFO L93 Difference]: Finished difference Result 308694 states and 338722 transitions. [2023-12-22 03:36:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-22 03:36:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 67.7) internal successors, (677), 9 states have internal predecessors, (677), 0 states have call successors, (0), 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 529 [2023-12-22 03:36:25,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:25,367 INFO L225 Difference]: With dead ends: 308694 [2023-12-22 03:36:25,367 INFO L226 Difference]: Without dead ends: 224652 [2023-12-22 03:36:25,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=560, Unknown=0, NotChecked=0, Total=812 [2023-12-22 03:36:25,646 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1860 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 10683 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 11054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 10683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:25,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 569 Invalid, 11054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 10683 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-12-22 03:36:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224652 states. [2023-12-22 03:36:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224652 to 160171. [2023-12-22 03:36:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160171 states, 160170 states have (on average 1.078497846038584) internal successors, (172743), 160170 states have internal predecessors, (172743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160171 states to 160171 states and 172743 transitions. [2023-12-22 03:36:28,530 INFO L78 Accepts]: Start accepts. Automaton has 160171 states and 172743 transitions. Word has length 529 [2023-12-22 03:36:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:28,530 INFO L495 AbstractCegarLoop]: Abstraction has 160171 states and 172743 transitions. [2023-12-22 03:36:28,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.7) internal successors, (677), 9 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 160171 states and 172743 transitions. [2023-12-22 03:36:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-12-22 03:36:28,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:28,828 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:28,831 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 (18)] Ended with exit code 0 [2023-12-22 03:36:29,031 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 03:36:29,031 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:29,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:29,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1288860356, now seen corresponding path program 1 times [2023-12-22 03:36:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:29,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798746568] [2023-12-22 03:36:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:29,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:29,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:29,036 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 03:36:29,036 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 03:36:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:29,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:29,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 352 proven. 212 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-22 03:36:29,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:36:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 352 proven. 212 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-22 03:36:29,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:29,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798746568] [2023-12-22 03:36:29,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798746568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:36:29,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:36:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2023-12-22 03:36:29,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134718008] [2023-12-22 03:36:29,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:36:29,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 03:36:29,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:29,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 03:36:29,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 03:36:29,984 INFO L87 Difference]: Start difference. First operand 160171 states and 172743 transitions. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:33,434 INFO L93 Difference]: Finished difference Result 417396 states and 449825 transitions. [2023-12-22 03:36:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 03:36:33,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 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 544 [2023-12-22 03:36:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:34,029 INFO L225 Difference]: With dead ends: 417396 [2023-12-22 03:36:34,030 INFO L226 Difference]: Without dead ends: 257671 [2023-12-22 03:36:34,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1088 GetRequests, 1083 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:36:34,094 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 789 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:34,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 177 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-22 03:36:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257671 states. [2023-12-22 03:36:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257671 to 239180. [2023-12-22 03:36:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239180 states, 239179 states have (on average 1.0762023421788702) internal successors, (257405), 239179 states have internal predecessors, (257405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239180 states to 239180 states and 257405 transitions. [2023-12-22 03:36:37,963 INFO L78 Accepts]: Start accepts. Automaton has 239180 states and 257405 transitions. Word has length 544 [2023-12-22 03:36:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:37,976 INFO L495 AbstractCegarLoop]: Abstraction has 239180 states and 257405 transitions. [2023-12-22 03:36:37,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 239180 states and 257405 transitions. [2023-12-22 03:36:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-22 03:36:38,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:38,420 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-22 03:36:38,425 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 03:36:38,623 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 03:36:38,624 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:38,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 170392810, now seen corresponding path program 1 times [2023-12-22 03:36:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101245453] [2023-12-22 03:36:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:38,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:38,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:38,629 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 03:36:38,633 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 03:36:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:39,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:36:39,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-12-22 03:36:39,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:39,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101245453] [2023-12-22 03:36:39,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101245453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:39,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:39,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506720577] [2023-12-22 03:36:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:36:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:36:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:36:39,106 INFO L87 Difference]: Start difference. First operand 239180 states and 257405 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:41,309 INFO L93 Difference]: Finished difference Result 433269 states and 465789 transitions. [2023-12-22 03:36:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:36:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 603 [2023-12-22 03:36:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:41,674 INFO L225 Difference]: With dead ends: 433269 [2023-12-22 03:36:41,674 INFO L226 Difference]: Without dead ends: 194739 [2023-12-22 03:36:41,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:36:41,863 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 182 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 229 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:36:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194739 states. [2023-12-22 03:36:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194739 to 190673. [2023-12-22 03:36:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190673 states, 190672 states have (on average 1.0581941763866745) internal successors, (201768), 190672 states have internal predecessors, (201768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190673 states to 190673 states and 201768 transitions. [2023-12-22 03:36:45,534 INFO L78 Accepts]: Start accepts. Automaton has 190673 states and 201768 transitions. Word has length 603 [2023-12-22 03:36:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:45,535 INFO L495 AbstractCegarLoop]: Abstraction has 190673 states and 201768 transitions. [2023-12-22 03:36:45,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 190673 states and 201768 transitions. [2023-12-22 03:36:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-22 03:36:45,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:45,710 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-22 03:36:45,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-22 03:36:45,913 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 03:36:45,913 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:45,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash 366486087, now seen corresponding path program 1 times [2023-12-22 03:36:45,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:45,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865585499] [2023-12-22 03:36:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:45,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:45,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:45,928 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 03:36:45,929 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 03:36:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:46,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:36:46,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1882 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2023-12-22 03:36:47,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:47,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:47,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865585499] [2023-12-22 03:36:47,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865585499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:47,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:47,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:47,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91553857] [2023-12-22 03:36:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:47,263 INFO L87 Difference]: Start difference. First operand 190673 states and 201768 transitions. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:49,969 INFO L93 Difference]: Finished difference Result 515165 states and 545102 transitions. [2023-12-22 03:36:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:49,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 720 [2023-12-22 03:36:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:50,783 INFO L225 Difference]: With dead ends: 515165 [2023-12-22 03:36:50,784 INFO L226 Difference]: Without dead ends: 325882 [2023-12-22 03:36:50,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:50,876 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 304 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:50,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 391 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:36:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325882 states. [2023-12-22 03:36:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325882 to 311049. [2023-12-22 03:36:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311049 states, 311048 states have (on average 1.0587304853270234) internal successors, (329316), 311048 states have internal predecessors, (329316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311049 states to 311049 states and 329316 transitions. [2023-12-22 03:36:56,806 INFO L78 Accepts]: Start accepts. Automaton has 311049 states and 329316 transitions. Word has length 720 [2023-12-22 03:36:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:56,806 INFO L495 AbstractCegarLoop]: Abstraction has 311049 states and 329316 transitions. [2023-12-22 03:36:56,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 311049 states and 329316 transitions. [2023-12-22 03:36:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-22 03:36:57,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:57,117 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:57,121 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 (21)] Ended with exit code 0 [2023-12-22 03:36:57,321 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 03:36:57,322 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:57,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:57,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1812313114, now seen corresponding path program 1 times [2023-12-22 03:36:57,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:57,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608274891] [2023-12-22 03:36:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:57,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:57,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:57,333 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 03:36:57,700 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 03:36:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:58,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:36:58,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 1107 proven. 242 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-12-22 03:37:00,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:37:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 1107 proven. 242 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-12-22 03:37:02,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:02,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608274891] [2023-12-22 03:37:02,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608274891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:37:02,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:37:02,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-22 03:37:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906361166] [2023-12-22 03:37:02,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:37:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-22 03:37:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-22 03:37:02,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:37:02,271 INFO L87 Difference]: Start difference. First operand 311049 states and 329316 transitions. Second operand has 14 states, 14 states have (on average 51.42857142857143) internal successors, (720), 13 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:10,500 INFO L93 Difference]: Finished difference Result 874197 states and 926274 transitions. [2023-12-22 03:37:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-22 03:37:10,501 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 51.42857142857143) internal successors, (720), 13 states have internal predecessors, (720), 0 states have call successors, (0), 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 722 [2023-12-22 03:37:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:11,830 INFO L225 Difference]: With dead ends: 874197 [2023-12-22 03:37:11,830 INFO L226 Difference]: Without dead ends: 563929 [2023-12-22 03:37:11,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 1430 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=291, Unknown=0, NotChecked=0, Total=462 [2023-12-22 03:37:11,959 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 2262 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4964 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 4964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:11,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 214 Invalid, 5556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 4964 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-22 03:37:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563929 states. [2023-12-22 03:37:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563929 to 539099. [2023-12-22 03:37:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539099 states, 539098 states have (on average 1.0478502980905142) internal successors, (564894), 539098 states have internal predecessors, (564894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539099 states to 539099 states and 564894 transitions. [2023-12-22 03:37:21,590 INFO L78 Accepts]: Start accepts. Automaton has 539099 states and 564894 transitions. Word has length 722 [2023-12-22 03:37:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:21,591 INFO L495 AbstractCegarLoop]: Abstraction has 539099 states and 564894 transitions. [2023-12-22 03:37:21,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 51.42857142857143) internal successors, (720), 13 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 539099 states and 564894 transitions. [2023-12-22 03:37:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2023-12-22 03:37:22,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:22,301 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:37:22,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 03:37:22,504 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 03:37:22,505 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:22,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:22,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1926935165, now seen corresponding path program 1 times [2023-12-22 03:37:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:22,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921982332] [2023-12-22 03:37:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:22,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:37:22,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:22,511 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 03:37:22,511 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 03:37:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:23,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:37:23,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1756 backedges. 984 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-12-22 03:37:23,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:23,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:23,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921982332] [2023-12-22 03:37:23,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921982332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:23,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:23,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:37:23,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148791190] [2023-12-22 03:37:23,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:23,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:37:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:23,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:37:23,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:37:23,413 INFO L87 Difference]: Start difference. First operand 539099 states and 564894 transitions. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:31,121 INFO L93 Difference]: Finished difference Result 1513115 states and 1585553 transitions. [2023-12-22 03:37:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:37:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 739 [2023-12-22 03:37:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:32,866 INFO L225 Difference]: With dead ends: 1513115 [2023-12-22 03:37:32,867 INFO L226 Difference]: Without dead ends: 985588 [2023-12-22 03:37:33,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 736 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 03:37:33,558 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 415 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:33,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 47 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:37:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985588 states. [2023-12-22 03:37:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985588 to 948230. [2023-12-22 03:37:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948230 states, 948229 states have (on average 1.0489143445306988) internal successors, (994611), 948229 states have internal predecessors, (994611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948230 states to 948230 states and 994611 transitions. [2023-12-22 03:37:51,426 INFO L78 Accepts]: Start accepts. Automaton has 948230 states and 994611 transitions. Word has length 739 [2023-12-22 03:37:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:51,426 INFO L495 AbstractCegarLoop]: Abstraction has 948230 states and 994611 transitions. [2023-12-22 03:37:51,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 948230 states and 994611 transitions. [2023-12-22 03:37:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-22 03:37:52,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:52,412 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 03:37:52,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-22 03:37:52,616 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 03:37:52,617 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:52,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1036240678, now seen corresponding path program 1 times [2023-12-22 03:37:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:52,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643208620] [2023-12-22 03:37:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:52,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:37:52,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:52,642 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 03:37:52,669 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 03:37:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:52,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 03:37:52,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 909 proven. 8 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2023-12-22 03:37:55,509 INFO L327 TraceCheckSpWp]: Computing backward predicates...