/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_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:37:06,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:37:07,010 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 03:37:07,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:37:07,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:37:07,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:37:07,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:37:07,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:37:07,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:37:07,049 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:37:07,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:37:07,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:37:07,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:37:07,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:37:07,052 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:37:07,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:37:07,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:37:07,053 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:37:07,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:37:07,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:37:07,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:37:07,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:37:07,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:37:07,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:37:07,054 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:37:07,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:37:07,055 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:37:07,055 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:37:07,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:37:07,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:37:07,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:37:07,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:37:07,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:37:07,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:37:07,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:37:07,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:37:07,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:37:07,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:37:07,058 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:37:07,058 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:37:07,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:37:07,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:37:07,059 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:37:07,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:37:07,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:37:07,059 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:37:07,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:37:07,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:37:07,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:37:07,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:37:07,305 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:37:07,305 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:37:07,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18.c [2023-12-22 03:37:08,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:37:08,830 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:37:08,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label18.c [2023-12-22 03:37:08,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df05413/dce05df6675e4a059a7d9bbcf8f54224/FLAG7889a0ebc [2023-12-22 03:37:08,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df05413/dce05df6675e4a059a7d9bbcf8f54224 [2023-12-22 03:37:08,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:37:08,872 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:37:08,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:37:08,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:37:08,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:37:08,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:37:08" (1/1) ... [2023-12-22 03:37:08,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff5b4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:08, skipping insertion in model container [2023-12-22 03:37:08,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:37:08" (1/1) ... [2023-12-22 03:37:08,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:37:09,494 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_label18.c[61636,61649] [2023-12-22 03:37:09,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:37:09,539 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:37:09,699 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_label18.c[61636,61649] [2023-12-22 03:37:09,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:37:09,724 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:37:09,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09 WrapperNode [2023-12-22 03:37:09,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:37:09,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:37:09,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:37:09,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:37:09,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,858 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-12-22 03:37:09,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:37:09,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:37:09,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:37:09,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:37:09,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,934 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 03:37:09,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:09,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:10,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:10,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:10,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:37:10,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:37:10,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:37:10,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:37:10,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (1/1) ... [2023-12-22 03:37:10,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:37:10,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:37:10,083 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 03:37:10,104 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 03:37:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:37:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:37:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:37:10,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:37:10,218 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:37:10,221 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:37:12,227 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:37:12,268 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:37:12,268 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:37:12,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:37:12 BoogieIcfgContainer [2023-12-22 03:37:12,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:37:12,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:37:12,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:37:12,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:37:12,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:37:08" (1/3) ... [2023-12-22 03:37:12,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329334f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:37:12, skipping insertion in model container [2023-12-22 03:37:12,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:37:09" (2/3) ... [2023-12-22 03:37:12,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329334f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:37:12, skipping insertion in model container [2023-12-22 03:37:12,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:37:12" (3/3) ... [2023-12-22 03:37:12,275 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label18.c [2023-12-22 03:37:12,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:37:12,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:37:12,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:37:12,335 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;@4aa9f1ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:37:12,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:37:12,340 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 03:37:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-22 03:37:12,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:12,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:37:12,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:12,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1313278425, now seen corresponding path program 1 times [2023-12-22 03:37:12,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:12,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093301745] [2023-12-22 03:37:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:12,374 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 03:37:12,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:12,376 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 03:37:12,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 03:37:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:12,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 03:37:12,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:12,664 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 03:37:12,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:12,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093301745] [2023-12-22 03:37:12,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093301745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:12,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:12,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:37:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537890346] [2023-12-22 03:37:12,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:12,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 03:37:12,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 03:37:12,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:37:12,717 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 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:12,768 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-22 03:37:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 03:37:12,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-22 03:37:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:12,779 INFO L225 Difference]: With dead ends: 479 [2023-12-22 03:37:12,779 INFO L226 Difference]: Without dead ends: 238 [2023-12-22 03:37:12,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 201 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 03:37:12,785 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 03:37:12,785 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 03:37:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-22 03:37:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-22 03:37:12,827 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 03:37:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-22 03:37:12,830 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 202 [2023-12-22 03:37:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:12,831 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-22 03:37:12,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-22 03:37:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-22 03:37:12,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:12,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:37:12,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 03:37:13,044 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 03:37:13,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:13,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1857362597, now seen corresponding path program 1 times [2023-12-22 03:37:13,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:13,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866616648] [2023-12-22 03:37:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:13,051 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 03:37:13,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:13,053 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 03:37:13,100 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 03:37:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:13,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:37:13,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:37:26,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:26,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:26,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866616648] [2023-12-22 03:37:26,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866616648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:26,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:26,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 03:37:26,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410141024] [2023-12-22 03:37:26,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:26,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:37:26,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:37:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:37:26,115 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:29,993 INFO L93 Difference]: Finished difference Result 588 states and 1007 transitions. [2023-12-22 03:37:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 03:37:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-22 03:37:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:29,997 INFO L225 Difference]: With dead ends: 588 [2023-12-22 03:37:29,997 INFO L226 Difference]: Without dead ends: 351 [2023-12-22 03:37:29,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:37:30,000 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 299 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:30,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 409 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-22 03:37:30,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-22 03:37:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-12-22 03:37:30,018 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 03:37:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 511 transitions. [2023-12-22 03:37:30,019 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 511 transitions. Word has length 202 [2023-12-22 03:37:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:30,020 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 511 transitions. [2023-12-22 03:37:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 511 transitions. [2023-12-22 03:37:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-22 03:37:30,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:30,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:37:30,042 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 03:37:30,227 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 03:37:30,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:30,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash 383240342, now seen corresponding path program 1 times [2023-12-22 03:37:30,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:30,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169679929] [2023-12-22 03:37:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:30,230 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 03:37:30,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:30,231 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 03:37:30,232 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 03:37:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:30,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:37:30,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:43,961 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 03:37:43,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:43,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:43,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169679929] [2023-12-22 03:37:43,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169679929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:43,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:43,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 03:37:43,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133606772] [2023-12-22 03:37:43,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:43,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:37:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:37:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:37:43,964 INFO L87 Difference]: Start difference. First operand 351 states and 511 transitions. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:46,936 INFO L93 Difference]: Finished difference Result 729 states and 1181 transitions. [2023-12-22 03:37:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 03:37:46,937 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2023-12-22 03:37:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:46,941 INFO L225 Difference]: With dead ends: 729 [2023-12-22 03:37:46,941 INFO L226 Difference]: Without dead ends: 492 [2023-12-22 03:37:46,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-12-22 03:37:46,943 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 231 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 347 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-22 03:37:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-22 03:37:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2023-12-22 03:37:46,964 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 03:37:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 658 transitions. [2023-12-22 03:37:46,966 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 658 transitions. Word has length 209 [2023-12-22 03:37:46,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:46,966 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 658 transitions. [2023-12-22 03:37:46,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 658 transitions. [2023-12-22 03:37:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 03:37:46,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:46,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:37:46,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-22 03:37:47,172 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 03:37:47,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:47,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash -650559849, now seen corresponding path program 1 times [2023-12-22 03:37:47,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:47,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49614759] [2023-12-22 03:37:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:47,176 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 03:37:47,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:47,177 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 03:37:47,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 03:37:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:47,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 03:37:47,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:48,940 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 03:37:48,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:48,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49614759] [2023-12-22 03:37:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49614759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:48,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:48,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:37:48,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951290977] [2023-12-22 03:37:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 03:37:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 03:37:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 03:37:48,944 INFO L87 Difference]: Start difference. First operand 492 states and 658 transitions. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:50,823 INFO L93 Difference]: Finished difference Result 1299 states and 2028 transitions. [2023-12-22 03:37:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 03:37:50,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 217 [2023-12-22 03:37:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:50,829 INFO L225 Difference]: With dead ends: 1299 [2023-12-22 03:37:50,829 INFO L226 Difference]: Without dead ends: 1062 [2023-12-22 03:37:50,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 213 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 03:37:50,831 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 802 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:50,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 55 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-22 03:37:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-22 03:37:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 887. [2023-12-22 03:37:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.335214446952596) internal successors, (1183), 886 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1183 transitions. [2023-12-22 03:37:50,856 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1183 transitions. Word has length 217 [2023-12-22 03:37:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:50,856 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1183 transitions. [2023-12-22 03:37:50,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1183 transitions. [2023-12-22 03:37:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-22 03:37:50,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:50,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:50,864 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 03:37:51,063 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 03:37:51,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:51,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2043979605, now seen corresponding path program 1 times [2023-12-22 03:37:51,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:51,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462299783] [2023-12-22 03:37:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:51,066 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 03:37:51,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:51,068 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 03:37:51,069 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 03:37:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:51,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:37:51,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-22 03:37:51,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:51,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462299783] [2023-12-22 03:37:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462299783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:51,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:37:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273163785] [2023-12-22 03:37:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:51,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:37:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:37:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:37:51,232 INFO L87 Difference]: Start difference. First operand 887 states and 1183 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:52,309 INFO L93 Difference]: Finished difference Result 2131 states and 2991 transitions. [2023-12-22 03:37:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:37:52,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 228 [2023-12-22 03:37:52,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:52,315 INFO L225 Difference]: With dead ends: 2131 [2023-12-22 03:37:52,315 INFO L226 Difference]: Without dead ends: 1499 [2023-12-22 03:37:52,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 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 03:37:52,317 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 214 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:52,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 287 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:37:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2023-12-22 03:37:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1497. [2023-12-22 03:37:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1496 states have (on average 1.2379679144385027) internal successors, (1852), 1496 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1852 transitions. [2023-12-22 03:37:52,348 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1852 transitions. Word has length 228 [2023-12-22 03:37:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:52,349 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 1852 transitions. [2023-12-22 03:37:52,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1852 transitions. [2023-12-22 03:37:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-22 03:37:52,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:52,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:37:52,364 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 03:37:52,557 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 03:37:52,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:52,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:52,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1178954625, now seen corresponding path program 1 times [2023-12-22 03:37:52,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:52,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293201311] [2023-12-22 03:37:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:52,560 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 03:37:52,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:52,561 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 03:37:52,564 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 03:37:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:52,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:37:52,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:52,761 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 03:37:52,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:52,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293201311] [2023-12-22 03:37:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293201311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:52,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:52,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:37:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397142929] [2023-12-22 03:37:52,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:37:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:37:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:37:52,764 INFO L87 Difference]: Start difference. First operand 1497 states and 1852 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:53,837 INFO L93 Difference]: Finished difference Result 3562 states and 4560 transitions. [2023-12-22 03:37:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:37:53,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2023-12-22 03:37:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:53,845 INFO L225 Difference]: With dead ends: 3562 [2023-12-22 03:37:53,845 INFO L226 Difference]: Without dead ends: 2320 [2023-12-22 03:37:53,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 228 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 03:37:53,848 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 216 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:53,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 233 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 03:37:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2023-12-22 03:37:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2318. [2023-12-22 03:37:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.2451445835131636) internal successors, (2885), 2317 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2885 transitions. [2023-12-22 03:37:53,886 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2885 transitions. Word has length 230 [2023-12-22 03:37:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:53,886 INFO L495 AbstractCegarLoop]: Abstraction has 2318 states and 2885 transitions. [2023-12-22 03:37:53,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2885 transitions. [2023-12-22 03:37:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-22 03:37:53,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:53,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:37:53,896 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 03:37:54,094 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 03:37:54,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:54,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:54,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1006539762, now seen corresponding path program 1 times [2023-12-22 03:37:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141522928] [2023-12-22 03:37:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:54,097 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 03:37:54,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:54,098 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 03:37:54,099 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 03:37:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:54,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 03:37:54,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:57,131 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 03:37:57,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:57,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:57,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141522928] [2023-12-22 03:37:57,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141522928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:57,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:57,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:37:57,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618242368] [2023-12-22 03:37:57,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:57,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:37:57,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:57,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:37:57,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:37:57,134 INFO L87 Difference]: Start difference. First operand 2318 states and 2885 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:58,435 INFO L93 Difference]: Finished difference Result 6575 states and 8202 transitions. [2023-12-22 03:37:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:37:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2023-12-22 03:37:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:58,448 INFO L225 Difference]: With dead ends: 6575 [2023-12-22 03:37:58,448 INFO L226 Difference]: Without dead ends: 4152 [2023-12-22 03:37:58,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 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 03:37:58,452 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 202 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:58,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 106 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:37:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2023-12-22 03:37:58,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 3744. [2023-12-22 03:37:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 1.1934277317659632) internal successors, (4467), 3743 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 4467 transitions. [2023-12-22 03:37:58,526 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 4467 transitions. Word has length 233 [2023-12-22 03:37:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:58,526 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 4467 transitions. [2023-12-22 03:37:58,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:58,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 4467 transitions. [2023-12-22 03:37:58,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-22 03:37:58,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:58,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:58,540 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 (8)] Ended with exit code 0 [2023-12-22 03:37:58,740 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 03:37:58,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:58,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1978665242, now seen corresponding path program 1 times [2023-12-22 03:37:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:58,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091195100] [2023-12-22 03:37:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:58,744 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 03:37:58,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:58,746 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 03:37:58,784 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 03:37:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:58,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:37:58,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-22 03:37:59,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:37:59,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:37:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091195100] [2023-12-22 03:37:59,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091195100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:37:59,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:37:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:37:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975959222] [2023-12-22 03:37:59,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:37:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:37:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:37:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:37:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:37:59,033 INFO L87 Difference]: Start difference. First operand 3744 states and 4467 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:37:59,349 INFO L93 Difference]: Finished difference Result 9701 states and 11671 transitions. [2023-12-22 03:37:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:37:59,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2023-12-22 03:37:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:37:59,365 INFO L225 Difference]: With dead ends: 9701 [2023-12-22 03:37:59,365 INFO L226 Difference]: Without dead ends: 6200 [2023-12-22 03:37:59,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:37:59,371 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 214 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:37:59,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 460 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 03:37:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2023-12-22 03:37:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 6198. [2023-12-22 03:37:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6198 states, 6197 states have (on average 1.2000968210424399) internal successors, (7437), 6197 states have internal predecessors, (7437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6198 states to 6198 states and 7437 transitions. [2023-12-22 03:37:59,496 INFO L78 Accepts]: Start accepts. Automaton has 6198 states and 7437 transitions. Word has length 303 [2023-12-22 03:37:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:37:59,497 INFO L495 AbstractCegarLoop]: Abstraction has 6198 states and 7437 transitions. [2023-12-22 03:37:59,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:37:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6198 states and 7437 transitions. [2023-12-22 03:37:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-22 03:37:59,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:37:59,507 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, 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] [2023-12-22 03:37:59,510 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 03:37:59,710 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 03:37:59,710 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:37:59,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:37:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash -930018321, now seen corresponding path program 1 times [2023-12-22 03:37:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:37:59,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865409271] [2023-12-22 03:37:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:37:59,713 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 03:37:59,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:37:59,714 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 03:37:59,715 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 03:37:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:37:59,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:37:59,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-22 03:38:00,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:00,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:00,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865409271] [2023-12-22 03:38:00,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865409271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:00,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:00,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:38:00,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606873743] [2023-12-22 03:38:00,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:00,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:00,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:00,010 INFO L87 Difference]: Start difference. First operand 6198 states and 7437 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:00,828 INFO L93 Difference]: Finished difference Result 14996 states and 18419 transitions. [2023-12-22 03:38:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 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 328 [2023-12-22 03:38:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:00,848 INFO L225 Difference]: With dead ends: 14996 [2023-12-22 03:38:00,848 INFO L226 Difference]: Without dead ends: 9041 [2023-12-22 03:38:00,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:00,856 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 112 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:00,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 205 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9041 states. [2023-12-22 03:38:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9041 to 8229. [2023-12-22 03:38:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8229 states, 8228 states have (on average 1.1689353427321343) internal successors, (9618), 8228 states have internal predecessors, (9618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8229 states to 8229 states and 9618 transitions. [2023-12-22 03:38:00,998 INFO L78 Accepts]: Start accepts. Automaton has 8229 states and 9618 transitions. Word has length 328 [2023-12-22 03:38:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:00,998 INFO L495 AbstractCegarLoop]: Abstraction has 8229 states and 9618 transitions. [2023-12-22 03:38:00,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 8229 states and 9618 transitions. [2023-12-22 03:38:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-22 03:38:01,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:01,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:38:01,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:01,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:01,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:01,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash -22582216, now seen corresponding path program 1 times [2023-12-22 03:38:01,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:01,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982477166] [2023-12-22 03:38:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:01,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:01,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:01,218 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:01,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 03:38:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:01,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:01,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:38:01,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:01,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982477166] [2023-12-22 03:38:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982477166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:01,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:01,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:01,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64636890] [2023-12-22 03:38:01,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:01,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:01,563 INFO L87 Difference]: Start difference. First operand 8229 states and 9618 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:02,715 INFO L93 Difference]: Finished difference Result 26236 states and 30841 transitions. [2023-12-22 03:38:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2023-12-22 03:38:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:02,749 INFO L225 Difference]: With dead ends: 26236 [2023-12-22 03:38:02,749 INFO L226 Difference]: Without dead ends: 18250 [2023-12-22 03:38:02,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:02,760 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 379 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:02,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 437 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:38:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18250 states. [2023-12-22 03:38:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18250 to 18232. [2023-12-22 03:38:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18232 states, 18231 states have (on average 1.1705885579507433) internal successors, (21341), 18231 states have internal predecessors, (21341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18232 states to 18232 states and 21341 transitions. [2023-12-22 03:38:02,986 INFO L78 Accepts]: Start accepts. Automaton has 18232 states and 21341 transitions. Word has length 335 [2023-12-22 03:38:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:02,986 INFO L495 AbstractCegarLoop]: Abstraction has 18232 states and 21341 transitions. [2023-12-22 03:38:02,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 18232 states and 21341 transitions. [2023-12-22 03:38:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-22 03:38:03,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:03,006 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:38:03,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:03,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:03,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:03,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash -392418091, now seen corresponding path program 1 times [2023-12-22 03:38:03,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:03,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187760080] [2023-12-22 03:38:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:03,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:03,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:03,216 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:03,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 03:38:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:03,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:03,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-22 03:38:03,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:03,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187760080] [2023-12-22 03:38:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187760080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:03,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151823783] [2023-12-22 03:38:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:03,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:03,422 INFO L87 Difference]: Start difference. First operand 18232 states and 21341 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:04,327 INFO L93 Difference]: Finished difference Result 51701 states and 60830 transitions. [2023-12-22 03:38:04,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:04,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 348 [2023-12-22 03:38:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:04,395 INFO L225 Difference]: With dead ends: 51701 [2023-12-22 03:38:04,396 INFO L226 Difference]: Without dead ends: 33712 [2023-12-22 03:38:04,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:04,423 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 211 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:04,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 231 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33712 states. [2023-12-22 03:38:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33712 to 33692. [2023-12-22 03:38:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33692 states, 33691 states have (on average 1.1556498768217032) internal successors, (38935), 33691 states have internal predecessors, (38935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:04,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33692 states to 33692 states and 38935 transitions. [2023-12-22 03:38:04,932 INFO L78 Accepts]: Start accepts. Automaton has 33692 states and 38935 transitions. Word has length 348 [2023-12-22 03:38:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:04,932 INFO L495 AbstractCegarLoop]: Abstraction has 33692 states and 38935 transitions. [2023-12-22 03:38:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 33692 states and 38935 transitions. [2023-12-22 03:38:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-22 03:38:04,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:04,958 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:04,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:05,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:05,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:05,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -53417719, now seen corresponding path program 1 times [2023-12-22 03:38:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561667872] [2023-12-22 03:38:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:05,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:05,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:05,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:05,168 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 (13)] Waiting until timeout for monitored process [2023-12-22 03:38:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:05,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:05,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:38:05,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:05,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:05,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561667872] [2023-12-22 03:38:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561667872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:05,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:05,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863481977] [2023-12-22 03:38:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:05,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:05,445 INFO L87 Difference]: Start difference. First operand 33692 states and 38935 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:07,049 INFO L93 Difference]: Finished difference Result 88314 states and 103510 transitions. [2023-12-22 03:38:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:07,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 354 [2023-12-22 03:38:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:07,142 INFO L225 Difference]: With dead ends: 88314 [2023-12-22 03:38:07,142 INFO L226 Difference]: Without dead ends: 54865 [2023-12-22 03:38:07,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:07,185 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 426 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:07,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 144 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 03:38:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54865 states. [2023-12-22 03:38:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54865 to 52380. [2023-12-22 03:38:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52380 states, 52379 states have (on average 1.1544512113633327) internal successors, (60469), 52379 states have internal predecessors, (60469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52380 states to 52380 states and 60469 transitions. [2023-12-22 03:38:08,054 INFO L78 Accepts]: Start accepts. Automaton has 52380 states and 60469 transitions. Word has length 354 [2023-12-22 03:38:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:08,055 INFO L495 AbstractCegarLoop]: Abstraction has 52380 states and 60469 transitions. [2023-12-22 03:38:08,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 52380 states and 60469 transitions. [2023-12-22 03:38:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-22 03:38:08,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:08,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:38:08,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:08,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:08,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:08,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:08,288 INFO L85 PathProgramCache]: Analyzing trace with hash 144887424, now seen corresponding path program 1 times [2023-12-22 03:38:08,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:08,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149330878] [2023-12-22 03:38:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:08,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:08,293 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:08,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 03:38:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:08,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:08,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:38:08,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:08,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:08,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149330878] [2023-12-22 03:38:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149330878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:08,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:08,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236741904] [2023-12-22 03:38:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:08,549 INFO L87 Difference]: Start difference. First operand 52380 states and 60469 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:09,746 INFO L93 Difference]: Finished difference Result 120564 states and 139601 transitions. [2023-12-22 03:38:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2023-12-22 03:38:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:09,843 INFO L225 Difference]: With dead ends: 120564 [2023-12-22 03:38:09,843 INFO L226 Difference]: Without dead ends: 68427 [2023-12-22 03:38:09,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:09,890 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 173 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:09,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 257 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:38:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68427 states. [2023-12-22 03:38:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68427 to 68418. [2023-12-22 03:38:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68418 states, 68417 states have (on average 1.1427130683894353) internal successors, (78181), 68417 states have internal predecessors, (78181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68418 states to 68418 states and 78181 transitions. [2023-12-22 03:38:11,102 INFO L78 Accepts]: Start accepts. Automaton has 68418 states and 78181 transitions. Word has length 359 [2023-12-22 03:38:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:11,103 INFO L495 AbstractCegarLoop]: Abstraction has 68418 states and 78181 transitions. [2023-12-22 03:38:11,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 68418 states and 78181 transitions. [2023-12-22 03:38:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-22 03:38:11,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:11,130 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 03:38:11,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:11,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:11,334 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:11,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -962118508, now seen corresponding path program 1 times [2023-12-22 03:38:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634849077] [2023-12-22 03:38:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:11,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:11,457 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:11,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 03:38:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:11,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:11,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:38:11,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:11,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634849077] [2023-12-22 03:38:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634849077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:11,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:11,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244263716] [2023-12-22 03:38:11,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:11,815 INFO L87 Difference]: Start difference. First operand 68418 states and 78181 transitions. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:13,183 INFO L93 Difference]: Finished difference Result 137832 states and 157368 transitions. [2023-12-22 03:38:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:13,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 362 [2023-12-22 03:38:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:13,264 INFO L225 Difference]: With dead ends: 137832 [2023-12-22 03:38:13,264 INFO L226 Difference]: Without dead ends: 69657 [2023-12-22 03:38:13,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:13,320 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 495 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:13,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 365 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:38:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69657 states. [2023-12-22 03:38:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69657 to 69642. [2023-12-22 03:38:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69642 states, 69641 states have (on average 1.1396016714291868) internal successors, (79363), 69641 states have internal predecessors, (79363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69642 states to 69642 states and 79363 transitions. [2023-12-22 03:38:14,429 INFO L78 Accepts]: Start accepts. Automaton has 69642 states and 79363 transitions. Word has length 362 [2023-12-22 03:38:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:14,430 INFO L495 AbstractCegarLoop]: Abstraction has 69642 states and 79363 transitions. [2023-12-22 03:38:14,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 69642 states and 79363 transitions. [2023-12-22 03:38:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-22 03:38:14,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:14,461 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:14,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:14,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:14,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:14,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash 525355414, now seen corresponding path program 1 times [2023-12-22 03:38:14,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:14,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686834623] [2023-12-22 03:38:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:14,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:14,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:14,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:14,669 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 (16)] Waiting until timeout for monitored process [2023-12-22 03:38:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:14,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:14,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-22 03:38:15,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:15,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:15,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686834623] [2023-12-22 03:38:15,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686834623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:15,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:15,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:15,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248415776] [2023-12-22 03:38:15,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:15,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:15,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:15,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:15,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:15,004 INFO L87 Difference]: Start difference. First operand 69642 states and 79363 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:16,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:16,220 INFO L93 Difference]: Finished difference Result 158128 states and 179386 transitions. [2023-12-22 03:38:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:16,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2023-12-22 03:38:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:16,316 INFO L225 Difference]: With dead ends: 158128 [2023-12-22 03:38:16,316 INFO L226 Difference]: Without dead ends: 88729 [2023-12-22 03:38:16,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:16,345 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 217 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:16,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 229 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88729 states. [2023-12-22 03:38:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88729 to 83634. [2023-12-22 03:38:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83634 states, 83633 states have (on average 1.1070869154520344) internal successors, (92589), 83633 states have internal predecessors, (92589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83634 states to 83634 states and 92589 transitions. [2023-12-22 03:38:17,588 INFO L78 Accepts]: Start accepts. Automaton has 83634 states and 92589 transitions. Word has length 381 [2023-12-22 03:38:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:17,589 INFO L495 AbstractCegarLoop]: Abstraction has 83634 states and 92589 transitions. [2023-12-22 03:38:17,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 83634 states and 92589 transitions. [2023-12-22 03:38:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-22 03:38:17,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:17,624 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:17,631 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 03:38:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:17,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:17,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash 296148967, now seen corresponding path program 1 times [2023-12-22 03:38:17,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709995530] [2023-12-22 03:38:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:17,835 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:17,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 03:38:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:18,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:18,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-22 03:38:18,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:18,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:18,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709995530] [2023-12-22 03:38:18,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709995530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:18,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:18,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:38:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755866122] [2023-12-22 03:38:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:18,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:18,295 INFO L87 Difference]: Start difference. First operand 83634 states and 92589 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 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 03:38:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:19,608 INFO L93 Difference]: Finished difference Result 166835 states and 184738 transitions. [2023-12-22 03:38:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 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 399 [2023-12-22 03:38:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:19,711 INFO L225 Difference]: With dead ends: 166835 [2023-12-22 03:38:19,712 INFO L226 Difference]: Without dead ends: 83444 [2023-12-22 03:38:19,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:19,763 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 114 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:19,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 173 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83444 states. [2023-12-22 03:38:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83444 to 80181. [2023-12-22 03:38:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80181 states, 80180 states have (on average 1.094063357445747) internal successors, (87722), 80180 states have internal predecessors, (87722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80181 states to 80181 states and 87722 transitions. [2023-12-22 03:38:21,042 INFO L78 Accepts]: Start accepts. Automaton has 80181 states and 87722 transitions. Word has length 399 [2023-12-22 03:38:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:21,042 INFO L495 AbstractCegarLoop]: Abstraction has 80181 states and 87722 transitions. [2023-12-22 03:38:21,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 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 03:38:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 80181 states and 87722 transitions. [2023-12-22 03:38:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-22 03:38:21,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:21,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:21,076 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 03:38:21,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:21,274 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:21,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:21,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1917173297, now seen corresponding path program 1 times [2023-12-22 03:38:21,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:21,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567146469] [2023-12-22 03:38:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:21,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:21,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:21,277 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:21,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 03:38:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:21,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:21,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-22 03:38:22,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:22,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:22,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567146469] [2023-12-22 03:38:22,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567146469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:22,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:22,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:22,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262625242] [2023-12-22 03:38:22,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:22,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:22,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:22,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:22,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:22,014 INFO L87 Difference]: Start difference. First operand 80181 states and 87722 transitions. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:23,755 INFO L93 Difference]: Finished difference Result 161373 states and 176510 transitions. [2023-12-22 03:38:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:23,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 416 [2023-12-22 03:38:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:23,837 INFO L225 Difference]: With dead ends: 161373 [2023-12-22 03:38:23,838 INFO L226 Difference]: Without dead ends: 81435 [2023-12-22 03:38:23,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:23,889 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 313 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:23,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 195 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 03:38:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81435 states. [2023-12-22 03:38:24,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81435 to 76515. [2023-12-22 03:38:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76515 states, 76514 states have (on average 1.0675039861986042) internal successors, (81679), 76514 states have internal predecessors, (81679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76515 states to 76515 states and 81679 transitions. [2023-12-22 03:38:24,981 INFO L78 Accepts]: Start accepts. Automaton has 76515 states and 81679 transitions. Word has length 416 [2023-12-22 03:38:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:24,981 INFO L495 AbstractCegarLoop]: Abstraction has 76515 states and 81679 transitions. [2023-12-22 03:38:24,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 76515 states and 81679 transitions. [2023-12-22 03:38:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-22 03:38:25,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:25,009 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:25,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:25,209 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 03:38:25,210 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:25,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1611499816, now seen corresponding path program 1 times [2023-12-22 03:38:25,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:25,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940337737] [2023-12-22 03:38:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:25,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:25,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:25,216 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 03:38:25,218 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 03:38:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:25,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:25,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:38:25,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:25,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:25,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940337737] [2023-12-22 03:38:25,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940337737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:25,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:25,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:38:25,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106648917] [2023-12-22 03:38:25,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:25,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:25,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:25,813 INFO L87 Difference]: Start difference. First operand 76515 states and 81679 transitions. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:27,601 INFO L93 Difference]: Finished difference Result 156489 states and 167189 transitions. [2023-12-22 03:38:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:27,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 420 [2023-12-22 03:38:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:27,679 INFO L225 Difference]: With dead ends: 156489 [2023-12-22 03:38:27,679 INFO L226 Difference]: Without dead ends: 80217 [2023-12-22 03:38:27,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:27,707 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 351 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:27,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 124 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:38:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80217 states. [2023-12-22 03:38:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80217 to 76511. [2023-12-22 03:38:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76511 states, 76510 states have (on average 1.0643445301267809) internal successors, (81433), 76510 states have internal predecessors, (81433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76511 states to 76511 states and 81433 transitions. [2023-12-22 03:38:29,001 INFO L78 Accepts]: Start accepts. Automaton has 76511 states and 81433 transitions. Word has length 420 [2023-12-22 03:38:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:29,002 INFO L495 AbstractCegarLoop]: Abstraction has 76511 states and 81433 transitions. [2023-12-22 03:38:29,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 76511 states and 81433 transitions. [2023-12-22 03:38:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-22 03:38:29,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:29,052 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:29,066 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 03:38:29,255 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 03:38:29,255 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:29,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash 30565433, now seen corresponding path program 1 times [2023-12-22 03:38:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088110790] [2023-12-22 03:38:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:29,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:29,260 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 03:38:29,261 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 03:38:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:29,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:29,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-22 03:38:29,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:29,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088110790] [2023-12-22 03:38:29,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088110790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:29,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:29,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:38:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060305486] [2023-12-22 03:38:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:29,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:29,616 INFO L87 Difference]: Start difference. First operand 76511 states and 81433 transitions. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:31,305 INFO L93 Difference]: Finished difference Result 174344 states and 185990 transitions. [2023-12-22 03:38:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 471 [2023-12-22 03:38:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:31,414 INFO L225 Difference]: With dead ends: 174344 [2023-12-22 03:38:31,414 INFO L226 Difference]: Without dead ends: 98076 [2023-12-22 03:38:31,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:31,454 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 569 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:31,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 249 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 03:38:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98076 states. [2023-12-22 03:38:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98076 to 98050. [2023-12-22 03:38:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98050 states, 98049 states have (on average 1.0681088027414865) internal successors, (104727), 98049 states have internal predecessors, (104727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98050 states to 98050 states and 104727 transitions. [2023-12-22 03:38:32,881 INFO L78 Accepts]: Start accepts. Automaton has 98050 states and 104727 transitions. Word has length 471 [2023-12-22 03:38:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:32,881 INFO L495 AbstractCegarLoop]: Abstraction has 98050 states and 104727 transitions. [2023-12-22 03:38:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 98050 states and 104727 transitions. [2023-12-22 03:38:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-22 03:38:32,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:32,919 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:32,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:33,123 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 03:38:33,123 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:33,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:33,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1288814400, now seen corresponding path program 1 times [2023-12-22 03:38:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:33,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823058048] [2023-12-22 03:38:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:33,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:33,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:33,127 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 03:38:33,128 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 03:38:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:33,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:38:33,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 402 proven. 219 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-22 03:38:35,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:38:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 402 proven. 219 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-22 03:38:37,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:37,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823058048] [2023-12-22 03:38:37,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823058048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:38:37,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:38:37,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-22 03:38:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164364132] [2023-12-22 03:38:37,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:38:37,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:38:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:38:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:38:37,793 INFO L87 Difference]: Start difference. First operand 98050 states and 104727 transitions. Second operand has 10 states, 10 states have (on average 62.3) internal successors, (623), 9 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:43,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:43,108 INFO L93 Difference]: Finished difference Result 214908 states and 229435 transitions. [2023-12-22 03:38:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 03:38:43,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 62.3) internal successors, (623), 9 states have internal predecessors, (623), 0 states have call successors, (0), 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 514 [2023-12-22 03:38:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:43,230 INFO L225 Difference]: With dead ends: 214908 [2023-12-22 03:38:43,230 INFO L226 Difference]: Without dead ends: 115477 [2023-12-22 03:38:43,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1018 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-22 03:38:43,283 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1386 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4804 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 5056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 4804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:43,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 334 Invalid, 5056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 4804 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-22 03:38:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115477 states. [2023-12-22 03:38:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115477 to 111283. [2023-12-22 03:38:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111283 states, 111282 states have (on average 1.068708326593699) internal successors, (118928), 111282 states have internal predecessors, (118928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111283 states to 111283 states and 118928 transitions. [2023-12-22 03:38:44,673 INFO L78 Accepts]: Start accepts. Automaton has 111283 states and 118928 transitions. Word has length 514 [2023-12-22 03:38:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:44,673 INFO L495 AbstractCegarLoop]: Abstraction has 111283 states and 118928 transitions. [2023-12-22 03:38:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.3) internal successors, (623), 9 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 111283 states and 118928 transitions. [2023-12-22 03:38:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-22 03:38:44,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:44,714 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, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:44,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:44,914 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 03:38:44,915 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:44,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:44,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2136225803, now seen corresponding path program 1 times [2023-12-22 03:38:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:44,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123013620] [2023-12-22 03:38:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:44,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:44,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:44,920 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 03:38:44,921 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 03:38:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:45,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:38:45,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-12-22 03:38:45,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:45,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123013620] [2023-12-22 03:38:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123013620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:45,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:45,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210712915] [2023-12-22 03:38:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:45,570 INFO L87 Difference]: Start difference. First operand 111283 states and 118928 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:47,393 INFO L93 Difference]: Finished difference Result 215630 states and 230428 transitions. [2023-12-22 03:38:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 524 [2023-12-22 03:38:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:47,532 INFO L225 Difference]: With dead ends: 215630 [2023-12-22 03:38:47,532 INFO L226 Difference]: Without dead ends: 115988 [2023-12-22 03:38:47,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:47,600 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 246 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 194 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 03:38:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115988 states. [2023-12-22 03:38:49,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115988 to 109259. [2023-12-22 03:38:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109259 states, 109258 states have (on average 1.0687546907320287) internal successors, (116770), 109258 states have internal predecessors, (116770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109259 states to 109259 states and 116770 transitions. [2023-12-22 03:38:50,323 INFO L78 Accepts]: Start accepts. Automaton has 109259 states and 116770 transitions. Word has length 524 [2023-12-22 03:38:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:50,323 INFO L495 AbstractCegarLoop]: Abstraction has 109259 states and 116770 transitions. [2023-12-22 03:38:50,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 109259 states and 116770 transitions. [2023-12-22 03:38:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-22 03:38:50,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:50,362 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:50,365 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 03:38:50,562 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 03:38:50,563 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:50,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:50,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1198088246, now seen corresponding path program 1 times [2023-12-22 03:38:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111363797] [2023-12-22 03:38:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:50,567 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 03:38:50,568 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 03:38:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:50,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:38:50,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-12-22 03:38:50,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:50,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111363797] [2023-12-22 03:38:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111363797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:50,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:38:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283697840] [2023-12-22 03:38:50,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:50,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:38:50,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:50,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:38:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:50,840 INFO L87 Difference]: Start difference. First operand 109259 states and 116770 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:52,372 INFO L93 Difference]: Finished difference Result 200590 states and 214105 transitions. [2023-12-22 03:38:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:38:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 540 [2023-12-22 03:38:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:52,511 INFO L225 Difference]: With dead ends: 200590 [2023-12-22 03:38:52,512 INFO L226 Difference]: Without dead ends: 102972 [2023-12-22 03:38:52,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:38:52,560 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 247 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:52,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 151 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:38:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102972 states. [2023-12-22 03:38:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102972 to 96227. [2023-12-22 03:38:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96227 states, 96226 states have (on average 1.0610541849396213) internal successors, (102101), 96226 states have internal predecessors, (102101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96227 states to 96227 states and 102101 transitions. [2023-12-22 03:38:54,168 INFO L78 Accepts]: Start accepts. Automaton has 96227 states and 102101 transitions. Word has length 540 [2023-12-22 03:38:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:54,169 INFO L495 AbstractCegarLoop]: Abstraction has 96227 states and 102101 transitions. [2023-12-22 03:38:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 96227 states and 102101 transitions. [2023-12-22 03:38:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2023-12-22 03:38:54,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:54,206 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:38:54,209 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 03:38:54,406 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 03:38:54,407 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:54,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1447790125, now seen corresponding path program 1 times [2023-12-22 03:38:54,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:54,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146061918] [2023-12-22 03:38:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:54,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:54,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:54,411 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 03:38:54,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-22 03:38:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:38:54,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:38:54,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:38:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-22 03:38:55,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:38:55,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:38:55,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146061918] [2023-12-22 03:38:55,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146061918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:38:55,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:38:55,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:38:55,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652219927] [2023-12-22 03:38:55,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:38:55,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:38:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:38:55,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:38:55,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:55,082 INFO L87 Difference]: Start difference. First operand 96227 states and 102101 transitions. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:38:56,692 INFO L93 Difference]: Finished difference Result 239618 states and 253744 transitions. [2023-12-22 03:38:56,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:38:56,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 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 560 [2023-12-22 03:38:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:38:56,865 INFO L225 Difference]: With dead ends: 239618 [2023-12-22 03:38:56,865 INFO L226 Difference]: Without dead ends: 154212 [2023-12-22 03:38:57,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:38:57,116 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 511 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:38:57,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 428 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:38:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154212 states. [2023-12-22 03:38:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154212 to 153790. [2023-12-22 03:38:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153790 states, 153789 states have (on average 1.0583071611103525) internal successors, (162756), 153789 states have internal predecessors, (162756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153790 states to 153790 states and 162756 transitions. [2023-12-22 03:38:59,384 INFO L78 Accepts]: Start accepts. Automaton has 153790 states and 162756 transitions. Word has length 560 [2023-12-22 03:38:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:38:59,385 INFO L495 AbstractCegarLoop]: Abstraction has 153790 states and 162756 transitions. [2023-12-22 03:38:59,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:38:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 153790 states and 162756 transitions. [2023-12-22 03:38:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-22 03:38:59,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:38:59,462 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2023-12-22 03:38:59,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-22 03:38:59,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:59,663 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:38:59,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:38:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1047381887, now seen corresponding path program 1 times [2023-12-22 03:38:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:38:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696876466] [2023-12-22 03:38:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:38:59,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:38:59,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:38:59,668 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:38:59,669 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 (25)] Waiting until timeout for monitored process [2023-12-22 03:39:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:00,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 03:39:00,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-22 03:39:01,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:39:01,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696876466] [2023-12-22 03:39:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696876466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:39:01,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:39:01,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:39:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968708965] [2023-12-22 03:39:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:39:01,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:39:01,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:39:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:01,652 INFO L87 Difference]: Start difference. First operand 153790 states and 162756 transitions. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:04,247 INFO L93 Difference]: Finished difference Result 434018 states and 459034 transitions. [2023-12-22 03:39:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:39:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 730 [2023-12-22 03:39:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:04,594 INFO L225 Difference]: With dead ends: 434018 [2023-12-22 03:39:04,595 INFO L226 Difference]: Without dead ends: 291049 [2023-12-22 03:39:04,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:04,660 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 251 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:04,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 232 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:39:05,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291049 states. [2023-12-22 03:39:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291049 to 280481. [2023-12-22 03:39:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280481 states, 280480 states have (on average 1.0586993725042784) internal successors, (296944), 280480 states have internal predecessors, (296944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280481 states to 280481 states and 296944 transitions. [2023-12-22 03:39:09,421 INFO L78 Accepts]: Start accepts. Automaton has 280481 states and 296944 transitions. Word has length 730 [2023-12-22 03:39:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:09,421 INFO L495 AbstractCegarLoop]: Abstraction has 280481 states and 296944 transitions. [2023-12-22 03:39:09,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 280481 states and 296944 transitions. [2023-12-22 03:39:09,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-12-22 03:39:09,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:09,584 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-22 03:39:09,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 03:39:09,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:09,785 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:09,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2122860108, now seen corresponding path program 1 times [2023-12-22 03:39:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252288125] [2023-12-22 03:39:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:09,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:09,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:09,791 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:39:09,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 03:39:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:10,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-22 03:39:10,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 853 proven. 772 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-12-22 03:39:12,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:39:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 846 proven. 779 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-12-22 03:39:15,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:15,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252288125] [2023-12-22 03:39:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252288125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:39:15,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:39:15,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-22 03:39:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867793542] [2023-12-22 03:39:15,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:39:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 03:39:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 03:39:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-22 03:39:15,355 INFO L87 Difference]: Start difference. First operand 280481 states and 296944 transitions. Second operand has 11 states, 11 states have (on average 66.63636363636364) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:23,783 INFO L93 Difference]: Finished difference Result 654974 states and 692693 transitions. [2023-12-22 03:39:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 03:39:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 66.63636363636364) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 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 836 [2023-12-22 03:39:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:24,278 INFO L225 Difference]: With dead ends: 654974 [2023-12-22 03:39:24,279 INFO L226 Difference]: Without dead ends: 378818 [2023-12-22 03:39:24,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1661 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-22 03:39:24,370 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 3256 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 5757 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 6276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 5757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:24,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 318 Invalid, 6276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 5757 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-22 03:39:24,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378818 states. [2023-12-22 03:39:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378818 to 337877. [2023-12-22 03:39:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337877 states, 337876 states have (on average 1.0577756336644213) internal successors, (357397), 337876 states have internal predecessors, (357397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337877 states to 337877 states and 357397 transitions. [2023-12-22 03:39:29,973 INFO L78 Accepts]: Start accepts. Automaton has 337877 states and 357397 transitions. Word has length 836 [2023-12-22 03:39:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:29,974 INFO L495 AbstractCegarLoop]: Abstraction has 337877 states and 357397 transitions. [2023-12-22 03:39:29,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.63636363636364) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 337877 states and 357397 transitions. [2023-12-22 03:39:30,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2023-12-22 03:39:30,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:30,232 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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 03:39:30,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 03:39:30,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:30,433 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:30,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:30,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1982550942, now seen corresponding path program 1 times [2023-12-22 03:39:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045862118] [2023-12-22 03:39:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:39:30,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:30,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:30,440 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:39:30,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-22 03:39:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:39:31,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:39:31,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2023-12-22 03:39:31,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:39:31,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045862118] [2023-12-22 03:39:31,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045862118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:39:31,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:39:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:39:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486601879] [2023-12-22 03:39:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:39:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:39:31,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:39:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:31,298 INFO L87 Difference]: Start difference. First operand 337877 states and 357397 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:33,655 INFO L93 Difference]: Finished difference Result 535805 states and 565934 transitions. [2023-12-22 03:39:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:39:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 862 [2023-12-22 03:39:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:33,910 INFO L225 Difference]: With dead ends: 535805 [2023-12-22 03:39:33,911 INFO L226 Difference]: Without dead ends: 198984 [2023-12-22 03:39:34,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:39:34,295 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 416 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:34,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 56 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:39:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198984 states. [2023-12-22 03:39:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198984 to 114231. [2023-12-22 03:39:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114231 states, 114230 states have (on average 1.0540050774752692) internal successors, (120399), 114230 states have internal predecessors, (120399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114231 states to 114231 states and 120399 transitions. [2023-12-22 03:39:36,728 INFO L78 Accepts]: Start accepts. Automaton has 114231 states and 120399 transitions. Word has length 862 [2023-12-22 03:39:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:39:36,728 INFO L495 AbstractCegarLoop]: Abstraction has 114231 states and 120399 transitions. [2023-12-22 03:39:36,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 114231 states and 120399 transitions. [2023-12-22 03:39:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2023-12-22 03:39:36,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:39:36,846 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2023-12-22 03:39:36,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-22 03:39:37,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:37,047 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:39:37,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:39:37,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1800537158, now seen corresponding path program 2 times [2023-12-22 03:39:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:39:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331788693] [2023-12-22 03:39:37,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 03:39:37,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:39:37,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:39:37,053 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:39:37,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 03:39:37,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 03:39:37,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 03:39:37,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-22 03:39:37,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:39:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 1836 proven. 597 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2023-12-22 03:39:40,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:39:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 1829 proven. 604 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2023-12-22 03:39:42,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:39:42,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331788693] [2023-12-22 03:39:42,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331788693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:39:42,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:39:42,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-22 03:39:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447129519] [2023-12-22 03:39:42,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:39:42,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 03:39:42,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:39:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 03:39:42,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-22 03:39:42,771 INFO L87 Difference]: Start difference. First operand 114231 states and 120399 transitions. Second operand has 11 states, 11 states have (on average 71.9090909090909) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:39:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:39:52,687 INFO L93 Difference]: Finished difference Result 517886 states and 545254 transitions. [2023-12-22 03:39:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-22 03:39:52,688 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 71.9090909090909) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 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 923 [2023-12-22 03:39:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:39:53,260 INFO L225 Difference]: With dead ends: 517886 [2023-12-22 03:39:53,260 INFO L226 Difference]: Without dead ends: 400651 [2023-12-22 03:39:53,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1857 GetRequests, 1835 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2023-12-22 03:39:53,668 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 2490 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 6591 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 6984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 6591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:39:53,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2490 Valid, 404 Invalid, 6984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 6591 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-22 03:39:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400651 states.