/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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 05:30:20,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 05:30:20,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 05:30:20,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 05:30:20,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 05:30:20,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 05:30:20,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 05:30:20,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 05:30:20,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 05:30:20,376 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 05:30:20,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 05:30:20,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 05:30:20,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 05:30:20,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 05:30:20,378 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 05:30:20,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 05:30:20,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 05:30:20,379 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 05:30:20,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 05:30:20,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 05:30:20,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 05:30:20,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 05:30:20,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 05:30:20,381 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 05:30:20,381 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 05:30:20,381 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 05:30:20,382 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 05:30:20,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 05:30:20,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 05:30:20,382 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 05:30:20,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 05:30:20,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 05:30:20,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 05:30:20,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 05:30:20,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:30:20,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 05:30:20,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 05:30:20,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 05:30:20,385 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 05:30:20,385 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 05:30:20,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 05:30:20,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 05:30:20,386 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 05:30:20,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 05:30:20,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 05:30:20,386 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 05:30:20,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 05:30:20,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 05:30:20,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 05:30:20,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 05:30:20,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 05:30:20,658 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 05:30:20,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i [2023-12-23 05:30:21,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 05:30:22,166 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 05:30:22,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i [2023-12-23 05:30:22,179 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c49b1349/771ae0936eeb411f808c5051cbc39e05/FLAG28dda8797 [2023-12-23 05:30:22,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c49b1349/771ae0936eeb411f808c5051cbc39e05 [2023-12-23 05:30:22,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 05:30:22,193 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 05:30:22,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 05:30:22,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 05:30:22,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 05:30:22,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3c7b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22, skipping insertion in model container [2023-12-23 05:30:22,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,238 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 05:30:22,383 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i[916,929] [2023-12-23 05:30:22,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:30:22,599 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 05:30:22,614 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-85.i[916,929] [2023-12-23 05:30:22,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:30:22,773 INFO L206 MainTranslator]: Completed translation [2023-12-23 05:30:22,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22 WrapperNode [2023-12-23 05:30:22,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 05:30:22,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 05:30:22,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 05:30:22,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 05:30:22,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,855 INFO L138 Inliner]: procedures = 27, calls = 113, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 647 [2023-12-23 05:30:22,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 05:30:22,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 05:30:22,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 05:30:22,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 05:30:22,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,922 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]. [2023-12-23 05:30:22,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:22,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:23,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:23,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 05:30:23,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 05:30:23,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 05:30:23,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 05:30:23,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (1/1) ... [2023-12-23 05:30:23,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:30:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 05:30:23,052 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) [2023-12-23 05:30:23,080 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 [2023-12-23 05:30:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 05:30:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 05:30:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 05:30:23,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 05:30:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 05:30:23,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 05:30:23,249 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 05:30:23,251 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 05:31:26,258 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 05:31:26,360 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 05:31:26,360 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 05:31:26,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:31:26 BoogieIcfgContainer [2023-12-23 05:31:26,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 05:31:26,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 05:31:26,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 05:31:26,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 05:31:26,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:30:22" (1/3) ... [2023-12-23 05:31:26,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3668749b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:31:26, skipping insertion in model container [2023-12-23 05:31:26,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:30:22" (2/3) ... [2023-12-23 05:31:26,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3668749b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:31:26, skipping insertion in model container [2023-12-23 05:31:26,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:31:26" (3/3) ... [2023-12-23 05:31:26,368 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-85.i [2023-12-23 05:31:26,387 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 05:31:26,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 05:31:26,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 05:31:26,444 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;@168c6814, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 05:31:26,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 05:31:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 175 states have (on average 1.6285714285714286) internal successors, (285), 176 states have internal predecessors, (285), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-23 05:31:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-23 05:31:26,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:31:26,485 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:31:26,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:31:26,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:31:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash -28575568, now seen corresponding path program 1 times [2023-12-23 05:31:26,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:31:26,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29702619] [2023-12-23 05:31:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:31:26,511 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 [2023-12-23 05:31:26,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:31:26,518 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) [2023-12-23 05:31:26,558 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 [2023-12-23 05:31:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:31:28,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 05:31:28,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:31:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9158 proven. 0 refuted. 0 times theorem prover too weak. 10642 trivial. 0 not checked. [2023-12-23 05:31:28,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:31:28,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:31:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29702619] [2023-12-23 05:31:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29702619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:31:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:31:28,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:31:28,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060304912] [2023-12-23 05:31:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:31:28,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 05:31:28,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:31:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 05:31:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 05:31:28,764 INFO L87 Difference]: Start difference. First operand has 278 states, 175 states have (on average 1.6285714285714286) internal successors, (285), 176 states have internal predecessors, (285), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-23 05:31:30,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:31:30,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:31:30,783 INFO L93 Difference]: Finished difference Result 553 states and 1068 transitions. [2023-12-23 05:31:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 05:31:30,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 629 [2023-12-23 05:31:30,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:31:30,841 INFO L225 Difference]: With dead ends: 553 [2023-12-23 05:31:30,841 INFO L226 Difference]: Without dead ends: 276 [2023-12-23 05:31:30,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 05:31:30,849 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:31:30,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 05:31:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-23 05:31:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-12-23 05:31:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 174 states have (on average 1.6091954022988506) internal successors, (280), 174 states have internal predecessors, (280), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-23 05:31:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 480 transitions. [2023-12-23 05:31:30,954 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 480 transitions. Word has length 629 [2023-12-23 05:31:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:31:30,956 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 480 transitions. [2023-12-23 05:31:30,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-23 05:31:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 480 transitions. [2023-12-23 05:31:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-23 05:31:30,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:31:30,980 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:31:31,043 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 [2023-12-23 05:31:31,208 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 [2023-12-23 05:31:31,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:31:31,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:31:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash 973930528, now seen corresponding path program 1 times [2023-12-23 05:31:31,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:31:31,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125065740] [2023-12-23 05:31:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:31:31,212 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 [2023-12-23 05:31:31,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:31:31,215 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) [2023-12-23 05:31:31,219 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 (3)] Waiting until timeout for monitored process [2023-12-23 05:31:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:31:33,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:31:33,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:31:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:31:33,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:31:33,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:31:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125065740] [2023-12-23 05:31:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125065740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:31:33,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:31:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 05:31:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898883064] [2023-12-23 05:31:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:31:33,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:31:33,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:31:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:31:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:31:33,810 INFO L87 Difference]: Start difference. First operand 276 states and 480 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:31:36,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:31:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:31:36,948 INFO L93 Difference]: Finished difference Result 690 states and 1212 transitions. [2023-12-23 05:31:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:31:36,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 629 [2023-12-23 05:31:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:31:36,954 INFO L225 Difference]: With dead ends: 690 [2023-12-23 05:31:36,954 INFO L226 Difference]: Without dead ends: 415 [2023-12-23 05:31:36,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:31:36,957 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 236 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:31:36,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 972 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-23 05:31:36,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-23 05:31:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 412. [2023-12-23 05:31:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 294 states have (on average 1.6904761904761905) internal successors, (497), 295 states have internal predecessors, (497), 115 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (115), 114 states have call predecessors, (115), 115 states have call successors, (115) [2023-12-23 05:31:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 727 transitions. [2023-12-23 05:31:37,020 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 727 transitions. Word has length 629 [2023-12-23 05:31:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:31:37,026 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 727 transitions. [2023-12-23 05:31:37,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:31:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 727 transitions. [2023-12-23 05:31:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-23 05:31:37,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:31:37,036 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:31:37,091 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 [2023-12-23 05:31:37,248 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 [2023-12-23 05:31:37,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:31:37,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:31:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1277575448, now seen corresponding path program 1 times [2023-12-23 05:31:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:31:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754093776] [2023-12-23 05:31:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:31:37,252 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 [2023-12-23 05:31:37,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:31:37,254 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) [2023-12-23 05:31:37,283 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 [2023-12-23 05:31:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:31:39,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:31:39,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:32:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:32:05,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:32:09,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:32:09,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754093776] [2023-12-23 05:32:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754093776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:32:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1498021098] [2023-12-23 05:32:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:32:09,668 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:32:09,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:32:09,706 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:32:09,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 05:32:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:32:11,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:32:11,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:32:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:32:12,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:32:12,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1498021098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:32:12,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:32:12,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 05:32:12,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809069126] [2023-12-23 05:32:12,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:32:12,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:32:12,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:32:12,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:32:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:32:12,192 INFO L87 Difference]: Start difference. First operand 412 states and 727 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:32:14,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:32:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:32:14,594 INFO L93 Difference]: Finished difference Result 1086 states and 1904 transitions. [2023-12-23 05:32:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:32:14,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 630 [2023-12-23 05:32:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:32:14,602 INFO L225 Difference]: With dead ends: 1086 [2023-12-23 05:32:14,602 INFO L226 Difference]: Without dead ends: 675 [2023-12-23 05:32:14,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1682 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:32:14,605 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 285 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:32:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1011 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-23 05:32:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-12-23 05:32:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 672. [2023-12-23 05:32:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 470 states have (on average 1.651063829787234) internal successors, (776), 473 states have internal predecessors, (776), 197 states have call successors, (197), 4 states have call predecessors, (197), 4 states have return successors, (197), 194 states have call predecessors, (197), 197 states have call successors, (197) [2023-12-23 05:32:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1170 transitions. [2023-12-23 05:32:14,664 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1170 transitions. Word has length 630 [2023-12-23 05:32:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:32:14,668 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1170 transitions. [2023-12-23 05:32:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:32:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1170 transitions. [2023-12-23 05:32:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-23 05:32:14,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:32:14,675 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:32:14,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 05:32:14,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-23 05:32:15,084 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:32:15,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:32:15,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:32:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1691231972, now seen corresponding path program 1 times [2023-12-23 05:32:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:32:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509146868] [2023-12-23 05:32:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:32:15,087 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 [2023-12-23 05:32:15,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:32:15,089 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) [2023-12-23 05:32:15,112 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 [2023-12-23 05:32:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:32:17,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:32:17,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:32:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:32:41,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:32:45,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:32:45,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509146868] [2023-12-23 05:32:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509146868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:32:45,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536148622] [2023-12-23 05:32:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:32:45,772 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:32:45,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:32:45,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:32:45,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 05:32:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:32:47,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:32:47,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:32:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:32:48,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:32:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1536148622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:32:48,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:32:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 05:32:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649017348] [2023-12-23 05:32:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:32:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:32:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:32:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:32:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:32:48,576 INFO L87 Difference]: Start difference. First operand 672 states and 1170 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:32:51,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:32:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:32:51,617 INFO L93 Difference]: Finished difference Result 1350 states and 2344 transitions. [2023-12-23 05:32:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:32:51,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 630 [2023-12-23 05:32:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:32:51,623 INFO L225 Difference]: With dead ends: 1350 [2023-12-23 05:32:51,624 INFO L226 Difference]: Without dead ends: 679 [2023-12-23 05:32:51,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1682 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:32:51,627 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 260 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:32:51,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1109 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-23 05:32:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-23 05:32:51,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 504. [2023-12-23 05:32:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 385 states have (on average 1.7116883116883117) internal successors, (659), 386 states have internal predecessors, (659), 115 states have call successors, (115), 3 states have call predecessors, (115), 3 states have return successors, (115), 114 states have call predecessors, (115), 115 states have call successors, (115) [2023-12-23 05:32:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 889 transitions. [2023-12-23 05:32:51,660 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 889 transitions. Word has length 630 [2023-12-23 05:32:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:32:51,661 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 889 transitions. [2023-12-23 05:32:51,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:32:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 889 transitions. [2023-12-23 05:32:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-23 05:32:51,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:32:51,667 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:32:51,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-23 05:32:51,930 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 [2023-12-23 05:32:52,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 05:32:52,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:32:52,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:32:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2095223898, now seen corresponding path program 1 times [2023-12-23 05:32:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:32:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085377038] [2023-12-23 05:32:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:32:52,080 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 [2023-12-23 05:32:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:32:52,081 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) [2023-12-23 05:32:52,082 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 [2023-12-23 05:32:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:32:54,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:32:54,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:33:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:33:19,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:33:22,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:33:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085377038] [2023-12-23 05:33:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085377038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:33:22,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [576858508] [2023-12-23 05:33:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:33:22,864 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:33:22,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:33:22,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:33:22,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 05:33:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:33:24,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:33:24,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:33:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:33:25,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:33:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [576858508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:33:25,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:33:25,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 05:33:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337452756] [2023-12-23 05:33:25,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:33:25,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:33:25,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:33:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:33:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:33:25,493 INFO L87 Difference]: Start difference. First operand 504 states and 889 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:33:28,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:33:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:33:28,796 INFO L93 Difference]: Finished difference Result 1378 states and 2420 transitions. [2023-12-23 05:33:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:33:28,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 630 [2023-12-23 05:33:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:33:28,803 INFO L225 Difference]: With dead ends: 1378 [2023-12-23 05:33:28,804 INFO L226 Difference]: Without dead ends: 875 [2023-12-23 05:33:28,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1682 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:33:28,808 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 297 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:33:28,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 935 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-23 05:33:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-23 05:33:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 872. [2023-12-23 05:33:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 664 states have (on average 1.680722891566265) internal successors, (1116), 667 states have internal predecessors, (1116), 201 states have call successors, (201), 6 states have call predecessors, (201), 6 states have return successors, (201), 198 states have call predecessors, (201), 201 states have call successors, (201) [2023-12-23 05:33:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1518 transitions. [2023-12-23 05:33:28,854 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1518 transitions. Word has length 630 [2023-12-23 05:33:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:33:28,855 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1518 transitions. [2023-12-23 05:33:28,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:33:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1518 transitions. [2023-12-23 05:33:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-23 05:33:28,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:33:28,861 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:33:28,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 05:33:29,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 05:33:29,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 05:33:29,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:33:29,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:33:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1487268710, now seen corresponding path program 1 times [2023-12-23 05:33:29,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:33:29,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830853816] [2023-12-23 05:33:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:33:29,277 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 [2023-12-23 05:33:29,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:33:29,278 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) [2023-12-23 05:33:29,280 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 [2023-12-23 05:33:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:33:31,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:33:31,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:33:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:33:55,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:33:59,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:33:59,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830853816] [2023-12-23 05:33:59,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830853816] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:33:59,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1183380228] [2023-12-23 05:33:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:33:59,582 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:33:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:33:59,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:33:59,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 05:34:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:34:01,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:34:01,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:34:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:34:01,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:34:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1183380228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:34:01,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:34:01,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 05:34:01,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393331011] [2023-12-23 05:34:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:34:01,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:34:01,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:34:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:34:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:34:01,543 INFO L87 Difference]: Start difference. First operand 872 states and 1518 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:34:04,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:34:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:34:04,643 INFO L93 Difference]: Finished difference Result 2381 states and 4110 transitions. [2023-12-23 05:34:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:34:04,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 630 [2023-12-23 05:34:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:34:04,652 INFO L225 Difference]: With dead ends: 2381 [2023-12-23 05:34:04,652 INFO L226 Difference]: Without dead ends: 1510 [2023-12-23 05:34:04,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1682 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:34:04,655 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 314 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:34:04,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1236 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-23 05:34:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-12-23 05:34:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1506. [2023-12-23 05:34:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1124 states have (on average 1.6281138790035588) internal successors, (1830), 1131 states have internal predecessors, (1830), 369 states have call successors, (369), 12 states have call predecessors, (369), 12 states have return successors, (369), 362 states have call predecessors, (369), 369 states have call successors, (369) [2023-12-23 05:34:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2568 transitions. [2023-12-23 05:34:04,747 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2568 transitions. Word has length 630 [2023-12-23 05:34:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:34:04,748 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2568 transitions. [2023-12-23 05:34:04,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:34:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2568 transitions. [2023-12-23 05:34:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-23 05:34:04,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:34:04,754 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:34:04,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-23 05:34:05,040 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 [2023-12-23 05:34:05,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 05:34:05,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:34:05,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:34:05,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1786630232, now seen corresponding path program 1 times [2023-12-23 05:34:05,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:34:05,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086350509] [2023-12-23 05:34:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:34:05,178 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 [2023-12-23 05:34:05,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:34:05,179 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) [2023-12-23 05:34:05,180 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 [2023-12-23 05:34:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:34:07,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:34:07,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:34:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:34:31,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:34:34,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:34:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086350509] [2023-12-23 05:34:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086350509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:34:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [148463224] [2023-12-23 05:34:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:34:34,866 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:34:34,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:34:34,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:34:34,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-23 05:34:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:34:36,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:34:36,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:34:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:34:37,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:34:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [148463224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:34:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:34:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-23 05:34:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206302453] [2023-12-23 05:34:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:34:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:34:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:34:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:34:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:34:37,143 INFO L87 Difference]: Start difference. First operand 1506 states and 2568 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:34:38,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:34:41,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:34:44,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:34:44,656 INFO L93 Difference]: Finished difference Result 4500 states and 7678 transitions. [2023-12-23 05:34:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 05:34:44,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 630 [2023-12-23 05:34:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:34:44,672 INFO L225 Difference]: With dead ends: 4500 [2023-12-23 05:34:44,673 INFO L226 Difference]: Without dead ends: 2995 [2023-12-23 05:34:44,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1690 GetRequests, 1681 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:34:44,679 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 491 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-23 05:34:44,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 2124 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-23 05:34:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2023-12-23 05:34:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1522. [2023-12-23 05:34:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1140 states have (on average 1.619298245614035) internal successors, (1846), 1147 states have internal predecessors, (1846), 369 states have call successors, (369), 12 states have call predecessors, (369), 12 states have return successors, (369), 362 states have call predecessors, (369), 369 states have call successors, (369) [2023-12-23 05:34:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2584 transitions. [2023-12-23 05:34:44,797 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2584 transitions. Word has length 630 [2023-12-23 05:34:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:34:44,798 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2584 transitions. [2023-12-23 05:34:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:34:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2584 transitions. [2023-12-23 05:34:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-23 05:34:44,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:34:44,804 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:34:44,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-23 05:34:45,065 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 (12)] Ended with exit code 0 [2023-12-23 05:34:45,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 05:34:45,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:34:45,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:34:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1843888534, now seen corresponding path program 1 times [2023-12-23 05:34:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:34:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885698474] [2023-12-23 05:34:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:34:45,218 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 [2023-12-23 05:34:45,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:34:45,219 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) [2023-12-23 05:34:45,220 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 [2023-12-23 05:34:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:34:47,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:34:47,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:35:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:35:11,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:35:15,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:35:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885698474] [2023-12-23 05:35:15,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885698474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:35:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [716712362] [2023-12-23 05:35:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:35:15,216 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:35:15,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:35:15,218 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:35:15,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-23 05:35:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:35:19,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:35:19,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:35:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:35:34,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:35:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [716712362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:35:34,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:35:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 05:35:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595756290] [2023-12-23 05:35:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:35:34,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:35:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:35:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:35:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:35:34,768 INFO L87 Difference]: Start difference. First operand 1522 states and 2584 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:35:41,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:35:45,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:35:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:35:46,680 INFO L93 Difference]: Finished difference Result 5769 states and 9813 transitions. [2023-12-23 05:35:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:35:46,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 630 [2023-12-23 05:35:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:35:46,701 INFO L225 Difference]: With dead ends: 5769 [2023-12-23 05:35:46,701 INFO L226 Difference]: Without dead ends: 4248 [2023-12-23 05:35:46,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1682 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:35:46,708 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 501 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-23 05:35:46,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1328 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2023-12-23 05:35:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2023-12-23 05:35:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 4240. [2023-12-23 05:35:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4240 states, 3269 states have (on average 1.634138880391557) internal successors, (5342), 3291 states have internal predecessors, (5342), 938 states have call successors, (938), 32 states have call predecessors, (938), 32 states have return successors, (938), 916 states have call predecessors, (938), 938 states have call successors, (938) [2023-12-23 05:35:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 7218 transitions. [2023-12-23 05:35:47,000 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 7218 transitions. Word has length 630 [2023-12-23 05:35:47,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:35:47,001 INFO L495 AbstractCegarLoop]: Abstraction has 4240 states and 7218 transitions. [2023-12-23 05:35:47,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:35:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 7218 transitions. [2023-12-23 05:35:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:35:47,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:35:47,010 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:35:47,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-23 05:35:47,303 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 [2023-12-23 05:35:47,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 05:35:47,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:35:47,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:35:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1477903311, now seen corresponding path program 1 times [2023-12-23 05:35:47,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:35:47,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213947323] [2023-12-23 05:35:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:35:47,439 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 [2023-12-23 05:35:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:35:47,440 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) [2023-12-23 05:35:47,443 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 (16)] Waiting until timeout for monitored process [2023-12-23 05:35:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:35:49,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:35:49,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:36:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:36:13,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:36:17,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:36:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213947323] [2023-12-23 05:36:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213947323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:36:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1550682899] [2023-12-23 05:36:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:36:17,345 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:36:17,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:36:17,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:36:17,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-23 05:36:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:36:22,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:36:22,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:36:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:36:36,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:36:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1550682899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:36:36,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:36:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-23 05:36:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724305942] [2023-12-23 05:36:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:36:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:36:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:36:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:36:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:36:36,708 INFO L87 Difference]: Start difference. First operand 4240 states and 7218 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:36:38,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:36:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:36:38,689 INFO L93 Difference]: Finished difference Result 12718 states and 21652 transitions. [2023-12-23 05:36:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:36:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 631 [2023-12-23 05:36:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:36:38,733 INFO L225 Difference]: With dead ends: 12718 [2023-12-23 05:36:38,734 INFO L226 Difference]: Without dead ends: 8479 [2023-12-23 05:36:38,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1692 GetRequests, 1685 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:36:38,752 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 192 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 05:36:38,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1070 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 05:36:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8479 states. [2023-12-23 05:36:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8479 to 8477. [2023-12-23 05:36:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8477 states, 6536 states have (on average 1.631578947368421) internal successors, (10664), 6580 states have internal predecessors, (10664), 1876 states have call successors, (1876), 64 states have call predecessors, (1876), 64 states have return successors, (1876), 1832 states have call predecessors, (1876), 1876 states have call successors, (1876) [2023-12-23 05:36:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 14416 transitions. [2023-12-23 05:36:39,369 INFO L78 Accepts]: Start accepts. Automaton has 8477 states and 14416 transitions. Word has length 631 [2023-12-23 05:36:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:36:39,370 INFO L495 AbstractCegarLoop]: Abstraction has 8477 states and 14416 transitions. [2023-12-23 05:36:39,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:36:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8477 states and 14416 transitions. [2023-12-23 05:36:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:36:39,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:36:39,386 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:36:39,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-23 05:36:39,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-23 05:36:39,804 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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:36:39,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:36:39,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:36:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1462384593, now seen corresponding path program 1 times [2023-12-23 05:36:39,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:36:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529479462] [2023-12-23 05:36:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:36:39,807 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 [2023-12-23 05:36:39,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:36:39,807 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) [2023-12-23 05:36:39,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-23 05:36:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:36:41,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:36:41,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:37:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:37:05,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:37:09,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:37:09,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529479462] [2023-12-23 05:37:09,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529479462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:37:09,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1637792004] [2023-12-23 05:37:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:37:09,879 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:37:09,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:37:09,880 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:37:09,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-23 05:37:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:37:14,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:37:14,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:37:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19800 trivial. 0 not checked. [2023-12-23 05:37:30,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:37:30,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1637792004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:37:30,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:37:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-23 05:37:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495063359] [2023-12-23 05:37:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:37:30,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:37:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:37:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:37:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:37:30,429 INFO L87 Difference]: Start difference. First operand 8477 states and 14416 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:37:42,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:37:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:37:42,677 INFO L93 Difference]: Finished difference Result 16953 states and 28831 transitions. [2023-12-23 05:37:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:37:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 631 [2023-12-23 05:37:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:37:42,766 INFO L225 Difference]: With dead ends: 16953 [2023-12-23 05:37:42,766 INFO L226 Difference]: Without dead ends: 8477 [2023-12-23 05:37:42,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1694 GetRequests, 1683 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:37:42,786 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 434 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:37:42,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 726 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-12-23 05:37:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8477 states. [2023-12-23 05:37:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8477 to 8477. [2023-12-23 05:37:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8477 states, 6536 states have (on average 1.624235006119951) internal successors, (10616), 6580 states have internal predecessors, (10616), 1876 states have call successors, (1876), 64 states have call predecessors, (1876), 64 states have return successors, (1876), 1832 states have call predecessors, (1876), 1876 states have call successors, (1876) [2023-12-23 05:37:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 14368 transitions. [2023-12-23 05:37:43,488 INFO L78 Accepts]: Start accepts. Automaton has 8477 states and 14368 transitions. Word has length 631 [2023-12-23 05:37:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:37:43,489 INFO L495 AbstractCegarLoop]: Abstraction has 8477 states and 14368 transitions. [2023-12-23 05:37:43,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2023-12-23 05:37:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 8477 states and 14368 transitions. [2023-12-23 05:37:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 05:37:43,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:37:43,504 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:37:43,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-23 05:37:43,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-23 05:37:43,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 05:37:43,926 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:37:43,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:37:43,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1771865410, now seen corresponding path program 1 times [2023-12-23 05:37:43,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:37:43,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641030685] [2023-12-23 05:37:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:37:43,927 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 [2023-12-23 05:37:43,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:37:43,928 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) [2023-12-23 05:37:43,930 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 [2023-12-23 05:37:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:37:45,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:37:45,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:38:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:38:10,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:38:14,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:38:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641030685] [2023-12-23 05:38:14,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641030685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:38:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1538398062] [2023-12-23 05:38:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:38:14,965 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:38:14,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:38:14,966 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:38:14,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-23 05:38:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:38:22,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 05:38:22,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:38:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9129 proven. 192 refuted. 0 times theorem prover too weak. 10479 trivial. 0 not checked. [2023-12-23 05:38:47,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:38:50,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1538398062] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:38:50,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:38:50,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 05:38:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278062389] [2023-12-23 05:38:50,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:38:50,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 05:38:50,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:38:50,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 05:38:50,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:38:50,848 INFO L87 Difference]: Start difference. First operand 8477 states and 14368 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (100), 2 states have call predecessors, (100), 3 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-23 05:39:04,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:39:08,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:39:12,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:39:16,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:39:22,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:39:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:39:23,457 INFO L93 Difference]: Finished difference Result 17067 states and 28840 transitions. [2023-12-23 05:39:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:39:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (100), 2 states have call predecessors, (100), 3 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 632 [2023-12-23 05:39:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:39:23,493 INFO L225 Difference]: With dead ends: 17067 [2023-12-23 05:39:23,493 INFO L226 Difference]: Without dead ends: 8591 [2023-12-23 05:39:23,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2132 GetRequests, 2122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-23 05:39:23,517 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 253 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 37 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:39:23,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 2168 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 608 Invalid, 4 Unknown, 0 Unchecked, 31.6s Time] [2023-12-23 05:39:23,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2023-12-23 05:39:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8509. [2023-12-23 05:39:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 6560 states have (on average 1.6201219512195122) internal successors, (10628), 6604 states have internal predecessors, (10628), 1876 states have call successors, (1876), 72 states have call predecessors, (1876), 72 states have return successors, (1876), 1832 states have call predecessors, (1876), 1876 states have call successors, (1876) [2023-12-23 05:39:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 14380 transitions. [2023-12-23 05:39:24,292 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 14380 transitions. Word has length 632 [2023-12-23 05:39:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:39:24,293 INFO L495 AbstractCegarLoop]: Abstraction has 8509 states and 14380 transitions. [2023-12-23 05:39:24,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (100), 2 states have call predecessors, (100), 3 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-23 05:39:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 14380 transitions. [2023-12-23 05:39:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 05:39:24,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:39:24,308 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:39:24,390 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 [2023-12-23 05:39:24,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-23 05:39:24,724 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=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:39:24,725 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:39:24,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:39:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1224899141, now seen corresponding path program 1 times [2023-12-23 05:39:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:39:24,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529163256] [2023-12-23 05:39:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:39:24,726 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 [2023-12-23 05:39:24,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:39:24,727 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) [2023-12-23 05:39:24,731 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 [2023-12-23 05:39:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:39:26,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:39:26,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:39:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 8818 proven. 177 refuted. 0 times theorem prover too weak. 10805 trivial. 0 not checked. [2023-12-23 05:39:39,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:39:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 411 proven. 180 refuted. 0 times theorem prover too weak. 19209 trivial. 0 not checked. [2023-12-23 05:39:45,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:39:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529163256] [2023-12-23 05:39:45,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529163256] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:39:45,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:39:45,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-23 05:39:45,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80554819] [2023-12-23 05:39:45,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:39:46,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 05:39:46,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:39:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 05:39:46,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:39:46,001 INFO L87 Difference]: Start difference. First operand 8509 states and 14380 transitions. Second operand has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 3 states have call successors, (131), 3 states have call predecessors, (131), 7 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) [2023-12-23 05:40:03,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:40:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:07,680 INFO L93 Difference]: Finished difference Result 15793 states and 26394 transitions. [2023-12-23 05:40:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-23 05:40:07,685 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 3 states have call successors, (131), 3 states have call predecessors, (131), 7 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) Word has length 632 [2023-12-23 05:40:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:07,712 INFO L225 Difference]: With dead ends: 15793 [2023-12-23 05:40:07,713 INFO L226 Difference]: Without dead ends: 7285 [2023-12-23 05:40:07,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1252 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-12-23 05:40:07,730 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 781 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:07,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1699 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2023-12-23 05:40:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2023-12-23 05:40:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 5067. [2023-12-23 05:40:08,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 3894 states have (on average 1.6163328197226503) internal successors, (6294), 3910 states have internal predecessors, (6294), 1120 states have call successors, (1120), 52 states have call predecessors, (1120), 52 states have return successors, (1120), 1104 states have call predecessors, (1120), 1120 states have call successors, (1120) [2023-12-23 05:40:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 8534 transitions. [2023-12-23 05:40:08,358 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 8534 transitions. Word has length 632 [2023-12-23 05:40:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:08,358 INFO L495 AbstractCegarLoop]: Abstraction has 5067 states and 8534 transitions. [2023-12-23 05:40:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.76923076923077) internal successors, (153), 13 states have internal predecessors, (153), 3 states have call successors, (131), 3 states have call predecessors, (131), 7 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) [2023-12-23 05:40:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 8534 transitions. [2023-12-23 05:40:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 05:40:08,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:08,366 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:40:08,443 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 [2023-12-23 05:40:08,592 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 [2023-12-23 05:40:08,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:08,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1537517255, now seen corresponding path program 1 times [2023-12-23 05:40:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:08,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325091912] [2023-12-23 05:40:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:08,595 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 [2023-12-23 05:40:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:08,597 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) [2023-12-23 05:40:08,632 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 [2023-12-23 05:40:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:10,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 05:40:10,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 8962 proven. 252 refuted. 0 times theorem prover too weak. 10586 trivial. 0 not checked. [2023-12-23 05:40:29,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 621 proven. 261 refuted. 0 times theorem prover too weak. 18918 trivial. 0 not checked. [2023-12-23 05:40:40,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:40,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325091912] [2023-12-23 05:40:40,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325091912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:40:40,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:40:40,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-23 05:40:40,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020368904] [2023-12-23 05:40:40,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:40:40,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-23 05:40:40,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-23 05:40:40,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-23 05:40:40,725 INFO L87 Difference]: Start difference. First operand 5067 states and 8534 transitions. Second operand has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 4 states have call successors, (131), 4 states have call predecessors, (131), 10 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-23 05:41:04,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:41:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:41:04,837 INFO L93 Difference]: Finished difference Result 9881 states and 16531 transitions. [2023-12-23 05:41:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-23 05:41:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 4 states have call successors, (131), 4 states have call predecessors, (131), 10 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) Word has length 632 [2023-12-23 05:41:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:41:04,906 INFO L225 Difference]: With dead ends: 9881 [2023-12-23 05:41:04,906 INFO L226 Difference]: Without dead ends: 4815 [2023-12-23 05:41:04,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1283 GetRequests, 1248 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=394, Invalid=866, Unknown=0, NotChecked=0, Total=1260 [2023-12-23 05:41:04,918 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1064 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:41:04,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1513 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2023-12-23 05:41:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2023-12-23 05:41:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 4163. [2023-12-23 05:41:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 2982 states have (on average 1.5301810865191148) internal successors, (4563), 2998 states have internal predecessors, (4563), 1120 states have call successors, (1120), 60 states have call predecessors, (1120), 60 states have return successors, (1120), 1104 states have call predecessors, (1120), 1120 states have call successors, (1120) [2023-12-23 05:41:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 6803 transitions. [2023-12-23 05:41:05,484 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 6803 transitions. Word has length 632 [2023-12-23 05:41:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:41:05,485 INFO L495 AbstractCegarLoop]: Abstraction has 4163 states and 6803 transitions. [2023-12-23 05:41:05,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 4 states have call successors, (131), 4 states have call predecessors, (131), 10 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-23 05:41:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 6803 transitions. [2023-12-23 05:41:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 05:41:05,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:41:05,491 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:41:05,569 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 [2023-12-23 05:41:05,705 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 [2023-12-23 05:41:05,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:41:05,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:41:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash 433678795, now seen corresponding path program 1 times [2023-12-23 05:41:05,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:41:05,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398492517] [2023-12-23 05:41:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:05,707 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 [2023-12-23 05:41:05,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:41:05,708 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) [2023-12-23 05:41:05,714 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 [2023-12-23 05:41:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:07,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-23 05:41:07,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 05:44:18,125 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 05:44:18,140 WARN L340 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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 05:44:18,171 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 05:44:18,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-23 05:44:18,388 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 [2023-12-23 05:44:18,388 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 633 with TraceHistMax 100,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-1 context. [2023-12-23 05:44:18,392 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:44:18,394 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 05:44:18,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:44:18 BoogieIcfgContainer [2023-12-23 05:44:18,396 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 05:44:18,396 INFO L158 Benchmark]: Toolchain (without parser) took 836203.07ms. Allocated memory is still 364.9MB. Free memory was 309.4MB in the beginning and 215.9MB in the end (delta: 93.5MB). Peak memory consumption was 270.9MB. Max. memory is 8.0GB. [2023-12-23 05:44:18,397 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 200.3MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 05:44:18,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.24ms. Allocated memory is still 364.9MB. Free memory was 308.9MB in the beginning and 278.0MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-23 05:44:18,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.73ms. Allocated memory is still 364.9MB. Free memory was 278.0MB in the beginning and 271.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-23 05:44:18,397 INFO L158 Benchmark]: Boogie Preprocessor took 156.19ms. Allocated memory is still 364.9MB. Free memory was 271.7MB in the beginning and 262.8MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-23 05:44:18,398 INFO L158 Benchmark]: RCFGBuilder took 63347.42ms. Allocated memory is still 364.9MB. Free memory was 262.8MB in the beginning and 314.1MB in the end (delta: -51.3MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. [2023-12-23 05:44:18,398 INFO L158 Benchmark]: TraceAbstraction took 772033.56ms. Allocated memory is still 364.9MB. Free memory was 313.0MB in the beginning and 215.9MB in the end (delta: 97.1MB). Peak memory consumption was 273.5MB. Max. memory is 8.0GB. [2023-12-23 05:44:18,399 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 200.3MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 579.24ms. Allocated memory is still 364.9MB. Free memory was 308.9MB in the beginning and 278.0MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 80.73ms. Allocated memory is still 364.9MB. Free memory was 278.0MB in the beginning and 271.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 156.19ms. Allocated memory is still 364.9MB. Free memory was 271.7MB in the beginning and 262.8MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 63347.42ms. Allocated memory is still 364.9MB. Free memory was 262.8MB in the beginning and 314.1MB in the end (delta: -51.3MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. * TraceAbstraction took 772033.56ms. Allocated memory is still 364.9MB. Free memory was 313.0MB in the beginning and 215.9MB in the end (delta: 97.1MB). Peak memory consumption was 273.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 633 with TraceHistMax 100,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-7-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 278 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 772.0s, OverallIterations: 14, TraceHistogramMax: 100, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 129.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 5212 SdHoareTripleChecker+Valid, 118.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5108 mSDsluCounter, 16368 SdHoareTripleChecker+Invalid, 114.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9157 mSDsCounter, 1500 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3689 IncrementalHoareTripleChecker+Invalid, 5194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1500 mSolverCounterUnsat, 7211 mSDtfsCounter, 3689 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19476 GetRequests, 19336 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8509occurred in iteration=11, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 4623 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 51.1s SatisfiabilityAnalysisTime, 386.6s InterpolantComputationTime, 13870 NumberOfCodeBlocks, 13870 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 15110 ConstructedInterpolants, 1 QuantifiedInterpolants, 68368 SizeOfPredicates, 55 NumberOfNonLiveVariables, 22682 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 472410/475200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown