/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-100_file-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:43:29,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:43:29,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 10:43:29,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:43:29,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:43:29,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:43:29,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:43:29,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:43:29,271 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:43:29,276 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:43:29,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:43:29,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:43:29,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:43:29,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:43:29,278 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:43:29,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:43:29,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:43:29,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:43:29,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:43:29,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:43:29,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:43:29,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:43:29,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:43:29,280 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:43:29,280 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:43:29,281 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:43:29,281 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:43:29,281 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:43:29,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:43:29,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:43:29,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:43:29,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:43:29,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:43:29,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:43:29,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:43:29,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:43:29,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:43:29,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:43:29,283 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:43:29,283 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:43:29,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:43:29,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:43:29,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:43:29,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:43:29,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:43:29,301 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:43:29,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:43:29,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:43:29,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:43:29,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:43:29,563 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:43:29,563 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:43:29,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2023-12-16 10:43:30,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:43:30,848 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:43:30,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2023-12-16 10:43:30,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965de5a5d/d3494d84a4984500b8214f6422c313e4/FLAG6d84e459c [2023-12-16 10:43:30,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965de5a5d/d3494d84a4984500b8214f6422c313e4 [2023-12-16 10:43:30,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:43:30,881 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:43:30,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:43:30,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:43:30,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:43:30,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:43:30" (1/1) ... [2023-12-16 10:43:30,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b165666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:30, skipping insertion in model container [2023-12-16 10:43:30,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:43:30" (1/1) ... [2023-12-16 10:43:30,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:43:31,073 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-100_file-10.i[916,929] [2023-12-16 10:43:31,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:43:31,165 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:43:31,174 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-100_file-10.i[916,929] [2023-12-16 10:43:31,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:43:31,246 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:43:31,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31 WrapperNode [2023-12-16 10:43:31,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:43:31,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:43:31,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:43:31,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:43:31,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,302 INFO L138 Inliner]: procedures = 27, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 286 [2023-12-16 10:43:31,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:43:31,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:43:31,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:43:31,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:43:31,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,327 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]. [2023-12-16 10:43:31,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:43:31,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:43:31,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:43:31,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:43:31,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (1/1) ... [2023-12-16 10:43:31,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:43:31,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:43:31,383 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) [2023-12-16 10:43:31,397 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 [2023-12-16 10:43:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:43:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:43:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:43:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:43:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:43:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:43:31,478 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:43:31,479 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:43:32,290 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:43:32,322 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:43:32,323 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:43:32,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:43:32 BoogieIcfgContainer [2023-12-16 10:43:32,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:43:32,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:43:32,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:43:32,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:43:32,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:43:30" (1/3) ... [2023-12-16 10:43:32,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5d6649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:43:32, skipping insertion in model container [2023-12-16 10:43:32,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:31" (2/3) ... [2023-12-16 10:43:32,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5d6649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:43:32, skipping insertion in model container [2023-12-16 10:43:32,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:43:32" (3/3) ... [2023-12-16 10:43:32,329 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2023-12-16 10:43:32,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:43:32,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:43:32,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:43:32,395 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;@2c726dc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:43:32,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:43:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 75 states have internal predecessors, (110), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-16 10:43:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-16 10:43:32,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:32,428 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:32,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:32,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1524004284, now seen corresponding path program 1 times [2023-12-16 10:43:32,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:32,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643295763] [2023-12-16 10:43:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:32,447 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 [2023-12-16 10:43:32,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:32,476 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) [2023-12-16 10:43:32,492 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 [2023-12-16 10:43:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:32,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:43:32,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 4240 trivial. 0 not checked. [2023-12-16 10:43:32,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:32,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643295763] [2023-12-16 10:43:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643295763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:32,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:43:32,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631912179] [2023-12-16 10:43:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:43:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:43:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:43:33,037 INFO L87 Difference]: Start difference. First operand has 126 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 75 states have internal predecessors, (110), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-16 10:43:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:33,092 INFO L93 Difference]: Finished difference Result 249 states and 463 transitions. [2023-12-16 10:43:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:43:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 301 [2023-12-16 10:43:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:33,108 INFO L225 Difference]: With dead ends: 249 [2023-12-16 10:43:33,108 INFO L226 Difference]: Without dead ends: 124 [2023-12-16 10:43:33,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:43:33,118 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:33,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 10:43:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-16 10:43:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-16 10:43:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-16 10:43:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 203 transitions. [2023-12-16 10:43:33,156 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 203 transitions. Word has length 301 [2023-12-16 10:43:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:33,157 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 203 transitions. [2023-12-16 10:43:33,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-16 10:43:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 203 transitions. [2023-12-16 10:43:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-16 10:43:33,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:33,161 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:33,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 10:43:33,372 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 [2023-12-16 10:43:33,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:33,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:33,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1953665354, now seen corresponding path program 1 times [2023-12-16 10:43:33,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:33,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767410578] [2023-12-16 10:43:33,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:33,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:43:33,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:33,377 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) [2023-12-16 10:43:33,378 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 [2023-12-16 10:43:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:33,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 10:43:33,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-16 10:43:33,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:33,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:33,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767410578] [2023-12-16 10:43:33,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767410578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:33,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:33,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:43:33,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486108208] [2023-12-16 10:43:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 10:43:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 10:43:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:43:33,680 INFO L87 Difference]: Start difference. First operand 124 states and 203 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-12-16 10:43:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:33,874 INFO L93 Difference]: Finished difference Result 328 states and 536 transitions. [2023-12-16 10:43:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 10:43:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 301 [2023-12-16 10:43:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:33,883 INFO L225 Difference]: With dead ends: 328 [2023-12-16 10:43:33,883 INFO L226 Difference]: Without dead ends: 205 [2023-12-16 10:43:33,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:43:33,885 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 129 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:33,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 439 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 10:43:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-16 10:43:33,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2023-12-16 10:43:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 125 states have internal predecessors, (181), 75 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-16 10:43:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 331 transitions. [2023-12-16 10:43:33,919 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 331 transitions. Word has length 301 [2023-12-16 10:43:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:33,920 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 331 transitions. [2023-12-16 10:43:33,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-12-16 10:43:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 331 transitions. [2023-12-16 10:43:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-16 10:43:33,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:33,927 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:33,942 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 (3)] Ended with exit code 0 [2023-12-16 10:43:34,135 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 [2023-12-16 10:43:34,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:34,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1947130250, now seen corresponding path program 1 times [2023-12-16 10:43:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:34,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362301918] [2023-12-16 10:43:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:34,138 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 [2023-12-16 10:43:34,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:34,140 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) [2023-12-16 10:43:34,169 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 [2023-12-16 10:43:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:34,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 10:43:34,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-16 10:43:34,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:34,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:34,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362301918] [2023-12-16 10:43:34,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362301918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:34,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:43:34,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147466848] [2023-12-16 10:43:34,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:34,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 10:43:34,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 10:43:34,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:43:34,744 INFO L87 Difference]: Start difference. First operand 202 states and 331 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-12-16 10:43:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:34,832 INFO L93 Difference]: Finished difference Result 604 states and 991 transitions. [2023-12-16 10:43:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 10:43:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 301 [2023-12-16 10:43:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:34,851 INFO L225 Difference]: With dead ends: 604 [2023-12-16 10:43:34,851 INFO L226 Difference]: Without dead ends: 403 [2023-12-16 10:43:34,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:43:34,855 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 61 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:34,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 388 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 10:43:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-12-16 10:43:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2023-12-16 10:43:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 244 states have (on average 1.4508196721311475) internal successors, (354), 246 states have internal predecessors, (354), 150 states have call successors, (150), 4 states have call predecessors, (150), 4 states have return successors, (150), 148 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-16 10:43:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 654 transitions. [2023-12-16 10:43:34,914 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 654 transitions. Word has length 301 [2023-12-16 10:43:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:34,914 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 654 transitions. [2023-12-16 10:43:34,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-12-16 10:43:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 654 transitions. [2023-12-16 10:43:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-16 10:43:34,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:34,917 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:34,941 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 [2023-12-16 10:43:35,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:43:35,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:35,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:35,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1155153316, now seen corresponding path program 1 times [2023-12-16 10:43:35,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:35,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896891480] [2023-12-16 10:43:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:35,128 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 [2023-12-16 10:43:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:35,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:43:35,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 10:43:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:35,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 10:43:35,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 1750 proven. 33 refuted. 0 times theorem prover too weak. 2921 trivial. 0 not checked. [2023-12-16 10:43:35,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:43:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 111 proven. 33 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2023-12-16 10:43:35,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:35,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896891480] [2023-12-16 10:43:35,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896891480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:43:35,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:43:35,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 10:43:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636028698] [2023-12-16 10:43:35,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:43:35,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 10:43:35,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 10:43:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 10:43:35,645 INFO L87 Difference]: Start difference. First operand 399 states and 654 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-16 10:43:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:36,387 INFO L93 Difference]: Finished difference Result 880 states and 1424 transitions. [2023-12-16 10:43:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 10:43:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 302 [2023-12-16 10:43:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:36,390 INFO L225 Difference]: With dead ends: 880 [2023-12-16 10:43:36,391 INFO L226 Difference]: Without dead ends: 482 [2023-12-16 10:43:36,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 596 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 10:43:36,393 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 206 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:36,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 489 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 10:43:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-16 10:43:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 469. [2023-12-16 10:43:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 274 states have (on average 1.3868613138686132) internal successors, (380), 277 states have internal predecessors, (380), 187 states have call successors, (187), 7 states have call predecessors, (187), 7 states have return successors, (187), 184 states have call predecessors, (187), 187 states have call successors, (187) [2023-12-16 10:43:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 754 transitions. [2023-12-16 10:43:36,437 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 754 transitions. Word has length 302 [2023-12-16 10:43:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:36,438 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 754 transitions. [2023-12-16 10:43:36,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-16 10:43:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 754 transitions. [2023-12-16 10:43:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-16 10:43:36,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:36,470 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:36,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 10:43:36,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:43:36,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:36,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash 663329441, now seen corresponding path program 1 times [2023-12-16 10:43:36,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741582484] [2023-12-16 10:43:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:36,683 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 [2023-12-16 10:43:36,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:36,697 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) [2023-12-16 10:43:36,723 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 [2023-12-16 10:43:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:36,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 10:43:36,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-16 10:43:37,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:37,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741582484] [2023-12-16 10:43:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741582484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:37,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:43:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355843240] [2023-12-16 10:43:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:37,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 10:43:37,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 10:43:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 10:43:37,323 INFO L87 Difference]: Start difference. First operand 469 states and 754 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-12-16 10:43:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:37,603 INFO L93 Difference]: Finished difference Result 1389 states and 2226 transitions. [2023-12-16 10:43:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 10:43:37,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 303 [2023-12-16 10:43:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:37,609 INFO L225 Difference]: With dead ends: 1389 [2023-12-16 10:43:37,610 INFO L226 Difference]: Without dead ends: 983 [2023-12-16 10:43:37,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:43:37,612 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 192 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:37,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 585 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 10:43:37,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-12-16 10:43:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 861. [2023-12-16 10:43:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 510 states have (on average 1.384313725490196) internal successors, (706), 515 states have internal predecessors, (706), 337 states have call successors, (337), 13 states have call predecessors, (337), 13 states have return successors, (337), 332 states have call predecessors, (337), 337 states have call successors, (337) [2023-12-16 10:43:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1380 transitions. [2023-12-16 10:43:37,670 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1380 transitions. Word has length 303 [2023-12-16 10:43:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:37,670 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1380 transitions. [2023-12-16 10:43:37,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-12-16 10:43:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1380 transitions. [2023-12-16 10:43:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-16 10:43:37,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:37,673 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:37,684 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 [2023-12-16 10:43:37,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:43:37,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:37,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:37,885 INFO L85 PathProgramCache]: Analyzing trace with hash 941737052, now seen corresponding path program 1 times [2023-12-16 10:43:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568207522] [2023-12-16 10:43:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:37,886 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 [2023-12-16 10:43:37,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:37,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:43:37,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 10:43:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:38,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 10:43:38,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 1344 proven. 120 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2023-12-16 10:43:38,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:43:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 24 proven. 120 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2023-12-16 10:43:38,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568207522] [2023-12-16 10:43:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568207522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:43:38,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:43:38,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-16 10:43:38,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417115402] [2023-12-16 10:43:38,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:43:38,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 10:43:38,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 10:43:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 10:43:38,653 INFO L87 Difference]: Start difference. First operand 861 states and 1380 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-16 10:43:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:39,536 INFO L93 Difference]: Finished difference Result 1415 states and 2256 transitions. [2023-12-16 10:43:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 10:43:39,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 304 [2023-12-16 10:43:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:39,540 INFO L225 Difference]: With dead ends: 1415 [2023-12-16 10:43:39,540 INFO L226 Difference]: Without dead ends: 617 [2023-12-16 10:43:39,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-16 10:43:39,542 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 328 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:39,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 722 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 10:43:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-16 10:43:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 597. [2023-12-16 10:43:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 383 states have (on average 1.412532637075718) internal successors, (541), 385 states have internal predecessors, (541), 199 states have call successors, (199), 14 states have call predecessors, (199), 14 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2023-12-16 10:43:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 939 transitions. [2023-12-16 10:43:39,577 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 939 transitions. Word has length 304 [2023-12-16 10:43:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:39,578 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 939 transitions. [2023-12-16 10:43:39,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-16 10:43:39,578 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 939 transitions. [2023-12-16 10:43:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-16 10:43:39,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:39,581 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:39,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 10:43:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:43:39,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:39,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 240672474, now seen corresponding path program 1 times [2023-12-16 10:43:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820009379] [2023-12-16 10:43:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:39,791 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 [2023-12-16 10:43:39,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:39,792 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) [2023-12-16 10:43:39,819 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 [2023-12-16 10:43:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:40,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 10:43:40,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 1994 proven. 48 refuted. 0 times theorem prover too weak. 2662 trivial. 0 not checked. [2023-12-16 10:43:41,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:43:42,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820009379] [2023-12-16 10:43:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820009379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 10:43:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1829005701] [2023-12-16 10:43:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:42,709 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 10:43:42,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 10:43:42,751 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) [2023-12-16 10:43:42,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 10:43:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:43,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 10:43:43,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 1848 proven. 36 refuted. 0 times theorem prover too weak. 2820 trivial. 0 not checked. [2023-12-16 10:43:44,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:43:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1829005701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 10:43:46,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:43:46,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2023-12-16 10:43:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006820597] [2023-12-16 10:43:46,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:43:46,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 10:43:46,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:46,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 10:43:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-16 10:43:46,483 INFO L87 Difference]: Start difference. First operand 597 states and 939 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-16 10:43:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:48,768 INFO L93 Difference]: Finished difference Result 1304 states and 2007 transitions. [2023-12-16 10:43:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 10:43:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 304 [2023-12-16 10:43:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:48,773 INFO L225 Difference]: With dead ends: 1304 [2023-12-16 10:43:48,773 INFO L226 Difference]: Without dead ends: 860 [2023-12-16 10:43:48,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 649 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2023-12-16 10:43:48,774 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 352 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:48,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 931 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 10:43:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-12-16 10:43:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 833. [2023-12-16 10:43:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 547 states have (on average 1.3948811700182815) internal successors, (763), 551 states have internal predecessors, (763), 260 states have call successors, (260), 25 states have call predecessors, (260), 25 states have return successors, (260), 256 states have call predecessors, (260), 260 states have call successors, (260) [2023-12-16 10:43:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1283 transitions. [2023-12-16 10:43:48,822 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1283 transitions. Word has length 304 [2023-12-16 10:43:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:48,824 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1283 transitions. [2023-12-16 10:43:48,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-16 10:43:48,824 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1283 transitions. [2023-12-16 10:43:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-16 10:43:48,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:48,826 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:43:48,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-16 10:43:49,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-16 10:43:49,236 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 [2023-12-16 10:43:49,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:49,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash 663374300, now seen corresponding path program 1 times [2023-12-16 10:43:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626699266] [2023-12-16 10:43:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:49,238 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 [2023-12-16 10:43:49,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:49,240 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) [2023-12-16 10:43:49,241 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 [2023-12-16 10:43:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:49,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 10:43:49,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 10:44:29,156 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 [2023-12-16 10:44:29,156 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:44:30,208 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 [2023-12-16 10:44:30,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown