/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-30.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 08:21:32,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 08:21:33,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-06 08:21:33,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 08:21:33,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 08:21:33,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 08:21:33,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 08:21:33,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 08:21:33,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 08:21:33,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 08:21:33,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 08:21:33,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 08:21:33,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 08:21:33,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 08:21:33,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 08:21:33,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 08:21:33,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 08:21:33,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 08:21:33,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 08:21:33,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 08:21:33,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 08:21:33,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 08:21:33,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 08:21:33,063 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 08:21:33,063 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 08:21:33,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 08:21:33,063 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 08:21:33,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 08:21:33,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 08:21:33,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 08:21:33,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 08:21:33,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 08:21:33,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 08:21:33,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 08:21:33,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:21:33,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 08:21:33,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 08:21:33,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 08:21:33,066 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 08:21:33,066 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 08:21:33,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 08:21:33,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 08:21:33,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 08:21:33,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 08:21:33,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 08:21:33,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 08:21:33,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 08:21:33,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 08:21:33,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 08:21:33,285 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 08:21:33,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-30.i [2024-11-06 08:21:34,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 08:21:34,789 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 08:21:34,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-30.i [2024-11-06 08:21:34,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9ec9f65/d2b2193bc7874dbebd5e748e635956a9/FLAGb6f18832f [2024-11-06 08:21:35,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9ec9f65/d2b2193bc7874dbebd5e748e635956a9 [2024-11-06 08:21:35,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 08:21:35,149 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 08:21:35,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 08:21:35,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 08:21:35,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 08:21:35,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3625463b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35, skipping insertion in model container [2024-11-06 08:21:35,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,206 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 08:21:35,343 WARN L250 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_operatoramount_amount250_file-30.i[916,929] [2024-11-06 08:21:35,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:21:35,459 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 08:21:35,472 WARN L250 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_operatoramount_amount250_file-30.i[916,929] [2024-11-06 08:21:35,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:21:35,603 INFO L204 MainTranslator]: Completed translation [2024-11-06 08:21:35,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35 WrapperNode [2024-11-06 08:21:35,604 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 08:21:35,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 08:21:35,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 08:21:35,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 08:21:35,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,712 INFO L138 Inliner]: procedures = 27, calls = 65, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 342 [2024-11-06 08:21:35,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 08:21:35,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 08:21:35,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 08:21:35,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 08:21:35,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,763 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]. [2024-11-06 08:21:35,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 08:21:35,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 08:21:35,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 08:21:35,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 08:21:35,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (1/1) ... [2024-11-06 08:21:35,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:21:35,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:21:35,859 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) [2024-11-06 08:21:35,871 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 [2024-11-06 08:21:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 08:21:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 08:21:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 08:21:35,905 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 08:21:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 08:21:35,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 08:21:36,000 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 08:21:36,001 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 08:21:43,405 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-06 08:21:43,405 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 08:21:43,421 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 08:21:43,422 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 08:21:43,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:43 BoogieIcfgContainer [2024-11-06 08:21:43,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 08:21:43,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 08:21:43,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 08:21:43,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 08:21:43,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:21:35" (1/3) ... [2024-11-06 08:21:43,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e0d24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:43, skipping insertion in model container [2024-11-06 08:21:43,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:35" (2/3) ... [2024-11-06 08:21:43,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e0d24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:43, skipping insertion in model container [2024-11-06 08:21:43,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:43" (3/3) ... [2024-11-06 08:21:43,430 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-30.i [2024-11-06 08:21:43,442 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 08:21:43,442 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 08:21:43,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 08:21:43,510 INFO L333 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, 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;@3c9bfccc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 08:21:43,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 08:21:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 93 states have internal predecessors, (135), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-06 08:21:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-06 08:21:43,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:21:43,534 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:21:43,535 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:21:43,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:21:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1154907571, now seen corresponding path program 1 times [2024-11-06 08:21:43,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:21:43,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624417319] [2024-11-06 08:21:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:21:43,554 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 [2024-11-06 08:21:43,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:21:43,557 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) [2024-11-06 08:21:43,558 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 [2024-11-06 08:21:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:21:44,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 08:21:44,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:21:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1974 proven. 0 refuted. 0 times theorem prover too weak. 3330 trivial. 0 not checked. [2024-11-06 08:21:44,266 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:21:44,268 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:21:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624417319] [2024-11-06 08:21:44,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624417319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:21:44,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:21:44,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 08:21:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143525757] [2024-11-06 08:21:44,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:21:44,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 08:21:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:21:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 08:21:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:21:44,301 INFO L87 Difference]: Start difference. First operand has 147 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 93 states have internal predecessors, (135), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-06 08:21:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:21:44,334 INFO L93 Difference]: Finished difference Result 287 states and 524 transitions. [2024-11-06 08:21:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 08:21:44,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 328 [2024-11-06 08:21:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:21:44,343 INFO L225 Difference]: With dead ends: 287 [2024-11-06 08:21:44,343 INFO L226 Difference]: Without dead ends: 143 [2024-11-06 08:21:44,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:21:44,351 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 08:21:44,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 08:21:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-06 08:21:44,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-06 08:21:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 89 states have (on average 1.4269662921348314) internal successors, (127), 89 states have internal predecessors, (127), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-06 08:21:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 231 transitions. [2024-11-06 08:21:44,399 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 231 transitions. Word has length 328 [2024-11-06 08:21:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:21:44,399 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 231 transitions. [2024-11-06 08:21:44,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-06 08:21:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 231 transitions. [2024-11-06 08:21:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-06 08:21:44,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:21:44,405 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:21:44,430 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 [2024-11-06 08:21:44,608 WARN L453 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 [2024-11-06 08:21:44,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:21:44,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:21:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1728280095, now seen corresponding path program 1 times [2024-11-06 08:21:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:21:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090501136] [2024-11-06 08:21:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:21:44,612 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 [2024-11-06 08:21:44,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:21:44,617 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) [2024-11-06 08:21:44,619 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 [2024-11-06 08:21:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:21:45,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 08:21:45,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:21:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-06 08:21:50,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:21:50,509 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:21:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090501136] [2024-11-06 08:21:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090501136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:21:50,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:21:50,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 08:21:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149776982] [2024-11-06 08:21:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:21:50,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 08:21:50,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:21:50,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 08:21:50,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 08:21:50,512 INFO L87 Difference]: Start difference. First operand 143 states and 231 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-06 08:21:56,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:00,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:04,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:08,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:12,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:22:12,622 INFO L93 Difference]: Finished difference Result 476 states and 775 transitions. [2024-11-06 08:22:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 08:22:12,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 330 [2024-11-06 08:22:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:22:12,774 INFO L225 Difference]: With dead ends: 476 [2024-11-06 08:22:12,774 INFO L226 Difference]: Without dead ends: 336 [2024-11-06 08:22:12,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 08:22:12,783 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 214 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 105 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2024-11-06 08:22:12,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 758 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 22.0s Time] [2024-11-06 08:22:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-06 08:22:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 281. [2024-11-06 08:22:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 174 states have (on average 1.4310344827586208) internal successors, (249), 174 states have internal predecessors, (249), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-06 08:22:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 457 transitions. [2024-11-06 08:22:12,892 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 457 transitions. Word has length 330 [2024-11-06 08:22:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:22:12,893 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 457 transitions. [2024-11-06 08:22:12,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-06 08:22:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 457 transitions. [2024-11-06 08:22:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-06 08:22:12,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:22:12,897 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:22:12,929 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 [2024-11-06 08:22:13,098 WARN L453 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 [2024-11-06 08:22:13,099 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:22:13,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:22:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1907155679, now seen corresponding path program 1 times [2024-11-06 08:22:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:22:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139241077] [2024-11-06 08:22:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:22:13,101 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 [2024-11-06 08:22:13,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:22:13,106 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) [2024-11-06 08:22:13,107 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 [2024-11-06 08:22:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:22:13,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 08:22:13,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:22:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2241 proven. 108 refuted. 0 times theorem prover too weak. 2955 trivial. 0 not checked. [2024-11-06 08:22:18,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:22:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-06 08:22:23,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:22:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139241077] [2024-11-06 08:22:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139241077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:22:23,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:22:23,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-06 08:22:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639838087] [2024-11-06 08:22:23,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:22:23,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 08:22:23,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:22:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 08:22:23,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-06 08:22:23,159 INFO L87 Difference]: Start difference. First operand 281 states and 457 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-06 08:22:30,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:34,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:38,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:22:38,804 INFO L93 Difference]: Finished difference Result 573 states and 921 transitions. [2024-11-06 08:22:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 08:22:38,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 330 [2024-11-06 08:22:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:22:38,889 INFO L225 Difference]: With dead ends: 573 [2024-11-06 08:22:38,889 INFO L226 Difference]: Without dead ends: 295 [2024-11-06 08:22:38,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-06 08:22:38,891 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 177 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2024-11-06 08:22:38,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 408 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 264 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2024-11-06 08:22:38,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-06 08:22:38,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 287. [2024-11-06 08:22:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 178 states have (on average 1.398876404494382) internal successors, (249), 178 states have internal predecessors, (249), 104 states have call successors, (104), 4 states have call predecessors, (104), 4 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-06 08:22:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 457 transitions. [2024-11-06 08:22:38,941 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 457 transitions. Word has length 330 [2024-11-06 08:22:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:22:38,942 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 457 transitions. [2024-11-06 08:22:38,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-06 08:22:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 457 transitions. [2024-11-06 08:22:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-06 08:22:38,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:22:38,946 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:22:38,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-06 08:22:39,150 WARN L453 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 [2024-11-06 08:22:39,151 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:22:39,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:22:39,152 INFO L85 PathProgramCache]: Analyzing trace with hash -9623329, now seen corresponding path program 1 times [2024-11-06 08:22:39,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:22:39,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064339045] [2024-11-06 08:22:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:22:39,153 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 [2024-11-06 08:22:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:22:39,155 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) [2024-11-06 08:22:39,156 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 [2024-11-06 08:22:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:22:39,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 08:22:39,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:22:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1513 proven. 24 refuted. 0 times theorem prover too weak. 3767 trivial. 0 not checked. [2024-11-06 08:22:41,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:22:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 129 proven. 24 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-06 08:22:44,737 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:22:44,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064339045] [2024-11-06 08:22:44,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064339045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:22:44,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:22:44,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-06 08:22:44,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262397747] [2024-11-06 08:22:44,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:22:44,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 08:22:44,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:22:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 08:22:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-06 08:22:44,740 INFO L87 Difference]: Start difference. First operand 287 states and 457 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-11-06 08:22:52,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:56,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:23:00,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:23:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:23:00,188 INFO L93 Difference]: Finished difference Result 589 states and 925 transitions. [2024-11-06 08:23:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 08:23:00,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 330 [2024-11-06 08:23:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:23:00,281 INFO L225 Difference]: With dead ends: 589 [2024-11-06 08:23:00,281 INFO L226 Difference]: Without dead ends: 305 [2024-11-06 08:23:00,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 652 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-06 08:23:00,283 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 206 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 90 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2024-11-06 08:23:00,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 395 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 271 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2024-11-06 08:23:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-06 08:23:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 293. [2024-11-06 08:23:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 182 states have (on average 1.3571428571428572) internal successors, (247), 182 states have internal predecessors, (247), 104 states have call successors, (104), 6 states have call predecessors, (104), 6 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-06 08:23:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 455 transitions. [2024-11-06 08:23:00,342 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 455 transitions. Word has length 330 [2024-11-06 08:23:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:23:00,345 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 455 transitions. [2024-11-06 08:23:00,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-11-06 08:23:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 455 transitions. [2024-11-06 08:23:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-06 08:23:00,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:23:00,353 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:23:00,413 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 [2024-11-06 08:23:00,554 WARN L453 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 [2024-11-06 08:23:00,555 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:23:00,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:23:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash -402650339, now seen corresponding path program 1 times [2024-11-06 08:23:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:23:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165890201] [2024-11-06 08:23:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:23:00,557 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 [2024-11-06 08:23:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:23:00,558 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) [2024-11-06 08:23:00,559 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 [2024-11-06 08:23:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:23:01,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 08:23:01,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:23:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2571 proven. 93 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2024-11-06 08:23:05,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:23:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 60 proven. 93 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-06 08:23:09,370 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:23:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165890201] [2024-11-06 08:23:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165890201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:23:09,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:23:09,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-06 08:23:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491772858] [2024-11-06 08:23:09,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:23:09,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 08:23:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:23:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 08:23:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-06 08:23:09,373 INFO L87 Difference]: Start difference. First operand 293 states and 455 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2024-11-06 08:23:16,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:23:20,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []