/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-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 08:21:04,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 08:21:04,734 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 08:21:04,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 08:21:04,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 08:21:04,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 08:21:04,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 08:21:04,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 08:21:04,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 08:21:04,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 08:21:04,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 08:21:04,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 08:21:04,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 08:21:04,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 08:21:04,758 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 08:21:04,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 08:21:04,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 08:21:04,761 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 08:21:04,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 08:21:04,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 08:21:04,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 08:21:04,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 08:21:04,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 08:21:04,766 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 08:21:04,766 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 08:21:04,766 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 08:21:04,766 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 08:21:04,766 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 08:21:04,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 08:21:04,767 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 08:21:04,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 08:21:04,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 08:21:04,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 08:21:04,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 08:21:04,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:21:04,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 08:21:04,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 08:21:04,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 08:21:04,768 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 08:21:04,768 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 08:21:04,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 08:21:04,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 08:21:04,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 08:21:04,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 08:21:04,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 08:21:04,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 08:21:04,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 08:21:04,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 08:21:04,993 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 08:21:04,994 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 08:21:04,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2024-11-06 08:21:06,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 08:21:06,809 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 08:21:06,809 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2024-11-06 08:21:06,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed8271fc/5d321e03652b44e8aee77e2bc832197d/FLAG21aac62d1 [2024-11-06 08:21:06,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed8271fc/5d321e03652b44e8aee77e2bc832197d [2024-11-06 08:21:06,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 08:21:06,835 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 08:21:06,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 08:21:06,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 08:21:06,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 08:21:06,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:21:06" (1/1) ... [2024-11-06 08:21:06,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268a5a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:06, skipping insertion in model container [2024-11-06 08:21:06,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:21:06" (1/1) ... [2024-11-06 08:21:06,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 08:21:07,002 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-27.i[916,929] [2024-11-06 08:21:07,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:21:07,177 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 08:21:07,190 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-27.i[916,929] [2024-11-06 08:21:07,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:21:07,302 INFO L204 MainTranslator]: Completed translation [2024-11-06 08:21:07,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07 WrapperNode [2024-11-06 08:21:07,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 08:21:07,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 08:21:07,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 08:21:07,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 08:21:07,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,361 INFO L138 Inliner]: procedures = 27, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 362 [2024-11-06 08:21:07,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 08:21:07,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 08:21:07,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 08:21:07,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 08:21:07,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,400 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 08:21:07,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 08:21:07,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 08:21:07,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 08:21:07,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 08:21:07,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (1/1) ... [2024-11-06 08:21:07,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:21:07,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:21:07,529 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 08:21:07,533 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 08:21:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 08:21:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 08:21:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 08:21:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 08:21:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 08:21:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 08:21:07,675 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 08:21:07,678 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 08:21:21,310 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-06 08:21:21,310 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 08:21:21,322 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 08:21:21,322 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 08:21:21,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:21 BoogieIcfgContainer [2024-11-06 08:21:21,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 08:21:21,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 08:21:21,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 08:21:21,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 08:21:21,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:21:06" (1/3) ... [2024-11-06 08:21:21,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b49a07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:21, skipping insertion in model container [2024-11-06 08:21:21,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:21:07" (2/3) ... [2024-11-06 08:21:21,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b49a07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:21, skipping insertion in model container [2024-11-06 08:21:21,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:21" (3/3) ... [2024-11-06 08:21:21,328 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-27.i [2024-11-06 08:21:21,341 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 08:21:21,341 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 08:21:21,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 08:21:21,401 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;@254bc36f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 08:21:21,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 08:21:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 106 states have internal predecessors, (155), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-06 08:21:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-06 08:21:21,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:21:21,426 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:21,426 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:21:21,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:21:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1720319167, now seen corresponding path program 1 times [2024-11-06 08:21:21,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:21:21,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762964802] [2024-11-06 08:21:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:21:21,443 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 08:21:21,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:21:21,446 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 08:21:21,447 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 08:21:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:21:22,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 08:21:22,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:21:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1816 proven. 0 refuted. 0 times theorem prover too weak. 3284 trivial. 0 not checked. [2024-11-06 08:21:22,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:21:22,427 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:21:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762964802] [2024-11-06 08:21:22,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762964802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:21:22,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:21:22,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 08:21:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292573398] [2024-11-06 08:21:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:21:22,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 08:21:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:21:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 08:21:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:21:22,464 INFO L87 Difference]: Start difference. First operand has 159 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 106 states have internal predecessors, (155), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-06 08:21:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:21:22,508 INFO L93 Difference]: Finished difference Result 310 states and 557 transitions. [2024-11-06 08:21:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 08:21:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 331 [2024-11-06 08:21:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:21:22,518 INFO L225 Difference]: With dead ends: 310 [2024-11-06 08:21:22,518 INFO L226 Difference]: Without dead ends: 154 [2024-11-06 08:21:22,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 330 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 08:21:22,524 INFO L432 NwaCegarLoop]: 246 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, 246 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 08:21:22,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 08:21:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-06 08:21:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-06 08:21:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 101 states have internal predecessors, (144), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-06 08:21:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 246 transitions. [2024-11-06 08:21:22,570 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 246 transitions. Word has length 331 [2024-11-06 08:21:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:21:22,570 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 246 transitions. [2024-11-06 08:21:22,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-06 08:21:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 246 transitions. [2024-11-06 08:21:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-06 08:21:22,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:21:22,576 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:22,606 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 [2024-11-06 08:21:22,780 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 08:21:22,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:21:22,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:21:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash -883202369, now seen corresponding path program 1 times [2024-11-06 08:21:22,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:21:22,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127268709] [2024-11-06 08:21:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:21:22,784 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 08:21:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:21:22,787 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 08:21:22,788 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 08:21:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:21:23,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 08:21:23,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:21:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2468 proven. 57 refuted. 0 times theorem prover too weak. 2575 trivial. 0 not checked. [2024-11-06 08:21:26,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:21:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 93 proven. 57 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2024-11-06 08:21:30,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:21:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127268709] [2024-11-06 08:21:30,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127268709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:21:30,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:21:30,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-06 08:21:30,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861542302] [2024-11-06 08:21:30,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:21:30,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 08:21:30,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:21:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 08:21:30,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-06 08:21:30,711 INFO L87 Difference]: Start difference. First operand 154 states and 246 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-06 08:21:39,432 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 08:21:43,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:21:47,446 WARN L539 Checker$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 08:21:51,458 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 08:21:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:21:51,467 INFO L93 Difference]: Finished difference Result 311 states and 494 transitions. [2024-11-06 08:21:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 08:21:51,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 332 [2024-11-06 08:21:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:21:51,567 INFO L225 Difference]: With dead ends: 311 [2024-11-06 08:21:51,567 INFO L226 Difference]: Without dead ends: 160 [2024-11-06 08:21:51,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 655 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-06 08:21:51,569 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 145 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-11-06 08:21:51,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 638 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 345 Invalid, 4 Unknown, 0 Unchecked, 20.3s Time] [2024-11-06 08:21:51,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-06 08:21:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-11-06 08:21:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 104 states have internal predecessors, (145), 51 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-06 08:21:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 247 transitions. [2024-11-06 08:21:51,608 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 247 transitions. Word has length 332 [2024-11-06 08:21:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:21:51,610 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 247 transitions. [2024-11-06 08:21:51,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-06 08:21:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 247 transitions. [2024-11-06 08:21:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-06 08:21:51,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:21:51,621 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:51,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-06 08:21:51,821 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 08:21:51,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:21:51,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:21:51,823 INFO L85 PathProgramCache]: Analyzing trace with hash -860570115, now seen corresponding path program 1 times [2024-11-06 08:21:51,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:21:51,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734551707] [2024-11-06 08:21:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:21:51,825 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 08:21:51,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:21:51,835 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 08:21:51,837 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 08:21:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:21:52,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 08:21:52,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:22:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2597 proven. 51 refuted. 0 times theorem prover too weak. 2452 trivial. 0 not checked. [2024-11-06 08:22:00,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:22:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 147 proven. 3 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2024-11-06 08:22:06,326 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:22:06,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734551707] [2024-11-06 08:22:06,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734551707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:22:06,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:22:06,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2024-11-06 08:22:06,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884353853] [2024-11-06 08:22:06,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:22:06,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 08:22:06,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:22:06,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 08:22:06,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-06 08:22:06,335 INFO L87 Difference]: Start difference. First operand 158 states and 247 transitions. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 4 states have call successors, (70), 3 states have call predecessors, (70), 6 states have return successors, (71), 5 states have call predecessors, (71), 4 states have call successors, (71) [2024-11-06 08:22:26,640 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 08:22:30,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:34,657 WARN L539 Checker$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 08:22:38,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:42,665 WARN L539 Checker$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 08:22:46,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:22:50,677 WARN L539 Checker$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 []