/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_floatingpointinfluence_no-floats_file-76.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 07:58:54,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 07:58:54,970 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 07:58:54,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 07:58:54,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 07:58:55,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 07:58:55,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 07:58:55,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 07:58:55,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 07:58:55,011 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 07:58:55,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 07:58:55,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 07:58:55,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 07:58:55,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 07:58:55,014 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 07:58:55,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 07:58:55,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 07:58:55,017 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 07:58:55,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 07:58:55,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 07:58:55,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 07:58:55,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 07:58:55,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 07:58:55,019 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 07:58:55,019 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 07:58:55,019 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 07:58:55,019 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 07:58:55,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 07:58:55,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 07:58:55,020 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 07:58:55,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 07:58:55,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 07:58:55,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 07:58:55,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 07:58:55,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 07:58:55,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 07:58:55,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 07:58:55,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 07:58:55,023 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 07:58:55,023 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 07:58:55,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 07:58:55,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 07:58:55,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 07:58:55,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 07:58:55,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 07:58:55,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 07:58:55,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 07:58:55,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 07:58:55,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 07:58:55,274 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 07:58:55,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i [2024-11-06 07:58:56,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 07:58:56,846 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 07:58:56,847 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i [2024-11-06 07:58:56,854 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fca0c889/6ad335cac26044979f5bc53a7cbbc334/FLAG585661442 [2024-11-06 07:58:56,867 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fca0c889/6ad335cac26044979f5bc53a7cbbc334 [2024-11-06 07:58:56,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 07:58:56,871 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 07:58:56,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 07:58:56,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 07:58:56,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 07:58:56,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:58:56" (1/1) ... [2024-11-06 07:58:56,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245414da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:56, skipping insertion in model container [2024-11-06 07:58:56,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:58:56" (1/1) ... [2024-11-06 07:58:56,904 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 07:58:57,072 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_floatingpointinfluence_no-floats_file-76.i[916,929] [2024-11-06 07:58:57,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 07:58:57,148 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 07:58:57,162 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_floatingpointinfluence_no-floats_file-76.i[916,929] [2024-11-06 07:58:57,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 07:58:57,207 INFO L204 MainTranslator]: Completed translation [2024-11-06 07:58:57,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57 WrapperNode [2024-11-06 07:58:57,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 07:58:57,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 07:58:57,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 07:58:57,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 07:58:57,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,248 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2024-11-06 07:58:57,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 07:58:57,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 07:58:57,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 07:58:57,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 07:58:57,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,266 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,276 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 07:58:57,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 07:58:57,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 07:58:57,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 07:58:57,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 07:58:57,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (1/1) ... [2024-11-06 07:58:57,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 07:58:57,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 07:58:57,334 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 07:58:57,341 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 07:58:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 07:58:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 07:58:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 07:58:57,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 07:58:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 07:58:57,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 07:58:57,459 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 07:58:57,461 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 07:58:59,393 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-06 07:58:59,394 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 07:58:59,410 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 07:58:59,411 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 07:58:59,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:58:59 BoogieIcfgContainer [2024-11-06 07:58:59,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 07:58:59,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 07:58:59,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 07:58:59,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 07:58:59,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:58:56" (1/3) ... [2024-11-06 07:58:59,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c0d3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:58:59, skipping insertion in model container [2024-11-06 07:58:59,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:58:57" (2/3) ... [2024-11-06 07:58:59,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c0d3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:58:59, skipping insertion in model container [2024-11-06 07:58:59,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:58:59" (3/3) ... [2024-11-06 07:58:59,421 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-76.i [2024-11-06 07:58:59,435 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 07:58:59,435 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 07:58:59,482 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 07:58:59,487 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;@48a930e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 07:58:59,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 07:58:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 07:58:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-06 07:58:59,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 07:58:59,504 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:59,504 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 07:58:59,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 07:58:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash -882179527, now seen corresponding path program 1 times [2024-11-06 07:58:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 07:58:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827902214] [2024-11-06 07:58:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 07:58:59,524 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 07:58:59,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 07:58:59,525 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 07:58:59,527 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 07:58:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 07:58:59,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 07:58:59,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 07:58:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-06 07:58:59,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 07:58:59,790 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 07:58:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827902214] [2024-11-06 07:58:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827902214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 07:58:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 07:58:59,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 07:58:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541575813] [2024-11-06 07:58:59,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 07:58:59,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 07:58:59,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 07:58:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 07:58:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 07:58:59,823 INFO L87 Difference]: Start difference. First operand has 52 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-06 07:58:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 07:58:59,845 INFO L93 Difference]: Finished difference Result 97 states and 166 transitions. [2024-11-06 07:58:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 07:58:59,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2024-11-06 07:58:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 07:58:59,852 INFO L225 Difference]: With dead ends: 97 [2024-11-06 07:58:59,852 INFO L226 Difference]: Without dead ends: 48 [2024-11-06 07:58:59,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 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 07:58:59,857 INFO L432 NwaCegarLoop]: 70 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, 70 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 07:58:59,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 07:58:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-06 07:58:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-06 07:58:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 07:58:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2024-11-06 07:58:59,901 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 102 [2024-11-06 07:58:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 07:58:59,902 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2024-11-06 07:58:59,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-06 07:58:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2024-11-06 07:58:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-06 07:58:59,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 07:58:59,905 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:59,913 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 07:59:00,105 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 07:59:00,106 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 07:59:00,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 07:59:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash 199022833, now seen corresponding path program 1 times [2024-11-06 07:59:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 07:59:00,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024876962] [2024-11-06 07:59:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 07:59:00,108 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 07:59:00,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 07:59:00,110 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 07:59:00,111 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 07:59:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 07:59:00,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 07:59:00,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 07:59:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-06 07:59:00,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 07:59:00,841 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 07:59:00,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024876962] [2024-11-06 07:59:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024876962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 07:59:00,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 07:59:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 07:59:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574921709] [2024-11-06 07:59:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 07:59:00,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 07:59:00,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 07:59:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 07:59:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 07:59:00,845 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-06 07:59:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 07:59:03,466 INFO L93 Difference]: Finished difference Result 150 states and 220 transitions. [2024-11-06 07:59:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 07:59:03,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 103 [2024-11-06 07:59:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 07:59:03,487 INFO L225 Difference]: With dead ends: 150 [2024-11-06 07:59:03,487 INFO L226 Difference]: Without dead ends: 105 [2024-11-06 07:59:03,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 07:59:03,489 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 55 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-06 07:59:03,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-06 07:59:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-06 07:59:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2024-11-06 07:59:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-06 07:59:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 135 transitions. [2024-11-06 07:59:03,513 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 135 transitions. Word has length 103 [2024-11-06 07:59:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 07:59:03,514 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 135 transitions. [2024-11-06 07:59:03,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-06 07:59:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 135 transitions. [2024-11-06 07:59:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-06 07:59:03,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 07:59:03,516 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:03,525 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 07:59:03,717 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 07:59:03,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 07:59:03,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 07:59:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash -194004177, now seen corresponding path program 1 times [2024-11-06 07:59:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 07:59:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54565219] [2024-11-06 07:59:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 07:59:03,720 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 07:59:03,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 07:59:03,722 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 07:59:03,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-06 07:59:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 07:59:03,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 07:59:03,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 07:59:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-06 07:59:03,923 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 07:59:03,923 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 07:59:03,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54565219] [2024-11-06 07:59:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54565219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 07:59:03,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 07:59:03,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 07:59:03,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557788196] [2024-11-06 07:59:03,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 07:59:03,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 07:59:03,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 07:59:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 07:59:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 07:59:03,926 INFO L87 Difference]: Start difference. First operand 91 states and 135 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-06 07:59:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 07:59:04,797 INFO L93 Difference]: Finished difference Result 179 states and 267 transitions. [2024-11-06 07:59:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 07:59:04,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 103 [2024-11-06 07:59:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 07:59:04,819 INFO L225 Difference]: With dead ends: 179 [2024-11-06 07:59:04,819 INFO L226 Difference]: Without dead ends: 91 [2024-11-06 07:59:04,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 07:59:04,821 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 07:59:04,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 07:59:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-06 07:59:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-06 07:59:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-06 07:59:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 133 transitions. [2024-11-06 07:59:04,846 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 133 transitions. Word has length 103 [2024-11-06 07:59:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 07:59:04,847 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 133 transitions. [2024-11-06 07:59:04,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-06 07:59:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 133 transitions. [2024-11-06 07:59:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-06 07:59:04,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 07:59:04,849 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:04,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-06 07:59:05,050 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 07:59:05,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 07:59:05,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 07:59:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash -717862088, now seen corresponding path program 1 times [2024-11-06 07:59:05,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 07:59:05,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71066617] [2024-11-06 07:59:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 07:59:05,053 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 07:59:05,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 07:59:05,056 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 07:59:05,058 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 07:59:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 07:59:05,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 07:59:05,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 07:59:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-06 07:59:05,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 07:59:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-06 07:59:05,729 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 07:59:05,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71066617] [2024-11-06 07:59:05,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71066617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 07:59:05,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 07:59:05,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-06 07:59:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090592156] [2024-11-06 07:59:05,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 07:59:05,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 07:59:05,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 07:59:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 07:59:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-06 07:59:05,733 INFO L87 Difference]: Start difference. First operand 91 states and 133 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-06 07:59:07,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 07:59:10,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 07:59:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 07:59:10,345 INFO L93 Difference]: Finished difference Result 285 states and 399 transitions. [2024-11-06 07:59:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 07:59:10,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 104 [2024-11-06 07:59:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 07:59:10,369 INFO L225 Difference]: With dead ends: 285 [2024-11-06 07:59:10,369 INFO L226 Difference]: Without dead ends: 197 [2024-11-06 07:59:10,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2024-11-06 07:59:10,371 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 77 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-06 07:59:10,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 183 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-06 07:59:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-06 07:59:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 105. [2024-11-06 07:59:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-06 07:59:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 142 transitions. [2024-11-06 07:59:10,402 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 142 transitions. Word has length 104 [2024-11-06 07:59:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 07:59:10,406 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 142 transitions. [2024-11-06 07:59:10,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-06 07:59:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 142 transitions. [2024-11-06 07:59:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-06 07:59:10,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 07:59:10,410 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:10,422 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 (5)] Ended with exit code 0 [2024-11-06 07:59:10,611 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 07:59:10,611 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 07:59:10,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 07:59:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash -660603786, now seen corresponding path program 1 times [2024-11-06 07:59:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 07:59:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860837461] [2024-11-06 07:59:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 07:59:10,613 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 07:59:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 07:59:10,615 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 07:59:10,616 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 07:59:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 07:59:10,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-06 07:59:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 07:59:10,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-06 07:59:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106525566] [2024-11-06 07:59:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 07:59:10,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 07:59:10,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 07:59:10,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 07:59:10,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 07:59:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 07:59:11,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 07:59:11,338 INFO L278 TraceCheckSpWp]: Computing forward predicates...