/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:49:32,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:49:32,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:49:32,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:49:32,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:49:32,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:49:32,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:49:32,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:49:32,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:49:32,173 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:49:32,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:49:32,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:49:32,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:49:32,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:49:32,175 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:49:32,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:49:32,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:49:32,176 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:49:32,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:49:32,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:49:32,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:49:32,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:49:32,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:49:32,177 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:49:32,177 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:49:32,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:49:32,178 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:49:32,178 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:49:32,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:49:32,178 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:49:32,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:49:32,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:49:32,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:49:32,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:49:32,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:49:32,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:49:32,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:49:32,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:49:32,180 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:49:32,180 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:49:32,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:49:32,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:49:32,181 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:49:32,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:49:32,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:49:32,181 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:49:32,181 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:49:32,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:49:32,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:49:32,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:49:32,370 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:49:32,370 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:49:32,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-19.i [2023-12-16 11:49:33,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:49:33,553 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:49:33,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-19.i [2023-12-16 11:49:33,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903b3ae6d/dc46976d446d46ac9b75c7085f785cc4/FLAG8774fa489 [2023-12-16 11:49:33,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903b3ae6d/dc46976d446d46ac9b75c7085f785cc4 [2023-12-16 11:49:33,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:49:33,924 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:49:33,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:49:33,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:49:33,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:49:33,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:49:33" (1/1) ... [2023-12-16 11:49:33,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8a093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:33, skipping insertion in model container [2023-12-16 11:49:33,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:49:33" (1/1) ... [2023-12-16 11:49:33,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:49:34,078 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-19.i[919,932] [2023-12-16 11:49:34,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:49:34,146 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:49:34,154 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-19.i[919,932] [2023-12-16 11:49:34,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:49:34,235 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:49:34,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34 WrapperNode [2023-12-16 11:49:34,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:49:34,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:49:34,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:49:34,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:49:34,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,296 INFO L138 Inliner]: procedures = 27, calls = 59, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 245 [2023-12-16 11:49:34,296 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:49:34,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:49:34,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:49:34,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:49:34,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,320 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:49:34,320 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:49:34,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:49:34,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:49:34,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:49:34,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (1/1) ... [2023-12-16 11:49:34,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:49:34,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:49:34,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:49:34,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:49:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:49:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:49:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:49:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:49:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:49:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:49:34,554 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:49:34,558 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:49:50,805 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:49:50,840 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:49:50,840 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:49:50,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:49:50 BoogieIcfgContainer [2023-12-16 11:49:50,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:49:50,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:49:50,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:49:50,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:49:50,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:49:33" (1/3) ... [2023-12-16 11:49:50,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32030afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:49:50, skipping insertion in model container [2023-12-16 11:49:50,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:49:34" (2/3) ... [2023-12-16 11:49:50,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32030afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:49:50, skipping insertion in model container [2023-12-16 11:49:50,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:49:50" (3/3) ... [2023-12-16 11:49:50,846 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-19.i [2023-12-16 11:49:50,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:49:50,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:49:50,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:49:50,917 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@377de742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:49:50,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:49:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 56 states have internal predecessors, (76), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 11:49:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-16 11:49:50,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:49:50,939 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:49:50,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:49:50,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:49:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1069340619, now seen corresponding path program 1 times [2023-12-16 11:49:50,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:49:50,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653566270] [2023-12-16 11:49:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:49:50,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:49:50,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:49:50,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:49:50,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:49:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:49:52,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:49:52,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:49:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 1674 proven. 0 refuted. 0 times theorem prover too weak. 2466 trivial. 0 not checked. [2023-12-16 11:49:52,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:49:52,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:49:52,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653566270] [2023-12-16 11:49:52,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653566270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:49:52,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:49:52,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:49:52,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595021253] [2023-12-16 11:49:52,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:49:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:49:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:49:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:49:52,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:49:52,255 INFO L87 Difference]: Start difference. First operand has 104 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 56 states have internal predecessors, (76), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-16 11:49:57,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:49:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:49:57,626 INFO L93 Difference]: Finished difference Result 205 states and 380 transitions. [2023-12-16 11:49:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:49:58,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 275 [2023-12-16 11:49:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:49:58,072 INFO L225 Difference]: With dead ends: 205 [2023-12-16 11:49:58,072 INFO L226 Difference]: Without dead ends: 102 [2023-12-16 11:49:58,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:49:58,077 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-16 11:49:58,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-16 11:49:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-16 11:49:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-16 11:49:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 11:49:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 162 transitions. [2023-12-16 11:49:58,112 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 162 transitions. Word has length 275 [2023-12-16 11:49:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:49:58,113 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 162 transitions. [2023-12-16 11:49:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-16 11:49:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 162 transitions. [2023-12-16 11:49:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-16 11:49:58,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:49:58,117 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:49:58,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 11:49:58,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:49:58,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:49:58,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:49:58,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1477925897, now seen corresponding path program 1 times [2023-12-16 11:49:58,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:49:58,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065453173] [2023-12-16 11:49:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:49:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:49:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:49:58,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:49:58,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:49:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:49:59,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 11:49:59,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:50:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-16 11:50:05,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:50:05,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:50:05,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065453173] [2023-12-16 11:50:05,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065453173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:50:05,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:50:05,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:50:05,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134740463] [2023-12-16 11:50:05,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:50:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:50:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:50:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:50:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 11:50:05,653 INFO L87 Difference]: Start difference. First operand 102 states and 162 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-16 11:50:11,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:50:15,273 WARN L539 Checker$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 [] [2023-12-16 11:50:19,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:50:25,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:50:29,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:50:33,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:50:37,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:50:41,136 WARN L539 Checker$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 [] [2023-12-16 11:50:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:50:41,137 INFO L93 Difference]: Finished difference Result 344 states and 545 transitions. [2023-12-16 11:50:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 11:50:41,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 276 [2023-12-16 11:50:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:50:41,595 INFO L225 Difference]: With dead ends: 344 [2023-12-16 11:50:41,595 INFO L226 Difference]: Without dead ends: 243 [2023-12-16 11:50:41,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:50:41,597 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 130 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 97 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:50:41,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 525 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 35.4s Time] [2023-12-16 11:50:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-16 11:50:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 201. [2023-12-16 11:50:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 106 states have (on average 1.2830188679245282) internal successors, (136), 106 states have internal predecessors, (136), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-16 11:50:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 320 transitions. [2023-12-16 11:50:41,628 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 320 transitions. Word has length 276 [2023-12-16 11:50:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:50:41,629 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 320 transitions. [2023-12-16 11:50:41,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-16 11:50:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 320 transitions. [2023-12-16 11:50:41,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-16 11:50:41,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:50:41,644 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:50:41,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 11:50:41,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:50:41,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:50:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:50:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash -516218809, now seen corresponding path program 1 times [2023-12-16 11:50:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:50:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422881209] [2023-12-16 11:50:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:50:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:50:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:50:41,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:50:41,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 11:50:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:50:43,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:50:43,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:50:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-16 11:50:49,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:50:49,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:50:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422881209] [2023-12-16 11:50:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422881209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:50:49,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:50:49,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:50:49,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282697664] [2023-12-16 11:50:49,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:50:49,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:50:49,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:50:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:50:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:50:49,302 INFO L87 Difference]: Start difference. First operand 201 states and 320 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Received shutdown request... [2023-12-16 11:50:53,821 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:50:53,832 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:50:54,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:50:54,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 11:50:55,022 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 11:50:55,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:50:55,102 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-16 11:50:55,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 148 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-16 11:50:55,106 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:50:55,107 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 11:50:55,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 11:50:55,114 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 11:50:55,116 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:50:55,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:50:55 BoogieIcfgContainer [2023-12-16 11:50:55,118 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:50:55,118 INFO L158 Benchmark]: Toolchain (without parser) took 81194.08ms. Allocated memory is still 264.2MB. Free memory was 215.0MB in the beginning and 108.9MB in the end (delta: 106.1MB). Peak memory consumption was 107.1MB. Max. memory is 8.0GB. [2023-12-16 11:50:55,118 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 220.2MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:50:55,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.59ms. Allocated memory is still 264.2MB. Free memory was 215.0MB in the beginning and 197.1MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 11:50:55,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.62ms. Allocated memory is still 264.2MB. Free memory was 196.6MB in the beginning and 193.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 11:50:55,119 INFO L158 Benchmark]: Boogie Preprocessor took 55.55ms. Allocated memory is still 264.2MB. Free memory was 193.5MB in the beginning and 188.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 11:50:55,120 INFO L158 Benchmark]: RCFGBuilder took 16487.76ms. Allocated memory is still 264.2MB. Free memory was 188.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 11:50:55,120 INFO L158 Benchmark]: TraceAbstraction took 64275.75ms. Allocated memory is still 264.2MB. Free memory was 156.8MB in the beginning and 108.9MB in the end (delta: 47.9MB). Peak memory consumption was 48.4MB. Max. memory is 8.0GB. [2023-12-16 11:50:55,121 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 220.2MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.59ms. Allocated memory is still 264.2MB. Free memory was 215.0MB in the beginning and 197.1MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.62ms. Allocated memory is still 264.2MB. Free memory was 196.6MB in the beginning and 193.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.55ms. Allocated memory is still 264.2MB. Free memory was 193.5MB in the beginning and 188.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 16487.76ms. Allocated memory is still 264.2MB. Free memory was 188.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 64275.75ms. Allocated memory is still 264.2MB. Free memory was 156.8MB in the beginning and 108.9MB in the end (delta: 47.9MB). Peak memory consumption was 48.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.2s, OverallIterations: 3, TraceHistogramMax: 46, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 47.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 46.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 832 SdHoareTripleChecker+Invalid, 45.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 337 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 495 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 825 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 42 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 827 NumberOfCodeBlocks, 827 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 824 ConstructedInterpolants, 0 QuantifiedInterpolants, 1858 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1320 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 12420/12420 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown