/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-97.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:29:43,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:29:44,057 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 11:29:44,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:29:44,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:29:44,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:29:44,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:29:44,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:29:44,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:29:44,088 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:29:44,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:29:44,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:29:44,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:29:44,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:29:44,090 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:29:44,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:29:44,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:29:44,091 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:29:44,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:29:44,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:29:44,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:29:44,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:29:44,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:29:44,094 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:29:44,094 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:29:44,094 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:29:44,094 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:29:44,094 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:29:44,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:29:44,095 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:29:44,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:29:44,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:29:44,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:29:44,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:29:44,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:29:44,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:29:44,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:29:44,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:29:44,097 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:29:44,097 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:29:44,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:29:44,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:29:44,097 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:29:44,098 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:29:44,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:29:44,098 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:29:44,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:29:44,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:29:44,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:29:44,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:29:44,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:29:44,324 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:29:44,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-97.i [2023-12-16 11:29:45,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:29:45,721 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:29:45,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-97.i [2023-12-16 11:29:45,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87eac116d/a78fbbe9c97348189092ec316073517b/FLAGc04beffc6 [2023-12-16 11:29:45,744 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87eac116d/a78fbbe9c97348189092ec316073517b [2023-12-16 11:29:45,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:29:45,748 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:29:45,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:29:45,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:29:45,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:29:45,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:29:45" (1/1) ... [2023-12-16 11:29:45,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd5e159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:45, skipping insertion in model container [2023-12-16 11:29:45,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:29:45" (1/1) ... [2023-12-16 11:29:45,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:29:45,915 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-97.i[916,929] [2023-12-16 11:29:46,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:29:46,121 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:29:46,129 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-97.i[916,929] [2023-12-16 11:29:46,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:29:46,242 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:29:46,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46 WrapperNode [2023-12-16 11:29:46,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:29:46,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:29:46,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:29:46,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:29:46,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,334 INFO L138 Inliner]: procedures = 27, calls = 110, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 655 [2023-12-16 11:29:46,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:29:46,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:29:46,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:29:46,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:29:46,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,390 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 11:29:46,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:29:46,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:29:46,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:29:46,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:29:46,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (1/1) ... [2023-12-16 11:29:46,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:29:46,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:29:46,493 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 11:29:46,500 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 11:29:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:29:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:29:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:29:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:29:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:29:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:29:46,688 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:29:46,690 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:30:27,333 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:30:27,400 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:30:27,400 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:30:27,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:30:27 BoogieIcfgContainer [2023-12-16 11:30:27,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:30:27,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:30:27,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:30:27,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:30:27,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:29:45" (1/3) ... [2023-12-16 11:30:27,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ef742c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:30:27, skipping insertion in model container [2023-12-16 11:30:27,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:29:46" (2/3) ... [2023-12-16 11:30:27,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ef742c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:30:27, skipping insertion in model container [2023-12-16 11:30:27,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:30:27" (3/3) ... [2023-12-16 11:30:27,407 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-97.i [2023-12-16 11:30:27,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:30:27,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:30:27,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:30:27,467 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;@4754663, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:30:27,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:30:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 171 states have (on average 1.5964912280701755) internal successors, (273), 172 states have internal predecessors, (273), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-16 11:30:27,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-12-16 11:30:27,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:30:27,503 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:27,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:30:27,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:30:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash 813235674, now seen corresponding path program 1 times [2023-12-16 11:30:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:30:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934067460] [2023-12-16 11:30:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:30:27,521 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 11:30:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:30:27,546 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 11:30:27,603 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 11:30:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:30:29,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:30:29,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:30:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 3008 proven. 0 refuted. 0 times theorem prover too weak. 15616 trivial. 0 not checked. [2023-12-16 11:30:29,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:30:29,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:30:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934067460] [2023-12-16 11:30:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934067460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:30:29,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:30:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:30:29,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295064870] [2023-12-16 11:30:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:30:29,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:30:29,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:30:29,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:30:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:30:29,542 INFO L87 Difference]: Start difference. First operand has 271 states, 171 states have (on average 1.5964912280701755) internal successors, (273), 172 states have internal predecessors, (273), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-16 11:30:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:30:29,656 INFO L93 Difference]: Finished difference Result 538 states and 1027 transitions. [2023-12-16 11:30:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:30:29,660 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 616 [2023-12-16 11:30:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:30:29,672 INFO L225 Difference]: With dead ends: 538 [2023-12-16 11:30:29,673 INFO L226 Difference]: Without dead ends: 268 [2023-12-16 11:30:29,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 615 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 11:30:29,681 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:30:29,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 11:30:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-16 11:30:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-16 11:30:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 169 states have (on average 1.5502958579881656) internal successors, (262), 169 states have internal predecessors, (262), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-16 11:30:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 456 transitions. [2023-12-16 11:30:29,770 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 456 transitions. Word has length 616 [2023-12-16 11:30:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:30:29,772 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 456 transitions. [2023-12-16 11:30:29,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-16 11:30:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 456 transitions. [2023-12-16 11:30:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2023-12-16 11:30:29,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:30:29,791 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:29,847 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 11:30:30,012 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 11:30:30,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:30:30,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:30:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1447646472, now seen corresponding path program 1 times [2023-12-16 11:30:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:30:30,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421084593] [2023-12-16 11:30:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:30:30,015 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 11:30:30,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:30:30,021 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 11:30:30,022 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 11:30:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:30:31,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:30:31,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:30:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-12-16 11:30:31,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:30:31,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:30:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421084593] [2023-12-16 11:30:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421084593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:30:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:30:31,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:30:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121334874] [2023-12-16 11:30:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:30:31,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:30:31,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:30:31,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:30:31,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:30:31,910 INFO L87 Difference]: Start difference. First operand 268 states and 456 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-16 11:30:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:30:32,053 INFO L93 Difference]: Finished difference Result 669 states and 1148 transitions. [2023-12-16 11:30:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:30:32,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 617 [2023-12-16 11:30:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:30:32,061 INFO L225 Difference]: With dead ends: 669 [2023-12-16 11:30:32,061 INFO L226 Difference]: Without dead ends: 402 [2023-12-16 11:30:32,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 615 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 11:30:32,063 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 237 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 11:30:32,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 935 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 11:30:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-16 11:30:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 399. [2023-12-16 11:30:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 283 states have (on average 1.6360424028268552) internal successors, (463), 284 states have internal predecessors, (463), 113 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-16 11:30:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 689 transitions. [2023-12-16 11:30:32,117 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 689 transitions. Word has length 617 [2023-12-16 11:30:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:30:32,122 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 689 transitions. [2023-12-16 11:30:32,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-16 11:30:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 689 transitions. [2023-12-16 11:30:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-16 11:30:32,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:30:32,134 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:32,182 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 11:30:32,350 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 11:30:32,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:30:32,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:30:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1830839432, now seen corresponding path program 1 times [2023-12-16 11:30:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:30:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512356064] [2023-12-16 11:30:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:30:32,353 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 11:30:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:30:32,356 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 11:30:32,360 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 11:30:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:30:34,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:30:34,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:30:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 9298 proven. 159 refuted. 0 times theorem prover too weak. 9167 trivial. 0 not checked. [2023-12-16 11:30:36,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:30:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 129 proven. 159 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-12-16 11:30:37,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:30:37,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512356064] [2023-12-16 11:30:37,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512356064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:30:37,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:30:37,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:30:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617337526] [2023-12-16 11:30:37,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:30:37,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:30:37,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:30:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:30:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:30:37,217 INFO L87 Difference]: Start difference. First operand 399 states and 689 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-16 11:30:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:30:39,353 INFO L93 Difference]: Finished difference Result 805 states and 1382 transitions. [2023-12-16 11:30:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:30:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) Word has length 618 [2023-12-16 11:30:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:30:39,360 INFO L225 Difference]: With dead ends: 805 [2023-12-16 11:30:39,360 INFO L226 Difference]: Without dead ends: 407 [2023-12-16 11:30:39,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1228 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:30:39,362 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 255 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:30:39,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 833 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 11:30:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-16 11:30:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2023-12-16 11:30:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 284 states have (on average 1.5985915492957747) internal successors, (454), 285 states have internal predecessors, (454), 113 states have call successors, (113), 3 states have call predecessors, (113), 3 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-16 11:30:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 680 transitions. [2023-12-16 11:30:39,385 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 680 transitions. Word has length 618 [2023-12-16 11:30:39,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:30:39,386 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 680 transitions. [2023-12-16 11:30:39,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-16 11:30:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 680 transitions. [2023-12-16 11:30:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-16 11:30:39,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:30:39,391 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:39,440 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 11:30:39,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:30:39,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:30:39,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:30:39,601 INFO L85 PathProgramCache]: Analyzing trace with hash -17104582, now seen corresponding path program 1 times [2023-12-16 11:30:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:30:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544447500] [2023-12-16 11:30:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:30:39,618 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 11:30:39,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:30:39,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:30:39,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 11:30:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:30:41,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 11:30:41,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:30:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 9886 proven. 471 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-16 11:30:47,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:30:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 375 proven. 480 refuted. 0 times theorem prover too weak. 17769 trivial. 0 not checked. [2023-12-16 11:30:50,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:30:50,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544447500] [2023-12-16 11:30:50,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544447500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:30:50,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:30:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-16 11:30:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479939105] [2023-12-16 11:30:50,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:30:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 11:30:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:30:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 11:30:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-16 11:30:50,303 INFO L87 Difference]: Start difference. First operand 401 states and 680 transitions. Second operand has 18 states, 18 states have (on average 9.055555555555555) internal successors, (163), 18 states have internal predecessors, (163), 4 states have call successors, (153), 4 states have call predecessors, (153), 10 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2023-12-16 11:30:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:30:58,032 INFO L93 Difference]: Finished difference Result 1314 states and 2189 transitions. [2023-12-16 11:30:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 11:30:58,032 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.055555555555555) internal successors, (163), 18 states have internal predecessors, (163), 4 states have call successors, (153), 4 states have call predecessors, (153), 10 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) Word has length 618 [2023-12-16 11:30:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:30:58,037 INFO L225 Difference]: With dead ends: 1314 [2023-12-16 11:30:58,037 INFO L226 Difference]: Without dead ends: 914 [2023-12-16 11:30:58,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1221 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2023-12-16 11:30:58,039 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 2257 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-16 11:30:58,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 1804 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-16 11:30:58,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-12-16 11:30:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 885. [2023-12-16 11:30:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 606 states have (on average 1.5247524752475248) internal successors, (924), 609 states have internal predecessors, (924), 266 states have call successors, (266), 12 states have call predecessors, (266), 12 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2023-12-16 11:30:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1456 transitions. [2023-12-16 11:30:58,119 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1456 transitions. Word has length 618 [2023-12-16 11:30:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:30:58,121 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1456 transitions. [2023-12-16 11:30:58,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.055555555555555) internal successors, (163), 18 states have internal predecessors, (163), 4 states have call successors, (153), 4 states have call predecessors, (153), 10 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2023-12-16 11:30:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1456 transitions. [2023-12-16 11:30:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2023-12-16 11:30:58,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:30:58,125 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:58,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:30:58,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:30:58,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:30:58,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:30:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash 358871279, now seen corresponding path program 1 times [2023-12-16 11:30:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:30:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675899677] [2023-12-16 11:30:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:30:58,344 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 11:30:58,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:30:58,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:30:58,347 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 (6)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 11:30:59,594 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 11:30:59,599 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:31:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:31:00,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:31:00,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:31:00,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:31:00,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:31:00,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:31:00,506 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 620 with TraceHistMax 97,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. [2023-12-16 11:31:00,509 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 11:31:00,511 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:31:00,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:31:00 BoogieIcfgContainer [2023-12-16 11:31:00,512 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:31:00,513 INFO L158 Benchmark]: Toolchain (without parser) took 74764.72ms. Allocated memory was 234.9MB in the beginning and 343.9MB in the end (delta: 109.1MB). Free memory was 177.6MB in the beginning and 243.1MB in the end (delta: -65.6MB). Peak memory consumption was 44.5MB. Max. memory is 8.0GB. [2023-12-16 11:31:00,513 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory was 142.6MB in the beginning and 142.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:31:00,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.93ms. Allocated memory is still 234.9MB. Free memory was 177.6MB in the beginning and 145.9MB in the end (delta: 31.6MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 11:31:00,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.43ms. Allocated memory is still 234.9MB. Free memory was 145.9MB in the beginning and 139.8MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 11:31:00,513 INFO L158 Benchmark]: Boogie Preprocessor took 112.48ms. Allocated memory is still 234.9MB. Free memory was 139.8MB in the beginning and 195.6MB in the end (delta: -55.8MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2023-12-16 11:31:00,514 INFO L158 Benchmark]: RCFGBuilder took 40952.46ms. Allocated memory was 234.9MB in the beginning and 343.9MB in the end (delta: 109.1MB). Free memory was 195.6MB in the beginning and 238.9MB in the end (delta: -43.4MB). Peak memory consumption was 72.1MB. Max. memory is 8.0GB. [2023-12-16 11:31:00,514 INFO L158 Benchmark]: TraceAbstraction took 33109.91ms. Allocated memory is still 343.9MB. Free memory was 237.9MB in the beginning and 243.1MB in the end (delta: -5.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:31:00,515 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory was 142.6MB in the beginning and 142.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 493.93ms. Allocated memory is still 234.9MB. Free memory was 177.6MB in the beginning and 145.9MB in the end (delta: 31.6MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 90.43ms. Allocated memory is still 234.9MB. Free memory was 145.9MB in the beginning and 139.8MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 112.48ms. Allocated memory is still 234.9MB. Free memory was 139.8MB in the beginning and 195.6MB in the end (delta: -55.8MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * RCFGBuilder took 40952.46ms. Allocated memory was 234.9MB in the beginning and 343.9MB in the end (delta: 109.1MB). Free memory was 195.6MB in the beginning and 238.9MB in the end (delta: -43.4MB). Peak memory consumption was 72.1MB. Max. memory is 8.0GB. * TraceAbstraction took 33109.91ms. Allocated memory is still 343.9MB. Free memory was 237.9MB in the beginning and 243.1MB in the end (delta: -5.2MB). There was no memory consumed. 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 NwaCegarLoop was analyzing trace of length 620 with TraceHistMax 97,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 271 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 33.1s, OverallIterations: 5, TraceHistogramMax: 97, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2831 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2749 mSDsluCounter, 4025 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2228 mSDsCounter, 921 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2325 IncrementalHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 921 mSolverCounterUnsat, 1797 mSDtfsCounter, 2325 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3738 GetRequests, 3679 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=885occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 2469 NumberOfCodeBlocks, 2469 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 3699 ConstructedInterpolants, 0 QuantifiedInterpolants, 9975 SizeOfPredicates, 10 NumberOfNonLiveVariables, 4048 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 110475/111744 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