/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-25_file-29.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:13:05,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:13:05,372 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 11:13:05,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:13:05,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:13:05,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:13:05,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:13:05,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:13:05,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:13:05,400 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:13:05,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:13:05,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:13:05,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:13:05,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:13:05,402 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:13:05,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:13:05,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:13:05,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:13:05,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:13:05,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:13:05,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:13:05,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:13:05,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:13:05,404 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:13:05,404 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:13:05,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:13:05,405 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:13:05,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:13:05,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:13:05,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:13:05,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:13:05,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:13:05,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:13:05,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:13:05,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:13:05,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:13:05,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:13:05,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:13:05,407 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:13:05,407 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:13:05,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:13:05,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:13:05,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:13:05,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:13:05,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:13:05,408 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:13:05,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:13:05,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:13:05,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:13:05,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:13:05,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:13:05,602 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:13:05,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-29.i [2023-12-16 11:13:06,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:13:06,889 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:13:06,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-29.i [2023-12-16 11:13:06,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62161a8a7/780edaa05ac74ef5b0a4a65b4ffccd66/FLAGc6704ee10 [2023-12-16 11:13:06,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62161a8a7/780edaa05ac74ef5b0a4a65b4ffccd66 [2023-12-16 11:13:06,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:13:06,917 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:13:06,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:13:06,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:13:06,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:13:06,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:13:06" (1/1) ... [2023-12-16 11:13:06,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36035da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:06, skipping insertion in model container [2023-12-16 11:13:06,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:13:06" (1/1) ... [2023-12-16 11:13:06,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:13:07,078 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_fillercodesize_ps-cn-25_file-29.i[915,928] [2023-12-16 11:13:07,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:13:07,133 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:13:07,142 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-25_file-29.i[915,928] [2023-12-16 11:13:07,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:13:07,178 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:13:07,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07 WrapperNode [2023-12-16 11:13:07,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:13:07,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:13:07,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:13:07,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:13:07,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,224 INFO L138 Inliner]: procedures = 27, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2023-12-16 11:13:07,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:13:07,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:13:07,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:13:07,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:13:07,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,249 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 11:13:07,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:13:07,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:13:07,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:13:07,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:13:07,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (1/1) ... [2023-12-16 11:13:07,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:13:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:13:07,340 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 11:13:07,358 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 11:13:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:13:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:13:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:13:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:13:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:13:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:13:07,465 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:13:07,471 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:13:09,941 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:13:09,992 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:13:09,992 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:13:09,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:13:09 BoogieIcfgContainer [2023-12-16 11:13:09,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:13:09,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:13:09,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:13:09,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:13:09,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:13:06" (1/3) ... [2023-12-16 11:13:09,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b45202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:13:09, skipping insertion in model container [2023-12-16 11:13:09,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:13:07" (2/3) ... [2023-12-16 11:13:09,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b45202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:13:09, skipping insertion in model container [2023-12-16 11:13:09,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:13:09" (3/3) ... [2023-12-16 11:13:09,998 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-29.i [2023-12-16 11:13:10,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:13:10,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:13:10,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:13:10,048 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;@eb656e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:13:10,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:13:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 11:13:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-16 11:13:10,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:13:10,071 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:10,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:13:10,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:13:10,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1211920717, now seen corresponding path program 1 times [2023-12-16 11:13:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:13:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777533276] [2023-12-16 11:13:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:10,087 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 11:13:10,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:13:10,089 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 11:13:10,108 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 11:13:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:10,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:13:10,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:13:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1624 proven. 0 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2023-12-16 11:13:10,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:13:10,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:13:10,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777533276] [2023-12-16 11:13:10,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777533276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:13:10,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:13:10,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:13:10,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131144589] [2023-12-16 11:13:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:13:10,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:13:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:13:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:13:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:13:10,680 INFO L87 Difference]: Start difference. First operand has 97 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-16 11:13:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:13:11,396 INFO L93 Difference]: Finished difference Result 191 states and 357 transitions. [2023-12-16 11:13:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:13:11,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 264 [2023-12-16 11:13:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:13:11,424 INFO L225 Difference]: With dead ends: 191 [2023-12-16 11:13:11,424 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 11:13:11,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 263 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 11:13:11,434 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 11:13:11,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 11:13:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 11:13:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-16 11:13:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 11:13:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 152 transitions. [2023-12-16 11:13:11,484 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 152 transitions. Word has length 264 [2023-12-16 11:13:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:13:11,484 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 152 transitions. [2023-12-16 11:13:11,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-16 11:13:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 152 transitions. [2023-12-16 11:13:11,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-16 11:13:11,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:13:11,489 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:11,502 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 11:13:11,702 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 11:13:11,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:13:11,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:13:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1912570617, now seen corresponding path program 1 times [2023-12-16 11:13:11,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:13:11,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151549532] [2023-12-16 11:13:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:11,707 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 11:13:11,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:13:11,709 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 11:13:11,718 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 11:13:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:12,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:13:12,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:13:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2022 proven. 63 refuted. 0 times theorem prover too weak. 1875 trivial. 0 not checked. [2023-12-16 11:13:12,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:13:12,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:13:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151549532] [2023-12-16 11:13:12,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151549532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:13:12,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [40966145] [2023-12-16 11:13:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:12,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:13:12,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:13:12,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:13:12,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-16 11:13:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:12,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:13:12,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:13:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2023-12-16 11:13:13,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:13:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [40966145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:13:13,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:13:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-16 11:13:13,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911925991] [2023-12-16 11:13:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:13:13,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:13:13,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:13:13,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:13:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:13:13,428 INFO L87 Difference]: Start difference. First operand 95 states and 152 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 11:13:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:13:14,963 INFO L93 Difference]: Finished difference Result 283 states and 454 transitions. [2023-12-16 11:13:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:13:14,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 264 [2023-12-16 11:13:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:13:14,967 INFO L225 Difference]: With dead ends: 283 [2023-12-16 11:13:14,967 INFO L226 Difference]: Without dead ends: 189 [2023-12-16 11:13:14,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:13:14,969 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 23 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:13:14,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 294 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 11:13:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-16 11:13:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2023-12-16 11:13:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-16 11:13:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 301 transitions. [2023-12-16 11:13:15,012 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 301 transitions. Word has length 264 [2023-12-16 11:13:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:13:15,013 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 301 transitions. [2023-12-16 11:13:15,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 11:13:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 301 transitions. [2023-12-16 11:13:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-16 11:13:15,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:13:15,016 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:15,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-16 11:13:15,245 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 11:13:15,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 11:13:15,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:13:15,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:13:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1914417659, now seen corresponding path program 1 times [2023-12-16 11:13:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:13:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104076203] [2023-12-16 11:13:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:15,447 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 11:13:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:13:15,454 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 11:13:15,466 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 11:13:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:15,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:13:15,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:13:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2022 proven. 63 refuted. 0 times theorem prover too weak. 1875 trivial. 0 not checked. [2023-12-16 11:13:16,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:13:16,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:13:16,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104076203] [2023-12-16 11:13:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104076203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:13:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458101215] [2023-12-16 11:13:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:16,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:13:16,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:13:16,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:13:16,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 11:13:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:16,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:13:16,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:13:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2023-12-16 11:13:16,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:13:16,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1458101215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:13:16,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:13:16,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-16 11:13:16,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534604136] [2023-12-16 11:13:16,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:13:16,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:13:16,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:13:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:13:16,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:13:16,919 INFO L87 Difference]: Start difference. First operand 187 states and 301 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 11:13:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:13:18,413 INFO L93 Difference]: Finished difference Result 557 states and 897 transitions. [2023-12-16 11:13:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:13:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 264 [2023-12-16 11:13:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:13:18,420 INFO L225 Difference]: With dead ends: 557 [2023-12-16 11:13:18,420 INFO L226 Difference]: Without dead ends: 371 [2023-12-16 11:13:18,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:13:18,422 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 144 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:13:18,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 421 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 11:13:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-16 11:13:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2023-12-16 11:13:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 184 states have (on average 1.2608695652173914) internal successors, (232), 184 states have internal predecessors, (232), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-16 11:13:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 592 transitions. [2023-12-16 11:13:18,490 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 592 transitions. Word has length 264 [2023-12-16 11:13:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:13:18,492 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 592 transitions. [2023-12-16 11:13:18,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 11:13:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 592 transitions. [2023-12-16 11:13:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-16 11:13:18,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:13:18,495 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:18,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 11:13:18,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-16 11:13:18,907 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:13:18,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:13:18,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:13:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1971675961, now seen corresponding path program 1 times [2023-12-16 11:13:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:13:18,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250933156] [2023-12-16 11:13:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:18,909 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 11:13:18,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:13:18,912 INFO L229 MonitoredProcess]: Starting monitored process 7 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 11:13:18,952 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 (7)] Waiting until timeout for monitored process [2023-12-16 11:13:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:19,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:13:19,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:13:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2022 proven. 63 refuted. 0 times theorem prover too weak. 1875 trivial. 0 not checked. [2023-12-16 11:13:19,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:13:19,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:13:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250933156] [2023-12-16 11:13:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250933156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:13:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [556390139] [2023-12-16 11:13:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:19,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:13:19,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:13:19,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:13:19,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-16 11:13:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:20,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:13:20,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:13:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1968 proven. 54 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2023-12-16 11:13:22,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:13:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2023-12-16 11:13:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [556390139] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:13:23,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 11:13:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-12-16 11:13:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79545821] [2023-12-16 11:13:23,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 11:13:23,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 11:13:23,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:13:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 11:13:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 11:13:23,248 INFO L87 Difference]: Start difference. First operand 369 states and 592 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-12-16 11:13:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:13:35,808 INFO L93 Difference]: Finished difference Result 989 states and 1540 transitions. [2023-12-16 11:13:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 11:13:35,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) Word has length 264 [2023-12-16 11:13:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:13:35,814 INFO L225 Difference]: With dead ends: 989 [2023-12-16 11:13:35,814 INFO L226 Difference]: Without dead ends: 621 [2023-12-16 11:13:35,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 11:13:35,816 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 483 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:13:35,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 360 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-16 11:13:35,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-16 11:13:35,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 405. [2023-12-16 11:13:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 212 states have (on average 1.2169811320754718) internal successors, (258), 212 states have internal predecessors, (258), 180 states have call successors, (180), 12 states have call predecessors, (180), 12 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-16 11:13:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 618 transitions. [2023-12-16 11:13:35,862 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 618 transitions. Word has length 264 [2023-12-16 11:13:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:13:35,863 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 618 transitions. [2023-12-16 11:13:35,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-12-16 11:13:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 618 transitions. [2023-12-16 11:13:35,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-16 11:13:35,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:13:35,865 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:35,876 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:13:36,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-16 11:13:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:13:36,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:13:36,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:13:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1812680286, now seen corresponding path program 1 times [2023-12-16 11:13:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:13:36,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093777936] [2023-12-16 11:13:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:13:36,286 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 11:13:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:13:36,289 INFO L229 MonitoredProcess]: Starting monitored process 9 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 11:13:36,289 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 (9)] Waiting until timeout for monitored process [2023-12-16 11:13:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:13:36,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 11:13:36,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:14:23,634 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 11:14:23,634 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:14:23,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:14:23,780 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 11:14:23,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 11:14:23,969 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 266 with TraceHistMax 45,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∨-8-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∧-2-1 context. [2023-12-16 11:14:23,973 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 11:14:23,975 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:14:23,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:14:23 BoogieIcfgContainer [2023-12-16 11:14:23,976 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:14:23,977 INFO L158 Benchmark]: Toolchain (without parser) took 77060.21ms. Allocated memory was 286.3MB in the beginning and 343.9MB in the end (delta: 57.7MB). Free memory was 233.6MB in the beginning and 253.3MB in the end (delta: -19.7MB). Peak memory consumption was 39.0MB. Max. memory is 8.0GB. [2023-12-16 11:14:23,977 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 215.0MB. Free memory is still 165.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:14:23,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.47ms. Allocated memory is still 286.3MB. Free memory was 233.2MB in the beginning and 216.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 11:14:23,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.51ms. Allocated memory is still 286.3MB. Free memory was 216.9MB in the beginning and 214.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 11:14:23,978 INFO L158 Benchmark]: Boogie Preprocessor took 56.66ms. Allocated memory is still 286.3MB. Free memory was 214.3MB in the beginning and 210.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 11:14:23,978 INFO L158 Benchmark]: RCFGBuilder took 2710.04ms. Allocated memory is still 286.3MB. Free memory was 210.1MB in the beginning and 183.3MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-16 11:14:23,978 INFO L158 Benchmark]: TraceAbstraction took 73982.37ms. Allocated memory was 286.3MB in the beginning and 343.9MB in the end (delta: 57.7MB). Free memory was 182.3MB in the beginning and 253.3MB in the end (delta: -71.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:14:23,981 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 215.0MB. Free memory is still 165.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.47ms. Allocated memory is still 286.3MB. Free memory was 233.2MB in the beginning and 216.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.51ms. Allocated memory is still 286.3MB. Free memory was 216.9MB in the beginning and 214.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.66ms. Allocated memory is still 286.3MB. Free memory was 214.3MB in the beginning and 210.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2710.04ms. Allocated memory is still 286.3MB. Free memory was 210.1MB in the beginning and 183.3MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 73982.37ms. Allocated memory was 286.3MB in the beginning and 343.9MB in the end (delta: 57.7MB). Free memory was 182.3MB in the beginning and 253.3MB in the end (delta: -71.1MB). 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 266 with TraceHistMax 45,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∨-8-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∧-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.9s, OverallIterations: 5, TraceHistogramMax: 45, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 651 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 650 mSDsluCounter, 1224 SdHoareTripleChecker+Invalid, 12.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 543 mSDsCounter, 695 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 452 IncrementalHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 695 mSolverCounterUnsat, 681 mSDtfsCounter, 452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2180 GetRequests, 2132 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=405occurred in iteration=4, InterpolantAutomatonStates: 40, 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, 220 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1848 NumberOfCodeBlocks, 1848 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2104 ConstructedInterpolants, 108 QuantifiedInterpolants, 6668 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2954 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 31383/31680 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