/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:57:23,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:57:23,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:57:23,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:57:23,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:57:23,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:57:23,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:57:23,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:57:23,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:57:23,243 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:57:23,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:57:23,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:57:23,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:57:23,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:57:23,246 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:57:23,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:57:23,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:57:23,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:57:23,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:57:23,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:57:23,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:57:23,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:57:23,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:57:23,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:57:23,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:57:23,248 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:57:23,248 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:57:23,248 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:57:23,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:57:23,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:57:23,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:57:23,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:57:23,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:57:23,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:57:23,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:57:23,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:57:23,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:57:23,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:57:23,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:57:23,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:57:23,251 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:57:23,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:57:23,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:57:23,251 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:57:23,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:57:23,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:57:23,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:57:23,449 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:57:23,449 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:57:23,450 INFO L431 ainManager$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-21.i [2023-12-15 19:57:24,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:57:24,723 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:57:24,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-12-15 19:57:24,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb3e01d55/87686d56a1fd453a8dc7e84a10c80085/FLAGabf6235a6 [2023-12-15 19:57:24,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb3e01d55/87686d56a1fd453a8dc7e84a10c80085 [2023-12-15 19:57:24,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:57:24,748 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:57:24,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:57:24,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:57:24,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:57:24,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:57:24" (1/1) ... [2023-12-15 19:57:24,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5e25ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:24, skipping insertion in model container [2023-12-15 19:57:24,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:57:24" (1/1) ... [2023-12-15 19:57:24,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:57:24,923 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-21.i[916,929] [2023-12-15 19:57:25,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:57:25,092 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:57:25,099 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-21.i[916,929] [2023-12-15 19:57:25,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:57:25,161 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:57:25,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25 WrapperNode [2023-12-15 19:57:25,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:57:25,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:57:25,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:57:25,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:57:25,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,259 INFO L138 Inliner]: procedures = 26, calls = 117, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 865 [2023-12-15 19:57:25,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:57:25,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:57:25,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:57:25,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:57:25,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,335 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]. [2023-12-15 19:57:25,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:57:25,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:57:25,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:57:25,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:57:25,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (1/1) ... [2023-12-15 19:57:25,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:57:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:25,414 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) [2023-12-15 19:57:25,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:57:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:57:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:57:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:57:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:57:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:57:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:57:25,582 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:57:25,584 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:57:26,253 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:57:26,287 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:57:26,288 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:57:26,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:57:26 BoogieIcfgContainer [2023-12-15 19:57:26,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:57:26,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:57:26,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:57:26,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:57:26,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:57:24" (1/3) ... [2023-12-15 19:57:26,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e31c69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:57:26, skipping insertion in model container [2023-12-15 19:57:26,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:57:25" (2/3) ... [2023-12-15 19:57:26,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e31c69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:57:26, skipping insertion in model container [2023-12-15 19:57:26,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:57:26" (3/3) ... [2023-12-15 19:57:26,294 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-12-15 19:57:26,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:57:26,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:57:26,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:57:26,345 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;@643c1799, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:57:26,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:57:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 218 states have (on average 1.6605504587155964) internal successors, (362), 219 states have internal predecessors, (362), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-15 19:57:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:26,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:26,376 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:26,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:26,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash 335338095, now seen corresponding path program 1 times [2023-12-15 19:57:26,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:26,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211785617] [2023-12-15 19:57:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:26,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:26,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211785617] [2023-12-15 19:57:26,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:57:26,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818692888] [2023-12-15 19:57:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:26,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:26,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:26,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:26,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:57:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:27,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:57:27,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 21218 trivial. 0 not checked. [2023-12-15 19:57:27,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818692888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:27,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:27,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:57:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601020368] [2023-12-15 19:57:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:27,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:57:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:57:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:57:27,177 INFO L87 Difference]: Start difference. First operand has 325 states, 218 states have (on average 1.6605504587155964) internal successors, (362), 219 states have internal predecessors, (362), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-15 19:57:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:27,243 INFO L93 Difference]: Finished difference Result 647 states and 1242 transitions. [2023-12-15 19:57:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:57:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) Word has length 665 [2023-12-15 19:57:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:27,265 INFO L225 Difference]: With dead ends: 647 [2023-12-15 19:57:27,265 INFO L226 Difference]: Without dead ends: 323 [2023-12-15 19:57:27,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:57:27,273 INFO L413 NwaCegarLoop]: 562 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, 562 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 [2023-12-15 19:57:27,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 562 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-15 19:57:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-12-15 19:57:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 217 states have (on average 1.6451612903225807) internal successors, (357), 217 states have internal predecessors, (357), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-15 19:57:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 565 transitions. [2023-12-15 19:57:27,348 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 565 transitions. Word has length 665 [2023-12-15 19:57:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:27,348 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 565 transitions. [2023-12-15 19:57:27,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-15 19:57:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 565 transitions. [2023-12-15 19:57:27,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:27,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:27,358 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:27,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:27,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:57:27,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:27,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash 742405155, now seen corresponding path program 1 times [2023-12-15 19:57:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363393359] [2023-12-15 19:57:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:27,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576083845] [2023-12-15 19:57:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:27,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:27,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:27,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:27,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:57:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:28,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:57:28,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:28,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:28,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363393359] [2023-12-15 19:57:28,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576083845] [2023-12-15 19:57:28,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576083845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:28,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:28,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008185612] [2023-12-15 19:57:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:28,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:57:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:57:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:57:28,626 INFO L87 Difference]: Start difference. First operand 323 states and 565 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:28,859 INFO L93 Difference]: Finished difference Result 1163 states and 2043 transitions. [2023-12-15 19:57:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:57:28,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-12-15 19:57:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:28,865 INFO L225 Difference]: With dead ends: 1163 [2023-12-15 19:57:28,865 INFO L226 Difference]: Without dead ends: 841 [2023-12-15 19:57:28,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:57:28,868 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 815 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:28,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1934 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:57:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-15 19:57:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 836. [2023-12-15 19:57:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 588 states have (on average 1.6751700680272108) internal successors, (985), 589 states have internal predecessors, (985), 244 states have call successors, (244), 3 states have call predecessors, (244), 3 states have return successors, (244), 243 states have call predecessors, (244), 244 states have call successors, (244) [2023-12-15 19:57:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1473 transitions. [2023-12-15 19:57:28,960 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1473 transitions. Word has length 665 [2023-12-15 19:57:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:28,962 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1473 transitions. [2023-12-15 19:57:28,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1473 transitions. [2023-12-15 19:57:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:28,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:28,973 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:28,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:29,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:57:29,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:29,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1581438817, now seen corresponding path program 1 times [2023-12-15 19:57:29,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:29,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924941833] [2023-12-15 19:57:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:29,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:29,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583930733] [2023-12-15 19:57:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:29,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:29,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:29,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:29,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:57:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:29,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:57:29,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:29,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:29,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:29,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924941833] [2023-12-15 19:57:29,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:29,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583930733] [2023-12-15 19:57:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583930733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:29,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:29,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:57:29,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311491352] [2023-12-15 19:57:29,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:29,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:57:29,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:29,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:57:29,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:57:29,638 INFO L87 Difference]: Start difference. First operand 836 states and 1473 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:30,021 INFO L93 Difference]: Finished difference Result 2778 states and 4926 transitions. [2023-12-15 19:57:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:57:30,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-12-15 19:57:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:30,033 INFO L225 Difference]: With dead ends: 2778 [2023-12-15 19:57:30,033 INFO L226 Difference]: Without dead ends: 1943 [2023-12-15 19:57:30,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:57:30,038 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 617 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 3559 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:30,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 3559 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:57:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-12-15 19:57:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1933. [2023-12-15 19:57:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1484 states have (on average 1.7243935309973046) internal successors, (2559), 1491 states have internal predecessors, (2559), 439 states have call successors, (439), 9 states have call predecessors, (439), 9 states have return successors, (439), 432 states have call predecessors, (439), 439 states have call successors, (439) [2023-12-15 19:57:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3437 transitions. [2023-12-15 19:57:30,172 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3437 transitions. Word has length 665 [2023-12-15 19:57:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:30,173 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 3437 transitions. [2023-12-15 19:57:30,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3437 transitions. [2023-12-15 19:57:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:30,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:30,179 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:30,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:30,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:30,387 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:30,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1658339615, now seen corresponding path program 1 times [2023-12-15 19:57:30,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:30,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102671332] [2023-12-15 19:57:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:30,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:30,429 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229216151] [2023-12-15 19:57:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:30,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:30,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:30,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:30,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:57:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:30,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:57:30,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:30,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:30,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:30,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102671332] [2023-12-15 19:57:30,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:30,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229216151] [2023-12-15 19:57:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229216151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:30,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:30,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242429692] [2023-12-15 19:57:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:30,777 INFO L87 Difference]: Start difference. First operand 1933 states and 3437 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:30,861 INFO L93 Difference]: Finished difference Result 4904 states and 8728 transitions. [2023-12-15 19:57:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:30,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-12-15 19:57:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:30,872 INFO L225 Difference]: With dead ends: 4904 [2023-12-15 19:57:30,872 INFO L226 Difference]: Without dead ends: 2972 [2023-12-15 19:57:30,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:30,883 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 305 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:30,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1325 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2023-12-15 19:57:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2507. [2023-12-15 19:57:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1962 states have (on average 1.7339449541284404) internal successors, (3402), 1972 states have internal predecessors, (3402), 532 states have call successors, (532), 12 states have call predecessors, (532), 12 states have return successors, (532), 522 states have call predecessors, (532), 532 states have call successors, (532) [2023-12-15 19:57:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4466 transitions. [2023-12-15 19:57:31,029 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4466 transitions. Word has length 665 [2023-12-15 19:57:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:31,030 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 4466 transitions. [2023-12-15 19:57:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4466 transitions. [2023-12-15 19:57:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:31,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:31,037 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:31,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:31,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:31,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:31,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:31,245 INFO L85 PathProgramCache]: Analyzing trace with hash 523600739, now seen corresponding path program 1 times [2023-12-15 19:57:31,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:31,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122206628] [2023-12-15 19:57:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:31,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:31,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770997607] [2023-12-15 19:57:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:31,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:31,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:31,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:31,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:57:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:31,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:57:31,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:32,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:32,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:32,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122206628] [2023-12-15 19:57:32,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770997607] [2023-12-15 19:57:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770997607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:32,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:32,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:32,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81158607] [2023-12-15 19:57:32,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:32,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:57:32,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:32,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:57:32,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:57:32,102 INFO L87 Difference]: Start difference. First operand 2507 states and 4466 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:32,243 INFO L93 Difference]: Finished difference Result 7531 states and 13420 transitions. [2023-12-15 19:57:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:57:32,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-12-15 19:57:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:32,266 INFO L225 Difference]: With dead ends: 7531 [2023-12-15 19:57:32,266 INFO L226 Difference]: Without dead ends: 5025 [2023-12-15 19:57:32,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:57:32,275 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 243 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:32,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1661 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2023-12-15 19:57:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 4975. [2023-12-15 19:57:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4975 states, 3886 states have (on average 1.725681935151827) internal successors, (6706), 3906 states have internal predecessors, (6706), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-12-15 19:57:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 8834 transitions. [2023-12-15 19:57:32,578 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 8834 transitions. Word has length 665 [2023-12-15 19:57:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:32,579 INFO L495 AbstractCegarLoop]: Abstraction has 4975 states and 8834 transitions. [2023-12-15 19:57:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 8834 transitions. [2023-12-15 19:57:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:32,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:32,586 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:32,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:32,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:32,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:32,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1182122595, now seen corresponding path program 1 times [2023-12-15 19:57:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034692995] [2023-12-15 19:57:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:32,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:32,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193569845] [2023-12-15 19:57:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:32,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:32,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:32,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:57:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:33,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:33,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:33,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:33,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:33,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034692995] [2023-12-15 19:57:33,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:33,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193569845] [2023-12-15 19:57:33,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193569845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:33,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:33,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:33,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414027183] [2023-12-15 19:57:33,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:33,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:33,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:33,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:33,148 INFO L87 Difference]: Start difference. First operand 4975 states and 8834 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:33,380 INFO L93 Difference]: Finished difference Result 12731 states and 22258 transitions. [2023-12-15 19:57:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:33,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-12-15 19:57:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:33,416 INFO L225 Difference]: With dead ends: 12731 [2023-12-15 19:57:33,416 INFO L226 Difference]: Without dead ends: 7757 [2023-12-15 19:57:33,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:33,430 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 387 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:33,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1146 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7757 states. [2023-12-15 19:57:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7757 to 4999. [2023-12-15 19:57:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 3910 states have (on average 1.721227621483376) internal successors, (6730), 3930 states have internal predecessors, (6730), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-12-15 19:57:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 8858 transitions. [2023-12-15 19:57:33,812 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 8858 transitions. Word has length 665 [2023-12-15 19:57:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:33,812 INFO L495 AbstractCegarLoop]: Abstraction has 4999 states and 8858 transitions. [2023-12-15 19:57:33,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 8858 transitions. [2023-12-15 19:57:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:33,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:33,820 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:33,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:34,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:34,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:34,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash -812022111, now seen corresponding path program 1 times [2023-12-15 19:57:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900452564] [2023-12-15 19:57:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:34,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:34,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452546287] [2023-12-15 19:57:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:34,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:34,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:34,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:34,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:57:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:34,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:34,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:34,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:34,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:34,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900452564] [2023-12-15 19:57:34,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452546287] [2023-12-15 19:57:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452546287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:34,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:34,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:34,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201604974] [2023-12-15 19:57:34,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:34,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:34,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:34,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:34,396 INFO L87 Difference]: Start difference. First operand 4999 states and 8858 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:34,662 INFO L93 Difference]: Finished difference Result 14935 states and 26452 transitions. [2023-12-15 19:57:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:34,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-12-15 19:57:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:34,695 INFO L225 Difference]: With dead ends: 14935 [2023-12-15 19:57:34,695 INFO L226 Difference]: Without dead ends: 9937 [2023-12-15 19:57:34,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:34,709 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 553 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:34,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1636 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9937 states. [2023-12-15 19:57:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9937 to 9935. [2023-12-15 19:57:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 7758 states have (on average 1.7107501933488012) internal successors, (13272), 7798 states have internal predecessors, (13272), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-12-15 19:57:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 17528 transitions. [2023-12-15 19:57:35,298 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 17528 transitions. Word has length 665 [2023-12-15 19:57:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:35,299 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 17528 transitions. [2023-12-15 19:57:35,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 17528 transitions. [2023-12-15 19:57:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-15 19:57:35,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:35,311 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:35,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:35,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:35,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:35,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash 922082339, now seen corresponding path program 1 times [2023-12-15 19:57:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:35,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167797298] [2023-12-15 19:57:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:35,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:35,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:35,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174227679] [2023-12-15 19:57:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:35,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:35,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:35,567 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:35,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:57:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:35,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:57:35,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:35,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:35,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167797298] [2023-12-15 19:57:35,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:35,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174227679] [2023-12-15 19:57:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174227679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:57:35,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721610731] [2023-12-15 19:57:35,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:57:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:35,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:57:35,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:57:35,926 INFO L87 Difference]: Start difference. First operand 9935 states and 17528 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:36,101 INFO L93 Difference]: Finished difference Result 14873 states and 26265 transitions. [2023-12-15 19:57:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:57:36,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-12-15 19:57:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:36,115 INFO L225 Difference]: With dead ends: 14873 [2023-12-15 19:57:36,115 INFO L226 Difference]: Without dead ends: 4939 [2023-12-15 19:57:36,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:57:36,137 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 553 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:36,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1085 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2023-12-15 19:57:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4939. [2023-12-15 19:57:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 3850 states have (on average 1.6919480519480519) internal successors, (6514), 3870 states have internal predecessors, (6514), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-12-15 19:57:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 8642 transitions. [2023-12-15 19:57:36,424 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 8642 transitions. Word has length 665 [2023-12-15 19:57:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:36,424 INFO L495 AbstractCegarLoop]: Abstraction has 4939 states and 8642 transitions. [2023-12-15 19:57:36,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 8642 transitions. [2023-12-15 19:57:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-15 19:57:36,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:36,432 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:36,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:36,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:57:36,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:36,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2057842162, now seen corresponding path program 1 times [2023-12-15 19:57:36,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:36,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716370237] [2023-12-15 19:57:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:36,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:36,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:36,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446405700] [2023-12-15 19:57:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:36,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:36,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:36,678 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:36,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:57:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:36,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:36,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:37,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:37,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716370237] [2023-12-15 19:57:37,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446405700] [2023-12-15 19:57:37,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446405700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:37,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848125086] [2023-12-15 19:57:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:37,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:37,025 INFO L87 Difference]: Start difference. First operand 4939 states and 8642 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:37,295 INFO L93 Difference]: Finished difference Result 14815 states and 25924 transitions. [2023-12-15 19:57:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:37,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-12-15 19:57:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:37,321 INFO L225 Difference]: With dead ends: 14815 [2023-12-15 19:57:37,321 INFO L226 Difference]: Without dead ends: 9877 [2023-12-15 19:57:37,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:37,334 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 538 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:37,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1137 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9877 states. [2023-12-15 19:57:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9877 to 9875. [2023-12-15 19:57:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9875 states, 7698 states have (on average 1.6858924395947) internal successors, (12978), 7738 states have internal predecessors, (12978), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-12-15 19:57:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9875 states to 9875 states and 17234 transitions. [2023-12-15 19:57:37,920 INFO L78 Accepts]: Start accepts. Automaton has 9875 states and 17234 transitions. Word has length 667 [2023-12-15 19:57:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:37,921 INFO L495 AbstractCegarLoop]: Abstraction has 9875 states and 17234 transitions. [2023-12-15 19:57:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 9875 states and 17234 transitions. [2023-12-15 19:57:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-15 19:57:37,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:37,932 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:37,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:38,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:38,139 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:38,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1339731856, now seen corresponding path program 1 times [2023-12-15 19:57:38,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:38,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661458088] [2023-12-15 19:57:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:38,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:38,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:38,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534681301] [2023-12-15 19:57:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:38,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:38,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:38,188 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:38,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:57:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:38,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:38,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:38,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:38,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:38,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661458088] [2023-12-15 19:57:38,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:38,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534681301] [2023-12-15 19:57:38,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534681301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:38,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:38,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201982185] [2023-12-15 19:57:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:38,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:38,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:38,553 INFO L87 Difference]: Start difference. First operand 9875 states and 17234 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:38,961 INFO L93 Difference]: Finished difference Result 25319 states and 44272 transitions. [2023-12-15 19:57:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:38,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-12-15 19:57:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:39,000 INFO L225 Difference]: With dead ends: 25319 [2023-12-15 19:57:39,000 INFO L226 Difference]: Without dead ends: 15445 [2023-12-15 19:57:39,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:39,020 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 521 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:39,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1153 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15445 states. [2023-12-15 19:57:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15445 to 15443. [2023-12-15 19:57:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15443 states, 12178 states have (on average 1.684184595171621) internal successors, (20510), 12238 states have internal predecessors, (20510), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-12-15 19:57:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 26894 transitions. [2023-12-15 19:57:39,824 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 26894 transitions. Word has length 667 [2023-12-15 19:57:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:39,825 INFO L495 AbstractCegarLoop]: Abstraction has 15443 states and 26894 transitions. [2023-12-15 19:57:39,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 26894 transitions. [2023-12-15 19:57:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-15 19:57:39,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:39,838 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:39,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:57:40,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:40,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1574016148, now seen corresponding path program 1 times [2023-12-15 19:57:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:40,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357039248] [2023-12-15 19:57:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:40,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:40,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:40,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982821826] [2023-12-15 19:57:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:40,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:40,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:40,100 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:40,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:57:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:40,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:40,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:40,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:40,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357039248] [2023-12-15 19:57:40,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982821826] [2023-12-15 19:57:40,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982821826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:40,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:40,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449029992] [2023-12-15 19:57:40,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:40,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:40,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:40,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:40,452 INFO L87 Difference]: Start difference. First operand 15443 states and 26894 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:40,961 INFO L93 Difference]: Finished difference Result 30885 states and 53787 transitions. [2023-12-15 19:57:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:40,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-12-15 19:57:40,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:41,002 INFO L225 Difference]: With dead ends: 30885 [2023-12-15 19:57:41,002 INFO L226 Difference]: Without dead ends: 15443 [2023-12-15 19:57:41,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:41,029 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 534 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:41,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 548 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15443 states. [2023-12-15 19:57:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15443 to 15443. [2023-12-15 19:57:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15443 states, 12178 states have (on average 1.672359993430777) internal successors, (20366), 12238 states have internal predecessors, (20366), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-12-15 19:57:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 26750 transitions. [2023-12-15 19:57:41,941 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 26750 transitions. Word has length 667 [2023-12-15 19:57:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:41,942 INFO L495 AbstractCegarLoop]: Abstraction has 15443 states and 26750 transitions. [2023-12-15 19:57:41,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 26750 transitions. [2023-12-15 19:57:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-15 19:57:41,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:41,955 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:41,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:42,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:57:42,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:42,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1792870866, now seen corresponding path program 1 times [2023-12-15 19:57:42,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719496736] [2023-12-15 19:57:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:42,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:42,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709831983] [2023-12-15 19:57:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:42,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:42,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:42,203 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:42,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:57:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:42,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:42,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:42,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:42,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:42,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719496736] [2023-12-15 19:57:42,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:42,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709831983] [2023-12-15 19:57:42,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709831983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:42,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:42,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459110990] [2023-12-15 19:57:42,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:42,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:42,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:42,538 INFO L87 Difference]: Start difference. First operand 15443 states and 26750 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:43,302 INFO L93 Difference]: Finished difference Result 38537 states and 66070 transitions. [2023-12-15 19:57:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-12-15 19:57:43,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:43,364 INFO L225 Difference]: With dead ends: 38537 [2023-12-15 19:57:43,364 INFO L226 Difference]: Without dead ends: 23095 [2023-12-15 19:57:43,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:43,394 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 183 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:43,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1094 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23095 states. [2023-12-15 19:57:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23095 to 23081. [2023-12-15 19:57:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23081 states, 17296 states have (on average 1.616327474560592) internal successors, (27956), 17428 states have internal predecessors, (27956), 5640 states have call successors, (5640), 144 states have call predecessors, (5640), 144 states have return successors, (5640), 5508 states have call predecessors, (5640), 5640 states have call successors, (5640) [2023-12-15 19:57:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23081 states to 23081 states and 39236 transitions. [2023-12-15 19:57:44,850 INFO L78 Accepts]: Start accepts. Automaton has 23081 states and 39236 transitions. Word has length 667 [2023-12-15 19:57:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:44,851 INFO L495 AbstractCegarLoop]: Abstraction has 23081 states and 39236 transitions. [2023-12-15 19:57:44,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 23081 states and 39236 transitions. [2023-12-15 19:57:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-15 19:57:44,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:44,868 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:44,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:45,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:57:45,076 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:45,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1652322256, now seen corresponding path program 1 times [2023-12-15 19:57:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:45,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049345306] [2023-12-15 19:57:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:45,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:45,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:45,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289887280] [2023-12-15 19:57:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:45,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:45,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:45,126 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:45,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:57:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:45,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:57:45,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:47,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049345306] [2023-12-15 19:57:47,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289887280] [2023-12-15 19:57:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289887280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:47,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:47,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:57:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300285870] [2023-12-15 19:57:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:47,141 INFO L87 Difference]: Start difference. First operand 23081 states and 39236 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:48,405 INFO L93 Difference]: Finished difference Result 55887 states and 95032 transitions. [2023-12-15 19:57:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:48,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-12-15 19:57:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:48,488 INFO L225 Difference]: With dead ends: 55887 [2023-12-15 19:57:48,489 INFO L226 Difference]: Without dead ends: 32807 [2023-12-15 19:57:48,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:48,534 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 226 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:48,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1122 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:57:48,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32807 states. [2023-12-15 19:57:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32807 to 32805. [2023-12-15 19:57:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32805 states, 24548 states have (on average 1.6133289881049373) internal successors, (39604), 24740 states have internal predecessors, (39604), 8048 states have call successors, (8048), 208 states have call predecessors, (8048), 208 states have return successors, (8048), 7856 states have call predecessors, (8048), 8048 states have call successors, (8048) [2023-12-15 19:57:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32805 states to 32805 states and 55700 transitions. [2023-12-15 19:57:50,353 INFO L78 Accepts]: Start accepts. Automaton has 32805 states and 55700 transitions. Word has length 667 [2023-12-15 19:57:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:50,353 INFO L495 AbstractCegarLoop]: Abstraction has 32805 states and 55700 transitions. [2023-12-15 19:57:50,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 32805 states and 55700 transitions. [2023-12-15 19:57:50,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-15 19:57:50,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:50,373 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:50,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:57:50,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:50,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:50,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1625357992, now seen corresponding path program 1 times [2023-12-15 19:57:50,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:50,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028804556] [2023-12-15 19:57:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:50,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:50,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648264096] [2023-12-15 19:57:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:50,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:50,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:50,619 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:50,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:57:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:50,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:57:50,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:51,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028804556] [2023-12-15 19:57:51,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648264096] [2023-12-15 19:57:51,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648264096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:51,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:51,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:57:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991517951] [2023-12-15 19:57:51,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:57:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:57:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:57:51,011 INFO L87 Difference]: Start difference. First operand 32805 states and 55700 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:54,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:54,855 INFO L93 Difference]: Finished difference Result 131325 states and 222840 transitions. [2023-12-15 19:57:54,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:57:54,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 668 [2023-12-15 19:57:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:55,093 INFO L225 Difference]: With dead ends: 131325 [2023-12-15 19:57:55,093 INFO L226 Difference]: Without dead ends: 98521 [2023-12-15 19:57:55,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:57:55,312 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1159 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:55,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 2382 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:57:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98521 states. [2023-12-15 19:57:58,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98521 to 66955. [2023-12-15 19:57:58,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66955 states, 52666 states have (on average 1.646033494094862) internal successors, (86690), 53066 states have internal predecessors, (86690), 13872 states have call successors, (13872), 416 states have call predecessors, (13872), 416 states have return successors, (13872), 13472 states have call predecessors, (13872), 13872 states have call successors, (13872) [2023-12-15 19:57:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66955 states to 66955 states and 114434 transitions. [2023-12-15 19:57:59,049 INFO L78 Accepts]: Start accepts. Automaton has 66955 states and 114434 transitions. Word has length 668 [2023-12-15 19:57:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:59,050 INFO L495 AbstractCegarLoop]: Abstraction has 66955 states and 114434 transitions. [2023-12-15 19:57:59,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:57:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 66955 states and 114434 transitions. [2023-12-15 19:57:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-15 19:57:59,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:59,087 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:59,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:59,288 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:59,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 482855526, now seen corresponding path program 1 times [2023-12-15 19:57:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:59,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654546804] [2023-12-15 19:57:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:59,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:59,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910654510] [2023-12-15 19:57:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:59,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:59,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:59,329 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:59,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:57:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:59,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:59,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:57:59,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:59,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:59,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654546804] [2023-12-15 19:57:59,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:59,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910654510] [2023-12-15 19:57:59,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910654510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:59,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:59,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:59,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779099582] [2023-12-15 19:57:59,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:59,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:59,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:59,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:59,715 INFO L87 Difference]: Start difference. First operand 66955 states and 114434 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:58:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:04,143 INFO L93 Difference]: Finished difference Result 185403 states and 316718 transitions. [2023-12-15 19:58:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 668 [2023-12-15 19:58:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:04,441 INFO L225 Difference]: With dead ends: 185403 [2023-12-15 19:58:04,441 INFO L226 Difference]: Without dead ends: 118449 [2023-12-15 19:58:04,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:04,539 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 307 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:04,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1420 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118449 states. [2023-12-15 19:58:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118449 to 118021. [2023-12-15 19:58:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118021 states, 94164 states have (on average 1.6530946009090524) internal successors, (155662), 94980 states have internal predecessors, (155662), 23024 states have call successors, (23024), 832 states have call predecessors, (23024), 832 states have return successors, (23024), 22208 states have call predecessors, (23024), 23024 states have call successors, (23024) [2023-12-15 19:58:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118021 states to 118021 states and 201710 transitions. [2023-12-15 19:58:10,571 INFO L78 Accepts]: Start accepts. Automaton has 118021 states and 201710 transitions. Word has length 668 [2023-12-15 19:58:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:10,572 INFO L495 AbstractCegarLoop]: Abstraction has 118021 states and 201710 transitions. [2023-12-15 19:58:10,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:58:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 118021 states and 201710 transitions. [2023-12-15 19:58:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-15 19:58:10,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:10,618 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:10,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 19:58:10,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:58:10,826 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:10,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash -337668885, now seen corresponding path program 1 times [2023-12-15 19:58:10,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:10,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334098212] [2023-12-15 19:58:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:10,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:10,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:10,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432854687] [2023-12-15 19:58:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:10,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:10,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:10,860 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:10,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 19:58:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:11,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:58:11,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-15 19:58:11,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:11,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:11,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334098212] [2023-12-15 19:58:11,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:11,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432854687] [2023-12-15 19:58:11,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432854687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:11,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:11,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:11,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058797243] [2023-12-15 19:58:11,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:11,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:58:11,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:58:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:58:11,791 INFO L87 Difference]: Start difference. First operand 118021 states and 201710 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:58:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:16,446 INFO L93 Difference]: Finished difference Result 236363 states and 404060 transitions. [2023-12-15 19:58:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:58:16,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 668 [2023-12-15 19:58:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:16,746 INFO L225 Difference]: With dead ends: 236363 [2023-12-15 19:58:16,746 INFO L226 Difference]: Without dead ends: 118343 [2023-12-15 19:58:17,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:58:17,145 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 223 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:17,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1628 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118343 states. [2023-12-15 19:58:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118343 to 117765. [2023-12-15 19:58:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117765 states, 93908 states have (on average 1.6507858755377605) internal successors, (155022), 94724 states have internal predecessors, (155022), 23024 states have call successors, (23024), 832 states have call predecessors, (23024), 832 states have return successors, (23024), 22208 states have call predecessors, (23024), 23024 states have call successors, (23024) [2023-12-15 19:58:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117765 states to 117765 states and 201070 transitions. [2023-12-15 19:58:23,005 INFO L78 Accepts]: Start accepts. Automaton has 117765 states and 201070 transitions. Word has length 668 [2023-12-15 19:58:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:23,005 INFO L495 AbstractCegarLoop]: Abstraction has 117765 states and 201070 transitions. [2023-12-15 19:58:23,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-15 19:58:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 117765 states and 201070 transitions. [2023-12-15 19:58:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-15 19:58:23,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:23,057 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:23,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:23,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 19:58:23,265 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:23,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash 320852971, now seen corresponding path program 1 times [2023-12-15 19:58:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:23,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087196606] [2023-12-15 19:58:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:23,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:23,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800229185] [2023-12-15 19:58:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:23,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:23,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:23,334 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:23,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 19:58:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:23,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:58:23,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 19:58:24,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:58:24,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-15 19:58:24,513 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:58:24,513 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 [2023-12-15 19:58:24,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 19:58:24,703 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 669 with TraceHistMax 104,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-15 19:58:24,707 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:24,709 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:58:24,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:58:24 BoogieIcfgContainer [2023-12-15 19:58:24,710 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:58:24,711 INFO L158 Benchmark]: Toolchain (without parser) took 59963.18ms. Allocated memory was 300.9MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 246.7MB in the beginning and 4.5GB in the end (delta: -4.2GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 19:58:24,711 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 203.4MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:58:24,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.68ms. Allocated memory is still 300.9MB. Free memory was 246.7MB in the beginning and 213.7MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-15 19:58:24,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.04ms. Allocated memory is still 300.9MB. Free memory was 213.2MB in the beginning and 199.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 19:58:24,711 INFO L158 Benchmark]: Boogie Preprocessor took 127.38ms. Allocated memory is still 300.9MB. Free memory was 199.0MB in the beginning and 244.4MB in the end (delta: -45.4MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2023-12-15 19:58:24,712 INFO L158 Benchmark]: RCFGBuilder took 899.75ms. Allocated memory is still 300.9MB. Free memory was 244.4MB in the beginning and 146.9MB in the end (delta: 97.5MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. [2023-12-15 19:58:24,712 INFO L158 Benchmark]: TraceAbstraction took 58420.90ms. Allocated memory was 300.9MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 146.3MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 19:58:24,713 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 203.4MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.68ms. Allocated memory is still 300.9MB. Free memory was 246.7MB in the beginning and 213.7MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 97.04ms. Allocated memory is still 300.9MB. Free memory was 213.2MB in the beginning and 199.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 127.38ms. Allocated memory is still 300.9MB. Free memory was 199.0MB in the beginning and 244.4MB in the end (delta: -45.4MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * RCFGBuilder took 899.75ms. Allocated memory is still 300.9MB. Free memory was 244.4MB in the beginning and 146.9MB in the end (delta: 97.5MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. * TraceAbstraction took 58420.90ms. Allocated memory was 300.9MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 146.3MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 1.8GB. 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 669 with TraceHistMax 104,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 325 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.4s, OverallIterations: 17, TraceHistogramMax: 104, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7164 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7164 mSDsluCounter, 23392 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12692 mSDsCounter, 458 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1267 IncrementalHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 458 mSolverCounterUnsat, 10700 mSDtfsCounter, 1267 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10653 GetRequests, 10622 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118021occurred in iteration=15, 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: 23.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 35882 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 11324 NumberOfCodeBlocks, 11324 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 10643 ConstructedInterpolants, 0 QuantifiedInterpolants, 22670 SizeOfPredicates, 17 NumberOfNonLiveVariables, 24478 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 342784/342784 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