/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-100_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:28:43,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:28:43,130 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:28:43,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:28:43,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:28:43,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:28:43,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:28:43,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:28:43,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:28:43,178 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:28:43,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:28:43,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:28:43,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:28:43,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:28:43,181 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:28:43,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:28:43,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:28:43,182 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:28:43,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:28:43,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:28:43,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:28:43,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:28:43,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:28:43,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:28:43,184 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:28:43,185 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:28:43,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:28:43,185 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:28:43,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:28:43,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:28:43,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:28:43,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:28:43,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:28:43,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:28:43,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:28:43,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:28:43,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:28:43,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:28:43,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:28:43,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:28:43,190 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:28:43,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:28:43,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:28:43,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:28:43,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:28:43,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:28:43,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:28:43,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:28:43,451 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:28:43,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-81.i [2023-12-19 06:28:44,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:28:44,916 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:28:44,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-81.i [2023-12-19 06:28:44,927 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3379dcba4/4eb8ba740e3c4200b28bbcf36a7d8fc2/FLAG1950e02e5 [2023-12-19 06:28:44,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3379dcba4/4eb8ba740e3c4200b28bbcf36a7d8fc2 [2023-12-19 06:28:44,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:28:44,944 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:28:44,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:28:44,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:28:44,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:28:44,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:28:44" (1/1) ... [2023-12-19 06:28:44,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b50e056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:44, skipping insertion in model container [2023-12-19 06:28:44,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:28:44" (1/1) ... [2023-12-19 06:28:44,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:28:45,113 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-100_file-81.i[916,929] [2023-12-19 06:28:45,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:28:45,246 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:28:45,256 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-100_file-81.i[916,929] [2023-12-19 06:28:45,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:28:45,341 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:28:45,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45 WrapperNode [2023-12-19 06:28:45,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:28:45,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:28:45,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:28:45,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:28:45,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,409 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 369 [2023-12-19 06:28:45,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:28:45,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:28:45,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:28:45,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:28:45,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,451 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]. [2023-12-19 06:28:45,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:28:45,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:28:45,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:28:45,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:28:45,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (1/1) ... [2023-12-19 06:28:45,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:28:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:28:45,561 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) [2023-12-19 06:28:45,577 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 [2023-12-19 06:28:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:28:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:28:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:28:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:28:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:28:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:28:45,721 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:28:45,722 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:28:46,310 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:28:46,351 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:28:46,352 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:28:46,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:28:46 BoogieIcfgContainer [2023-12-19 06:28:46,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:28:46,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:28:46,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:28:46,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:28:46,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:28:44" (1/3) ... [2023-12-19 06:28:46,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4336b7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:28:46, skipping insertion in model container [2023-12-19 06:28:46,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:28:45" (2/3) ... [2023-12-19 06:28:46,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4336b7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:28:46, skipping insertion in model container [2023-12-19 06:28:46,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:28:46" (3/3) ... [2023-12-19 06:28:46,361 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-81.i [2023-12-19 06:28:46,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:28:46,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:28:46,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:28:46,449 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;@b55f9be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:28:46,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:28:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 83 states have internal predecessors, (117), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 06:28:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-19 06:28:46,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:28:46,476 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:28:46,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:28:46,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:28:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1147325826, now seen corresponding path program 1 times [2023-12-19 06:28:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:28:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237416167] [2023-12-19 06:28:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:28:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:28:46,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:28:46,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237416167] [2023-12-19 06:28:46,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:28:46,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112031128] [2023-12-19 06:28:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:46,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:28:46,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:28:46,806 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) [2023-12-19 06:28:46,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:28:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:28:47,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:28:47,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:28:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2023-12-19 06:28:47,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:28:47,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112031128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:28:47,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:28:47,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:28:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860735375] [2023-12-19 06:28:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:28:47,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:28:47,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:28:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:28:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:28:47,216 INFO L87 Difference]: Start difference. First operand has 151 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 83 states have internal predecessors, (117), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-19 06:28:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:28:47,290 INFO L93 Difference]: Finished difference Result 298 states and 560 transitions. [2023-12-19 06:28:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:28:47,293 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 393 [2023-12-19 06:28:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:28:47,302 INFO L225 Difference]: With dead ends: 298 [2023-12-19 06:28:47,303 INFO L226 Difference]: Without dead ends: 148 [2023-12-19 06:28:47,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:28:47,309 INFO L413 NwaCegarLoop]: 236 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, 236 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 [2023-12-19 06:28:47,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 236 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:28:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-19 06:28:47,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-12-19 06:28:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 06:28:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 239 transitions. [2023-12-19 06:28:47,389 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 239 transitions. Word has length 393 [2023-12-19 06:28:47,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:28:47,390 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 239 transitions. [2023-12-19 06:28:47,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-19 06:28:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 239 transitions. [2023-12-19 06:28:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-19 06:28:47,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:28:47,432 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:28:47,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 06:28:47,641 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 [2023-12-19 06:28:47,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:28:47,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:28:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1799905782, now seen corresponding path program 1 times [2023-12-19 06:28:47,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:28:47,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979839185] [2023-12-19 06:28:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:28:47,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:28:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246870335] [2023-12-19 06:28:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:47,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:28:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:28:47,759 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) [2023-12-19 06:28:47,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:28:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:28:47,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:28:47,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:28:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 3165 proven. 45 refuted. 0 times theorem prover too weak. 5370 trivial. 0 not checked. [2023-12-19 06:28:48,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:28:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 150 proven. 45 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 06:28:48,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:28:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979839185] [2023-12-19 06:28:48,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:28:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246870335] [2023-12-19 06:28:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246870335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:28:48,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:28:48,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:28:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650998454] [2023-12-19 06:28:48,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:28:48,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:28:48,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:28:48,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:28:48,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:28:48,490 INFO L87 Difference]: Start difference. First operand 148 states and 239 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-19 06:28:49,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:28:49,217 INFO L93 Difference]: Finished difference Result 382 states and 613 transitions. [2023-12-19 06:28:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:28:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 393 [2023-12-19 06:28:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:28:49,222 INFO L225 Difference]: With dead ends: 382 [2023-12-19 06:28:49,222 INFO L226 Difference]: Without dead ends: 235 [2023-12-19 06:28:49,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 778 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:28:49,224 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 221 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:28:49,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 564 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 06:28:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-19 06:28:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 230. [2023-12-19 06:28:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 112 states have internal predecessors, (137), 116 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-19 06:28:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 369 transitions. [2023-12-19 06:28:49,261 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 369 transitions. Word has length 393 [2023-12-19 06:28:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:28:49,263 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 369 transitions. [2023-12-19 06:28:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-19 06:28:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 369 transitions. [2023-12-19 06:28:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-12-19 06:28:49,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:28:49,267 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:28:49,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:28:49,479 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 [2023-12-19 06:28:49,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:28:49,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:28:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -196427699, now seen corresponding path program 1 times [2023-12-19 06:28:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:28:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31200260] [2023-12-19 06:28:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:28:49,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:28:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605070500] [2023-12-19 06:28:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:49,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:28:49,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:28:49,572 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) [2023-12-19 06:28:49,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:28:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:28:49,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:28:49,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:28:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2130 proven. 357 refuted. 0 times theorem prover too weak. 6093 trivial. 0 not checked. [2023-12-19 06:28:50,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:28:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 27 proven. 360 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2023-12-19 06:28:51,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:28:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31200260] [2023-12-19 06:28:51,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:28:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605070500] [2023-12-19 06:28:51,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605070500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:28:51,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:28:51,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 06:28:51,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98662197] [2023-12-19 06:28:51,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:28:51,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 06:28:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:28:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 06:28:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-19 06:28:51,544 INFO L87 Difference]: Start difference. First operand 230 states and 369 transitions. Second operand has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 5 states have call successors, (131), 3 states have call predecessors, (131), 7 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2023-12-19 06:28:52,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:28:52,571 INFO L93 Difference]: Finished difference Result 492 states and 746 transitions. [2023-12-19 06:28:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 06:28:52,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 5 states have call successors, (131), 3 states have call predecessors, (131), 7 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) Word has length 394 [2023-12-19 06:28:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:28:52,577 INFO L225 Difference]: With dead ends: 492 [2023-12-19 06:28:52,577 INFO L226 Difference]: Without dead ends: 341 [2023-12-19 06:28:52,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=834, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:28:52,579 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 215 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:28:52,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 677 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:28:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-12-19 06:28:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 289. [2023-12-19 06:28:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 153 states have (on average 1.2091503267973855) internal successors, (185), 155 states have internal predecessors, (185), 126 states have call successors, (126), 9 states have call predecessors, (126), 9 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-19 06:28:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 437 transitions. [2023-12-19 06:28:52,638 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 437 transitions. Word has length 394 [2023-12-19 06:28:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:28:52,639 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 437 transitions. [2023-12-19 06:28:52,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 16 states have internal predecessors, (141), 5 states have call successors, (131), 3 states have call predecessors, (131), 7 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2023-12-19 06:28:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 437 transitions. [2023-12-19 06:28:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-19 06:28:52,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:28:52,644 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:28:52,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:28:52,851 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 [2023-12-19 06:28:52,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:28:52,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:28:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash -638956426, now seen corresponding path program 1 times [2023-12-19 06:28:52,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:28:52,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609577746] [2023-12-19 06:28:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:28:52,917 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:28:52,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888556186] [2023-12-19 06:28:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:52,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:28:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:28:52,919 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) [2023-12-19 06:28:52,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:28:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:28:53,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 06:28:53,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:28:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:28:53,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:28:53,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:28:53,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609577746] [2023-12-19 06:28:53,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:28:53,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888556186] [2023-12-19 06:28:53,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888556186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:28:53,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:28:53,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:28:53,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481473094] [2023-12-19 06:28:53,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:28:53,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:28:53,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:28:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:28:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:28:53,182 INFO L87 Difference]: Start difference. First operand 289 states and 437 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:28:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:28:53,257 INFO L93 Difference]: Finished difference Result 525 states and 777 transitions. [2023-12-19 06:28:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:28:53,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 395 [2023-12-19 06:28:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:28:53,261 INFO L225 Difference]: With dead ends: 525 [2023-12-19 06:28:53,261 INFO L226 Difference]: Without dead ends: 327 [2023-12-19 06:28:53,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:28:53,263 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 58 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:28:53,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 653 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:28:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-19 06:28:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2023-12-19 06:28:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 180 states have (on average 1.1833333333333333) internal successors, (213), 183 states have internal predecessors, (213), 130 states have call successors, (130), 13 states have call predecessors, (130), 13 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-19 06:28:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 473 transitions. [2023-12-19 06:28:53,312 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 473 transitions. Word has length 395 [2023-12-19 06:28:53,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:28:53,313 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 473 transitions. [2023-12-19 06:28:53,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:28:53,313 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 473 transitions. [2023-12-19 06:28:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-19 06:28:53,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:28:53,316 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:28:53,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:28:53,525 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 [2023-12-19 06:28:53,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:28:53,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:28:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash 41101944, now seen corresponding path program 1 times [2023-12-19 06:28:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:28:53,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935173043] [2023-12-19 06:28:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:53,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:28:53,570 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:28:53,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222309691] [2023-12-19 06:28:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:53,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:28:53,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:28:53,572 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) [2023-12-19 06:28:53,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:28:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:28:53,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:28:53,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:28:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 1905 proven. 171 refuted. 0 times theorem prover too weak. 6504 trivial. 0 not checked. [2023-12-19 06:28:54,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:28:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 24 proven. 171 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 06:28:54,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:28:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935173043] [2023-12-19 06:28:54,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:28:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222309691] [2023-12-19 06:28:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222309691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:28:54,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:28:54,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 06:28:54,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455600799] [2023-12-19 06:28:54,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:28:54,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:28:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:28:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:28:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:28:54,613 INFO L87 Difference]: Start difference. First operand 324 states and 473 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 3 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2023-12-19 06:28:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:28:55,567 INFO L93 Difference]: Finished difference Result 649 states and 933 transitions. [2023-12-19 06:28:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 06:28:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 3 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) Word has length 395 [2023-12-19 06:28:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:28:55,571 INFO L225 Difference]: With dead ends: 649 [2023-12-19 06:28:55,571 INFO L226 Difference]: Without dead ends: 420 [2023-12-19 06:28:55,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:28:55,573 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 214 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:28:55,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1264 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:28:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-19 06:28:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 368. [2023-12-19 06:28:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 203 states have (on average 1.1477832512315271) internal successors, (233), 206 states have internal predecessors, (233), 146 states have call successors, (146), 18 states have call predecessors, (146), 18 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-19 06:28:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 525 transitions. [2023-12-19 06:28:55,616 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 525 transitions. Word has length 395 [2023-12-19 06:28:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:28:55,618 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 525 transitions. [2023-12-19 06:28:55,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 3 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2023-12-19 06:28:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 525 transitions. [2023-12-19 06:28:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:28:55,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:28:55,621 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:28:55,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:28:55,832 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 [2023-12-19 06:28:55,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:28:55,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:28:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1380721905, now seen corresponding path program 1 times [2023-12-19 06:28:55,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:28:55,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173130828] [2023-12-19 06:28:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:55,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:28:55,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:28:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226404962] [2023-12-19 06:28:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:28:55,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:28:55,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:28:55,898 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) [2023-12-19 06:28:55,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:28:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:28:56,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 06:28:56,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:28:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2130 proven. 357 refuted. 0 times theorem prover too weak. 6093 trivial. 0 not checked. [2023-12-19 06:28:57,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:28:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 06:28:58,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:28:58,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173130828] [2023-12-19 06:28:58,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:28:58,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226404962] [2023-12-19 06:28:58,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226404962] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:28:58,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:28:58,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-12-19 06:28:58,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636506263] [2023-12-19 06:28:58,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:28:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:28:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:28:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:28:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:28:58,583 INFO L87 Difference]: Start difference. First operand 368 states and 525 transitions. Second operand has 18 states, 17 states have (on average 8.411764705882353) internal successors, (143), 18 states have internal predecessors, (143), 5 states have call successors, (132), 4 states have call predecessors, (132), 6 states have return successors, (132), 3 states have call predecessors, (132), 5 states have call successors, (132) [2023-12-19 06:29:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:29:00,434 INFO L93 Difference]: Finished difference Result 691 states and 973 transitions. [2023-12-19 06:29:00,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 06:29:00,435 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.411764705882353) internal successors, (143), 18 states have internal predecessors, (143), 5 states have call successors, (132), 4 states have call predecessors, (132), 6 states have return successors, (132), 3 states have call predecessors, (132), 5 states have call successors, (132) Word has length 396 [2023-12-19 06:29:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:29:00,438 INFO L225 Difference]: With dead ends: 691 [2023-12-19 06:29:00,438 INFO L226 Difference]: Without dead ends: 454 [2023-12-19 06:29:00,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=542, Invalid=1528, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 06:29:00,441 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 664 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:29:00,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1011 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:29:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-19 06:29:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 368. [2023-12-19 06:29:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 203 states have (on average 1.1379310344827587) internal successors, (231), 206 states have internal predecessors, (231), 146 states have call successors, (146), 18 states have call predecessors, (146), 18 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-19 06:29:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 523 transitions. [2023-12-19 06:29:00,495 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 523 transitions. Word has length 396 [2023-12-19 06:29:00,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:29:00,497 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 523 transitions. [2023-12-19 06:29:00,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.411764705882353) internal successors, (143), 18 states have internal predecessors, (143), 5 states have call successors, (132), 4 states have call predecessors, (132), 6 states have return successors, (132), 3 states have call predecessors, (132), 5 states have call successors, (132) [2023-12-19 06:29:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 523 transitions. [2023-12-19 06:29:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:29:00,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:29:00,518 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:29:00,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 06:29:00,720 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 [2023-12-19 06:29:00,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:29:00,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:29:00,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1903128141, now seen corresponding path program 1 times [2023-12-19 06:29:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:29:00,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167475127] [2023-12-19 06:29:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:00,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:29:00,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:29:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355009363] [2023-12-19 06:29:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:00,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:29:00,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:29:00,755 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) [2023-12-19 06:29:00,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:29:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:29:00,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 06:29:00,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:29:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 1977 proven. 543 refuted. 0 times theorem prover too weak. 6060 trivial. 0 not checked. [2023-12-19 06:29:04,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:29:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:29:17,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:29:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167475127] [2023-12-19 06:29:17,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:29:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355009363] [2023-12-19 06:29:17,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355009363] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:29:17,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:29:17,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2023-12-19 06:29:17,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976691057] [2023-12-19 06:29:17,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:29:17,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:29:17,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:29:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:29:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2023-12-19 06:29:17,110 INFO L87 Difference]: Start difference. First operand 368 states and 523 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:29:18,194 INFO L93 Difference]: Finished difference Result 644 states and 902 transitions. [2023-12-19 06:29:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:29:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:29:18,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:29:18,204 INFO L225 Difference]: With dead ends: 644 [2023-12-19 06:29:18,204 INFO L226 Difference]: Without dead ends: 407 [2023-12-19 06:29:18,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 06:29:18,207 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 166 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:29:18,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1055 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:29:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-19 06:29:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 376. [2023-12-19 06:29:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 211 states have (on average 1.1421800947867298) internal successors, (241), 214 states have internal predecessors, (241), 146 states have call successors, (146), 18 states have call predecessors, (146), 18 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-19 06:29:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 533 transitions. [2023-12-19 06:29:18,259 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 533 transitions. Word has length 396 [2023-12-19 06:29:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:29:18,260 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 533 transitions. [2023-12-19 06:29:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 533 transitions. [2023-12-19 06:29:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:29:18,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:29:18,263 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:29:18,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 06:29:18,471 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 [2023-12-19 06:29:18,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:29:18,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:29:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1690774577, now seen corresponding path program 1 times [2023-12-19 06:29:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:29:18,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821400143] [2023-12-19 06:29:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:18,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:29:18,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:29:18,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136141696] [2023-12-19 06:29:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:18,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:29:18,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:29:18,519 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) [2023-12-19 06:29:18,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:29:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:29:18,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 06:29:18,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:29:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 1977 proven. 543 refuted. 0 times theorem prover too weak. 6060 trivial. 0 not checked. [2023-12-19 06:29:21,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:29:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:29:25,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:29:25,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821400143] [2023-12-19 06:29:25,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:29:25,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136141696] [2023-12-19 06:29:25,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136141696] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:29:25,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:29:25,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 06:29:25,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939004794] [2023-12-19 06:29:25,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:29:25,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:29:25,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:29:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:29:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:29:25,847 INFO L87 Difference]: Start difference. First operand 376 states and 533 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:29:27,071 INFO L93 Difference]: Finished difference Result 652 states and 911 transitions. [2023-12-19 06:29:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:29:27,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:29:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:29:27,077 INFO L225 Difference]: With dead ends: 652 [2023-12-19 06:29:27,077 INFO L226 Difference]: Without dead ends: 407 [2023-12-19 06:29:27,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:29:27,079 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 125 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:29:27,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1251 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:29:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-19 06:29:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 376. [2023-12-19 06:29:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 211 states have (on average 1.1421800947867298) internal successors, (241), 214 states have internal predecessors, (241), 146 states have call successors, (146), 18 states have call predecessors, (146), 18 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-19 06:29:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 533 transitions. [2023-12-19 06:29:27,128 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 533 transitions. Word has length 396 [2023-12-19 06:29:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:29:27,129 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 533 transitions. [2023-12-19 06:29:27,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 533 transitions. [2023-12-19 06:29:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:29:27,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:29:27,131 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:29:27,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:29:27,340 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 [2023-12-19 06:29:27,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:29:27,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:29:27,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2133673717, now seen corresponding path program 1 times [2023-12-19 06:29:27,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:29:27,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039751923] [2023-12-19 06:29:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:29:27,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:29:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776821675] [2023-12-19 06:29:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:27,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:29:27,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:29:27,376 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) [2023-12-19 06:29:27,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:29:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:29:27,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 06:29:27,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:29:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:29:33,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:29:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:29:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039751923] [2023-12-19 06:29:33,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:29:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776821675] [2023-12-19 06:29:33,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776821675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:29:33,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:29:33,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 06:29:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155386308] [2023-12-19 06:29:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:29:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:29:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:29:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:29:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:29:33,018 INFO L87 Difference]: Start difference. First operand 376 states and 533 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:29:33,538 INFO L93 Difference]: Finished difference Result 682 states and 946 transitions. [2023-12-19 06:29:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 06:29:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:29:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:29:33,542 INFO L225 Difference]: With dead ends: 682 [2023-12-19 06:29:33,542 INFO L226 Difference]: Without dead ends: 437 [2023-12-19 06:29:33,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-12-19 06:29:33,544 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 118 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:29:33,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 910 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:29:33,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-19 06:29:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 384. [2023-12-19 06:29:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 219 states have (on average 1.1415525114155252) internal successors, (250), 222 states have internal predecessors, (250), 146 states have call successors, (146), 18 states have call predecessors, (146), 18 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-19 06:29:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 542 transitions. [2023-12-19 06:29:33,594 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 542 transitions. Word has length 396 [2023-12-19 06:29:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:29:33,595 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 542 transitions. [2023-12-19 06:29:33,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 542 transitions. [2023-12-19 06:29:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:29:33,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:29:33,598 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:29:33,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:29:33,801 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 [2023-12-19 06:29:33,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:29:33,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:29:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1432609139, now seen corresponding path program 1 times [2023-12-19 06:29:33,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:29:33,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109909904] [2023-12-19 06:29:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:29:33,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:29:33,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601732934] [2023-12-19 06:29:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:33,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:29:33,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:29:33,835 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) [2023-12-19 06:29:33,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:29:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:29:34,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 06:29:34,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:29:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:29:41,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:29:41,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:29:41,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109909904] [2023-12-19 06:29:41,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:29:41,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601732934] [2023-12-19 06:29:41,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601732934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:29:41,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:29:41,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 06:29:41,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153611819] [2023-12-19 06:29:41,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:29:41,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:29:41,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:29:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:29:41,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:29:41,922 INFO L87 Difference]: Start difference. First operand 384 states and 542 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:29:42,570 INFO L93 Difference]: Finished difference Result 690 states and 953 transitions. [2023-12-19 06:29:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 06:29:42,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:29:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:29:42,574 INFO L225 Difference]: With dead ends: 690 [2023-12-19 06:29:42,574 INFO L226 Difference]: Without dead ends: 437 [2023-12-19 06:29:42,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-12-19 06:29:42,576 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 106 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:29:42,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 959 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:29:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-19 06:29:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 377. [2023-12-19 06:29:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 212 states have (on average 1.1367924528301887) internal successors, (241), 215 states have internal predecessors, (241), 146 states have call successors, (146), 18 states have call predecessors, (146), 18 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-19 06:29:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 533 transitions. [2023-12-19 06:29:42,635 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 533 transitions. Word has length 396 [2023-12-19 06:29:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:29:42,636 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 533 transitions. [2023-12-19 06:29:42,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 533 transitions. [2023-12-19 06:29:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:29:42,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:29:42,639 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:29:42,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:29:42,846 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 [2023-12-19 06:29:42,846 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:29:42,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:29:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1454625038, now seen corresponding path program 1 times [2023-12-19 06:29:42,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:29:42,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633320536] [2023-12-19 06:29:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:29:42,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:29:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620010412] [2023-12-19 06:29:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:42,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:29:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:29:42,877 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) [2023-12-19 06:29:42,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:29:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:29:43,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:29:43,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:29:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:29:43,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:29:43,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:29:43,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633320536] [2023-12-19 06:29:43,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:29:43,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620010412] [2023-12-19 06:29:43,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620010412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:29:43,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:29:43,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:29:43,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665133244] [2023-12-19 06:29:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:29:43,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:29:43,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:29:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:29:43,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:29:43,108 INFO L87 Difference]: Start difference. First operand 377 states and 533 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:29:43,172 INFO L93 Difference]: Finished difference Result 630 states and 881 transitions. [2023-12-19 06:29:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:29:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:29:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:29:43,175 INFO L225 Difference]: With dead ends: 630 [2023-12-19 06:29:43,175 INFO L226 Difference]: Without dead ends: 384 [2023-12-19 06:29:43,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:29:43,177 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 25 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:29:43,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 469 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:29:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-19 06:29:43,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 359. [2023-12-19 06:29:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 199 states have (on average 1.1306532663316582) internal successors, (225), 201 states have internal predecessors, (225), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:29:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2023-12-19 06:29:43,222 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 396 [2023-12-19 06:29:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:29:43,223 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2023-12-19 06:29:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:29:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2023-12-19 06:29:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:29:43,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:29:43,225 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:29:43,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 06:29:43,433 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 [2023-12-19 06:29:43,433 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:29:43,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:29:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1397366736, now seen corresponding path program 1 times [2023-12-19 06:29:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:29:43,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358878180] [2023-12-19 06:29:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:43,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:29:43,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:29:43,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185619212] [2023-12-19 06:29:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:29:43,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:29:43,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:29:43,481 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) [2023-12-19 06:29:43,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:29:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:29:43,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-19 06:29:43,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:30:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2197 proven. 1392 refuted. 0 times theorem prover too weak. 4991 trivial. 0 not checked. [2023-12-19 06:30:03,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:30:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:30:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:30:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358878180] [2023-12-19 06:30:08,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:30:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185619212] [2023-12-19 06:30:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185619212] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:30:08,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:30:08,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [37] total 44 [2023-12-19 06:30:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340232244] [2023-12-19 06:30:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:30:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:30:08,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:30:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:30:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 06:30:08,979 INFO L87 Difference]: Start difference. First operand 359 states and 509 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:30:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:30:10,142 INFO L93 Difference]: Finished difference Result 669 states and 920 transitions. [2023-12-19 06:30:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 06:30:10,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:30:10,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:30:10,149 INFO L225 Difference]: With dead ends: 669 [2023-12-19 06:30:10,149 INFO L226 Difference]: Without dead ends: 441 [2023-12-19 06:30:10,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=453, Invalid=1997, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 06:30:10,152 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 141 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:30:10,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1453 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:30:10,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-19 06:30:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 369. [2023-12-19 06:30:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 209 states have (on average 1.138755980861244) internal successors, (238), 211 states have internal predecessors, (238), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:30:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 522 transitions. [2023-12-19 06:30:10,204 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 522 transitions. Word has length 396 [2023-12-19 06:30:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:30:10,205 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 522 transitions. [2023-12-19 06:30:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:30:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 522 transitions. [2023-12-19 06:30:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:30:10,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:30:10,208 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:30:10,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 06:30:10,420 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 [2023-12-19 06:30:10,420 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:30:10,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:30:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash -753560460, now seen corresponding path program 1 times [2023-12-19 06:30:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:30:10,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145015297] [2023-12-19 06:30:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:30:10,453 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:30:10,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089230949] [2023-12-19 06:30:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:10,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:30:10,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:30:10,455 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) [2023-12-19 06:30:10,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 06:30:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:30:10,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 06:30:10,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:30:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:30:10,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:30:10,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:30:10,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145015297] [2023-12-19 06:30:10,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:30:10,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089230949] [2023-12-19 06:30:10,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089230949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:30:10,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:30:10,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:30:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204596944] [2023-12-19 06:30:10,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:30:10,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:30:10,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:30:10,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:30:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:30:10,723 INFO L87 Difference]: Start difference. First operand 369 states and 522 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:30:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:30:10,876 INFO L93 Difference]: Finished difference Result 636 states and 888 transitions. [2023-12-19 06:30:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:30:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:30:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:30:10,879 INFO L225 Difference]: With dead ends: 636 [2023-12-19 06:30:10,879 INFO L226 Difference]: Without dead ends: 398 [2023-12-19 06:30:10,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:30:10,881 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 61 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:30:10,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 674 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:30:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-19 06:30:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 371. [2023-12-19 06:30:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 211 states have (on average 1.1374407582938388) internal successors, (240), 213 states have internal predecessors, (240), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:30:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 524 transitions. [2023-12-19 06:30:10,926 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 524 transitions. Word has length 396 [2023-12-19 06:30:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:30:10,927 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 524 transitions. [2023-12-19 06:30:10,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:30:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 524 transitions. [2023-12-19 06:30:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:30:10,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:30:10,930 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:30:10,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 06:30:11,139 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 [2023-12-19 06:30:11,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:30:11,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:30:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1139201298, now seen corresponding path program 1 times [2023-12-19 06:30:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:30:11,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631615790] [2023-12-19 06:30:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:30:11,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:30:11,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444280009] [2023-12-19 06:30:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:11,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:30:11,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:30:11,173 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) [2023-12-19 06:30:11,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 06:30:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:30:11,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:30:11,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:30:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 65 proven. 195 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 06:30:21,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:30:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:30:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:30:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631615790] [2023-12-19 06:30:25,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:30:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444280009] [2023-12-19 06:30:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444280009] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:30:25,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:30:25,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-12-19 06:30:25,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301160800] [2023-12-19 06:30:25,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:30:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:30:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:30:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:30:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:30:25,778 INFO L87 Difference]: Start difference. First operand 371 states and 524 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:30:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:30:27,085 INFO L93 Difference]: Finished difference Result 655 states and 904 transitions. [2023-12-19 06:30:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 06:30:27,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 396 [2023-12-19 06:30:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:30:27,088 INFO L225 Difference]: With dead ends: 655 [2023-12-19 06:30:27,088 INFO L226 Difference]: Without dead ends: 415 [2023-12-19 06:30:27,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-12-19 06:30:27,090 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 96 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:30:27,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1270 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:30:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-19 06:30:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 371. [2023-12-19 06:30:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 211 states have (on average 1.1374407582938388) internal successors, (240), 213 states have internal predecessors, (240), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:30:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 524 transitions. [2023-12-19 06:30:27,137 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 524 transitions. Word has length 396 [2023-12-19 06:30:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:30:27,138 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 524 transitions. [2023-12-19 06:30:27,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:30:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 524 transitions. [2023-12-19 06:30:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 06:30:27,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:30:27,141 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:30:27,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 06:30:27,348 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 [2023-12-19 06:30:27,348 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:30:27,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:30:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1984172750, now seen corresponding path program 1 times [2023-12-19 06:30:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:30:27,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761763920] [2023-12-19 06:30:27,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:30:27,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:30:27,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816454731] [2023-12-19 06:30:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:30:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:30:27,386 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) [2023-12-19 06:30:27,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 06:30:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:30:27,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 06:30:27,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:30:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 65 proven. 195 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 06:30:29,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:30:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 06:30:30,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:30:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761763920] [2023-12-19 06:30:30,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:30:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816454731] [2023-12-19 06:30:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816454731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:30:30,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:30:30,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 06:30:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248750677] [2023-12-19 06:30:30,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:30:30,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:30:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:30:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:30:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:30:30,119 INFO L87 Difference]: Start difference. First operand 371 states and 524 transitions. Second operand has 18 states, 17 states have (on average 7.764705882352941) internal successors, (132), 18 states have internal predecessors, (132), 4 states have call successors, (132), 3 states have call predecessors, (132), 4 states have return successors, (132), 2 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-19 06:30:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:30:31,712 INFO L93 Difference]: Finished difference Result 719 states and 992 transitions. [2023-12-19 06:30:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:30:31,713 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.764705882352941) internal successors, (132), 18 states have internal predecessors, (132), 4 states have call successors, (132), 3 states have call predecessors, (132), 4 states have return successors, (132), 2 states have call predecessors, (132), 4 states have call successors, (132) Word has length 396 [2023-12-19 06:30:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:30:31,716 INFO L225 Difference]: With dead ends: 719 [2023-12-19 06:30:31,716 INFO L226 Difference]: Without dead ends: 479 [2023-12-19 06:30:31,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-19 06:30:31,720 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 632 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:30:31,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 955 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 06:30:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-19 06:30:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 401. [2023-12-19 06:30:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 241 states have (on average 1.1784232365145229) internal successors, (284), 242 states have internal predecessors, (284), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 141 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:30:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 568 transitions. [2023-12-19 06:30:31,790 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 568 transitions. Word has length 396 [2023-12-19 06:30:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:30:31,791 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 568 transitions. [2023-12-19 06:30:31,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.764705882352941) internal successors, (132), 18 states have internal predecessors, (132), 4 states have call successors, (132), 3 states have call predecessors, (132), 4 states have return successors, (132), 2 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-19 06:30:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 568 transitions. [2023-12-19 06:30:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-19 06:30:31,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:30:31,794 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:30:31,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 06:30:32,001 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 [2023-12-19 06:30:32,002 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:30:32,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:30:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash -444642725, now seen corresponding path program 1 times [2023-12-19 06:30:32,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:30:32,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922616099] [2023-12-19 06:30:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:32,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:30:32,026 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:30:32,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344951243] [2023-12-19 06:30:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:30:32,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:30:32,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:30:32,028 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) [2023-12-19 06:30:32,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 06:30:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:30:32,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-19 06:30:32,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:30:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2065 proven. 1560 refuted. 0 times theorem prover too weak. 4955 trivial. 0 not checked. [2023-12-19 06:30:55,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:31:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:31:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:31:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922616099] [2023-12-19 06:31:01,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:31:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344951243] [2023-12-19 06:31:01,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344951243] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:31:01,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:31:01,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [38] total 46 [2023-12-19 06:31:01,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694609125] [2023-12-19 06:31:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:31:01,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:31:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:31:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:31:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1639, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 06:31:01,595 INFO L87 Difference]: Start difference. First operand 401 states and 568 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:31:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:31:02,244 INFO L93 Difference]: Finished difference Result 672 states and 937 transitions. [2023-12-19 06:31:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 06:31:02,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 397 [2023-12-19 06:31:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:31:02,247 INFO L225 Difference]: With dead ends: 672 [2023-12-19 06:31:02,247 INFO L226 Difference]: Without dead ends: 432 [2023-12-19 06:31:02,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=460, Invalid=1892, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 06:31:02,249 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 110 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:31:02,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 831 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:31:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-19 06:31:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 403. [2023-12-19 06:31:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 243 states have (on average 1.1851851851851851) internal successors, (288), 244 states have internal predecessors, (288), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 141 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:31:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 572 transitions. [2023-12-19 06:31:02,323 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 572 transitions. Word has length 397 [2023-12-19 06:31:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:31:02,323 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 572 transitions. [2023-12-19 06:31:02,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:31:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 572 transitions. [2023-12-19 06:31:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-19 06:31:02,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:31:02,327 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:31:02,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 06:31:02,535 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 [2023-12-19 06:31:02,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:31:02,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:31:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 199163551, now seen corresponding path program 1 times [2023-12-19 06:31:02,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:31:02,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601417816] [2023-12-19 06:31:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:02,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:31:02,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:31:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878919739] [2023-12-19 06:31:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:02,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:31:02,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:31:02,567 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) [2023-12-19 06:31:02,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 06:31:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:31:02,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:31:02,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:31:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 65 proven. 195 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 06:31:03,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:31:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 06:31:04,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:31:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601417816] [2023-12-19 06:31:04,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:31:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878919739] [2023-12-19 06:31:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878919739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:31:04,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:31:04,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-19 06:31:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847889077] [2023-12-19 06:31:04,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:31:04,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 06:31:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:31:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 06:31:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-19 06:31:04,054 INFO L87 Difference]: Start difference. First operand 403 states and 572 transitions. Second operand has 15 states, 14 states have (on average 9.357142857142858) internal successors, (131), 15 states have internal predecessors, (131), 4 states have call successors, (132), 3 states have call predecessors, (132), 4 states have return successors, (132), 2 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-19 06:31:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:31:05,518 INFO L93 Difference]: Finished difference Result 754 states and 1031 transitions. [2023-12-19 06:31:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 06:31:05,519 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.357142857142858) internal successors, (131), 15 states have internal predecessors, (131), 4 states have call successors, (132), 3 states have call predecessors, (132), 4 states have return successors, (132), 2 states have call predecessors, (132), 4 states have call successors, (132) Word has length 397 [2023-12-19 06:31:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:31:05,522 INFO L225 Difference]: With dead ends: 754 [2023-12-19 06:31:05,522 INFO L226 Difference]: Without dead ends: 512 [2023-12-19 06:31:05,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 781 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-19 06:31:05,524 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 381 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:31:05,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1215 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:31:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-12-19 06:31:05,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 400. [2023-12-19 06:31:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 240 states have (on average 1.1875) internal successors, (285), 241 states have internal predecessors, (285), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 141 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:31:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 569 transitions. [2023-12-19 06:31:05,599 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 569 transitions. Word has length 397 [2023-12-19 06:31:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:31:05,599 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 569 transitions. [2023-12-19 06:31:05,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.357142857142858) internal successors, (131), 15 states have internal predecessors, (131), 4 states have call successors, (132), 3 states have call predecessors, (132), 4 states have return successors, (132), 2 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-19 06:31:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 569 transitions. [2023-12-19 06:31:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-19 06:31:05,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:31:05,602 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:31:05,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 06:31:05,810 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 [2023-12-19 06:31:05,810 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:31:05,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:31:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash -821904803, now seen corresponding path program 1 times [2023-12-19 06:31:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:31:05,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909753161] [2023-12-19 06:31:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:05,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:31:05,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:31:05,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643694697] [2023-12-19 06:31:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:05,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:31:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:31:05,850 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:31:05,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 06:31:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:31:06,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 06:31:06,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:31:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 132 proven. 384 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2023-12-19 06:31:12,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:31:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:31:17,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:31:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909753161] [2023-12-19 06:31:17,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:31:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643694697] [2023-12-19 06:31:17,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643694697] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:31:17,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:31:17,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-19 06:31:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840579805] [2023-12-19 06:31:17,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:31:17,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:31:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:31:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:31:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-12-19 06:31:17,060 INFO L87 Difference]: Start difference. First operand 400 states and 569 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:31:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:31:17,968 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2023-12-19 06:31:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:31:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 397 [2023-12-19 06:31:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:31:17,971 INFO L225 Difference]: With dead ends: 706 [2023-12-19 06:31:17,971 INFO L226 Difference]: Without dead ends: 464 [2023-12-19 06:31:17,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 06:31:17,973 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 212 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:31:17,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 901 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:31:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-19 06:31:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 400. [2023-12-19 06:31:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 240 states have (on average 1.1875) internal successors, (285), 241 states have internal predecessors, (285), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 141 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:31:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 569 transitions. [2023-12-19 06:31:18,047 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 569 transitions. Word has length 397 [2023-12-19 06:31:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:31:18,048 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 569 transitions. [2023-12-19 06:31:18,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:31:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 569 transitions. [2023-12-19 06:31:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-19 06:31:18,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:31:18,051 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:31:18,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 06:31:18,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 06:31:18,260 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:31:18,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:31:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash -563739365, now seen corresponding path program 1 times [2023-12-19 06:31:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:31:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321688265] [2023-12-19 06:31:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:18,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:31:18,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:31:18,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055410795] [2023-12-19 06:31:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:18,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:31:18,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:31:18,293 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:31:18,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 06:31:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:31:18,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 06:31:18,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:31:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 132 proven. 384 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2023-12-19 06:31:25,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:31:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 06:31:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:31:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321688265] [2023-12-19 06:31:29,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:31:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055410795] [2023-12-19 06:31:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055410795] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:31:29,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:31:29,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-19 06:31:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957643682] [2023-12-19 06:31:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:31:29,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:31:29,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:31:29,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:31:29,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-12-19 06:31:29,291 INFO L87 Difference]: Start difference. First operand 400 states and 569 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:31:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:31:30,314 INFO L93 Difference]: Finished difference Result 706 states and 976 transitions. [2023-12-19 06:31:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:31:30,315 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 397 [2023-12-19 06:31:30,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:31:30,318 INFO L225 Difference]: With dead ends: 706 [2023-12-19 06:31:30,318 INFO L226 Difference]: Without dead ends: 464 [2023-12-19 06:31:30,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 06:31:30,319 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 115 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:31:30,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1499 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:31:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-19 06:31:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 396. [2023-12-19 06:31:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 236 states have (on average 1.1822033898305084) internal successors, (279), 237 states have internal predecessors, (279), 142 states have call successors, (142), 17 states have call predecessors, (142), 17 states have return successors, (142), 141 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:31:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 563 transitions. [2023-12-19 06:31:30,374 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 563 transitions. Word has length 397 [2023-12-19 06:31:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:31:30,375 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 563 transitions. [2023-12-19 06:31:30,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 06:31:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 563 transitions. [2023-12-19 06:31:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-12-19 06:31:30,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:31:30,378 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:31:30,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 06:31:30,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:31:30,588 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:31:30,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:31:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1311535790, now seen corresponding path program 1 times [2023-12-19 06:31:30,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:31:30,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406742644] [2023-12-19 06:31:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:30,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:31:30,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:31:30,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765919524] [2023-12-19 06:31:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:31:30,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:31:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:31:30,617 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:31:30,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 06:31:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:31:30,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 06:31:30,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:32:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 06:32:32,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 06:42:45,641 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 06:42:45,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 06:42:45,651 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 06:42:45,651 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 [2023-12-19 06:42:45,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:42:45,842 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 399 with TraceHistMax 66,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-28-3-2-2-3-2-2-1 context. [2023-12-19 06:42:45,846 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:42:45,849 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 06:42:45,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:42:45 BoogieIcfgContainer [2023-12-19 06:42:45,852 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 06:42:45,852 INFO L158 Benchmark]: Toolchain (without parser) took 840908.51ms. Allocated memory was 187.7MB in the beginning and 1.2GB in the end (delta: 995.1MB). Free memory was 142.5MB in the beginning and 906.3MB in the end (delta: -763.8MB). Peak memory consumption was 716.2MB. Max. memory is 8.0GB. [2023-12-19 06:42:45,853 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 144.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 06:42:45,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.43ms. Allocated memory is still 187.7MB. Free memory was 142.1MB in the beginning and 122.4MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-19 06:42:45,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.03ms. Allocated memory is still 187.7MB. Free memory was 122.4MB in the beginning and 115.2MB in the end (delta: 7.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-19 06:42:45,853 INFO L158 Benchmark]: Boogie Preprocessor took 117.45ms. Allocated memory is still 187.7MB. Free memory was 115.2MB in the beginning and 106.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-19 06:42:45,854 INFO L158 Benchmark]: RCFGBuilder took 823.19ms. Allocated memory is still 187.7MB. Free memory was 106.4MB in the beginning and 139.0MB in the end (delta: -32.6MB). Peak memory consumption was 29.1MB. Max. memory is 8.0GB. [2023-12-19 06:42:45,854 INFO L158 Benchmark]: TraceAbstraction took 839496.33ms. Allocated memory was 187.7MB in the beginning and 1.2GB in the end (delta: 995.1MB). Free memory was 137.9MB in the beginning and 906.3MB in the end (delta: -768.4MB). Peak memory consumption was 711.2MB. Max. memory is 8.0GB. [2023-12-19 06:42:45,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 144.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 397.43ms. Allocated memory is still 187.7MB. Free memory was 142.1MB in the beginning and 122.4MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.03ms. Allocated memory is still 187.7MB. Free memory was 122.4MB in the beginning and 115.2MB in the end (delta: 7.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 117.45ms. Allocated memory is still 187.7MB. Free memory was 115.2MB in the beginning and 106.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 823.19ms. Allocated memory is still 187.7MB. Free memory was 106.4MB in the beginning and 139.0MB in the end (delta: -32.6MB). Peak memory consumption was 29.1MB. Max. memory is 8.0GB. * TraceAbstraction took 839496.33ms. Allocated memory was 187.7MB in the beginning and 1.2GB in the end (delta: 995.1MB). Free memory was 137.9MB in the beginning and 906.3MB in the end (delta: -768.4MB). Peak memory consumption was 711.2MB. 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 399 with TraceHistMax 66,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-28-3-2-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 839.4s, OverallIterations: 20, TraceHistogramMax: 66, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3853 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3660 mSDsluCounter, 17847 SdHoareTripleChecker+Invalid, 8.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13595 mSDsCounter, 1733 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9601 IncrementalHoareTripleChecker+Invalid, 11334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1733 mSolverCounterUnsat, 4252 mSDtfsCounter, 9601 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12807 GetRequests, 12358 SyntacticMatches, 2 SemanticMatches, 447 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3787 ImplicationChecksByTransitivity, 27.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=403occurred in iteration=16, InterpolantAutomatonStates: 261, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 19 MinimizatonAttempts, 892 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 136.8s InterpolantComputationTime, 7911 NumberOfCodeBlocks, 7911 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 12632 ConstructedInterpolants, 3 QuantifiedInterpolants, 119140 SizeOfPredicates, 360 NumberOfNonLiveVariables, 16451 ConjunctsInSsa, 396 ConjunctsInUnsatCore, 32 InterpolantComputations, 13 PerfectInterpolantSequences, 267078/274560 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