/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-78.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:49:16,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:49:16,501 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 07:49:16,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:49:16,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:49:16,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:49:16,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:49:16,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:49:16,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:49:16,531 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:49:16,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:49:16,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:49:16,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:49:16,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:49:16,533 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:49:16,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:49:16,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:49:16,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:49:16,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:49:16,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:49:16,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:49:16,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:49:16,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:49:16,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:49:16,535 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:49:16,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:49:16,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:49:16,535 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:49:16,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:49:16,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:49:16,536 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:49:16,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:49:16,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:49:16,537 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:49:16,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:49:16,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:49:16,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:49:16,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:49:16,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:49:16,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:49:16,918 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:49:16,918 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:49:16,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-78.i [2023-12-19 07:49:18,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:49:18,317 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:49:18,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-78.i [2023-12-19 07:49:18,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf3e750d/c2624e8561574a68b3582b054c2794fc/FLAG8c95091f2 [2023-12-19 07:49:18,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf3e750d/c2624e8561574a68b3582b054c2794fc [2023-12-19 07:49:18,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:49:18,339 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:49:18,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:49:18,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:49:18,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:49:18,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:18,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7f6712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18, skipping insertion in model container [2023-12-19 07:49:18,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:18,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:49:18,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-78.i[916,929] [2023-12-19 07:49:18,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:49:18,739 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:49:18,747 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-78.i[916,929] [2023-12-19 07:49:18,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:49:18,874 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:49:18,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18 WrapperNode [2023-12-19 07:49:18,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:49:18,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:49:18,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:49:18,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:49:18,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:18,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:18,979 INFO L138 Inliner]: procedures = 26, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 879 [2023-12-19 07:49:18,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:49:18,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:49:18,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:49:18,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:49:18,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:18,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,069 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 07:49:19,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:49:19,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:49:19,182 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:49:19,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:49:19,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (1/1) ... [2023-12-19 07:49:19,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:49:19,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:19,219 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 07:49:19,242 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 07:49:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:49:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:49:19,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:49:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:49:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:49:19,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:49:19,411 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:49:19,432 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:49:20,413 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:49:20,446 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:49:20,446 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:49:20,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:49:20 BoogieIcfgContainer [2023-12-19 07:49:20,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:49:20,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:49:20,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:49:20,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:49:20,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:49:18" (1/3) ... [2023-12-19 07:49:20,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27c538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:49:20, skipping insertion in model container [2023-12-19 07:49:20,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:49:18" (2/3) ... [2023-12-19 07:49:20,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27c538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:49:20, skipping insertion in model container [2023-12-19 07:49:20,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:49:20" (3/3) ... [2023-12-19 07:49:20,453 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-78.i [2023-12-19 07:49:20,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:49:20,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:49:20,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:49:20,505 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;@40c22133, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:49:20,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:49:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 228 states have (on average 1.6578947368421053) internal successors, (378), 229 states have internal predecessors, (378), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-19 07:49:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-19 07:49:20,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:20,545 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:20,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:20,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1267353481, now seen corresponding path program 1 times [2023-12-19 07:49:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671577190] [2023-12-19 07:49:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:20,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671577190] [2023-12-19 07:49:20,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:49:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120345403] [2023-12-19 07:49:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:20,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:20,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:20,788 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 07:49:20,815 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 07:49:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:21,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:49:21,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 17298 trivial. 0 not checked. [2023-12-19 07:49:21,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120345403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:21,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:21,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:49:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818075139] [2023-12-19 07:49:21,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:21,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:49:21,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:49:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:49:21,341 INFO L87 Difference]: Start difference. First operand has 325 states, 228 states have (on average 1.6578947368421053) internal successors, (378), 229 states have internal predecessors, (378), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-19 07:49:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:21,396 INFO L93 Difference]: Finished difference Result 641 states and 1212 transitions. [2023-12-19 07:49:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:49:21,407 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 2 states have call successors, (94) Word has length 618 [2023-12-19 07:49:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:21,419 INFO L225 Difference]: With dead ends: 641 [2023-12-19 07:49:21,419 INFO L226 Difference]: Without dead ends: 317 [2023-12-19 07:49:21,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 617 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 07:49:21,428 INFO L413 NwaCegarLoop]: 545 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, 545 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 07:49:21,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:49:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-19 07:49:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2023-12-19 07:49:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 221 states have (on average 1.6289592760180995) internal successors, (360), 221 states have internal predecessors, (360), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-19 07:49:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 548 transitions. [2023-12-19 07:49:21,504 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 548 transitions. Word has length 618 [2023-12-19 07:49:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:21,506 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 548 transitions. [2023-12-19 07:49:21,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-19 07:49:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 548 transitions. [2023-12-19 07:49:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-19 07:49:21,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:21,520 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:21,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 07:49:21,728 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 07:49:21,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:21,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash 474087675, now seen corresponding path program 1 times [2023-12-19 07:49:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:21,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727816002] [2023-12-19 07:49:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:21,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:21,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:21,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564657047] [2023-12-19 07:49:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:21,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:21,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:21,855 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 07:49:21,924 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 07:49:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:22,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:49:22,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:22,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:22,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:22,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727816002] [2023-12-19 07:49:22,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:22,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564657047] [2023-12-19 07:49:22,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564657047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:22,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:22,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:49:22,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163699140] [2023-12-19 07:49:22,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:22,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:49:22,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:22,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:49:22,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:49:22,322 INFO L87 Difference]: Start difference. First operand 317 states and 548 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:22,823 INFO L93 Difference]: Finished difference Result 1183 states and 2042 transitions. [2023-12-19 07:49:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:49:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 618 [2023-12-19 07:49:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:22,829 INFO L225 Difference]: With dead ends: 1183 [2023-12-19 07:49:22,829 INFO L226 Difference]: Without dead ends: 867 [2023-12-19 07:49:22,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 616 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 07:49:22,831 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 889 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:22,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1744 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:49:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-12-19 07:49:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 510. [2023-12-19 07:49:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 369 states have (on average 1.6531165311653115) internal successors, (610), 370 states have internal predecessors, (610), 138 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-19 07:49:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 886 transitions. [2023-12-19 07:49:22,878 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 886 transitions. Word has length 618 [2023-12-19 07:49:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:22,880 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 886 transitions. [2023-12-19 07:49:22,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 886 transitions. [2023-12-19 07:49:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-19 07:49:22,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:22,889 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:22,913 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 07:49:23,097 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 07:49:23,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:23,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash 56691069, now seen corresponding path program 1 times [2023-12-19 07:49:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:23,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994245094] [2023-12-19 07:49:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:23,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:23,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:23,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683613213] [2023-12-19 07:49:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:23,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:23,164 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 07:49:23,167 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 07:49:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:23,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:49:23,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:23,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994245094] [2023-12-19 07:49:23,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683613213] [2023-12-19 07:49:23,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683613213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:23,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:23,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:49:23,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427430046] [2023-12-19 07:49:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:49:23,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:49:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:49:23,632 INFO L87 Difference]: Start difference. First operand 510 states and 886 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:24,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:24,104 INFO L93 Difference]: Finished difference Result 2095 states and 3634 transitions. [2023-12-19 07:49:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:49:24,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 618 [2023-12-19 07:49:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:24,113 INFO L225 Difference]: With dead ends: 2095 [2023-12-19 07:49:24,114 INFO L226 Difference]: Without dead ends: 1586 [2023-12-19 07:49:24,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:49:24,116 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1468 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:24,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1940 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:49:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-12-19 07:49:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 864. [2023-12-19 07:49:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 669 states have (on average 1.695067264573991) internal successors, (1134), 672 states have internal predecessors, (1134), 190 states have call successors, (190), 4 states have call predecessors, (190), 4 states have return successors, (190), 187 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-19 07:49:24,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1514 transitions. [2023-12-19 07:49:24,211 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1514 transitions. Word has length 618 [2023-12-19 07:49:24,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:24,213 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1514 transitions. [2023-12-19 07:49:24,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1514 transitions. [2023-12-19 07:49:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-19 07:49:24,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:24,225 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:24,238 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 07:49:24,435 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 07:49:24,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:24,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:24,437 INFO L85 PathProgramCache]: Analyzing trace with hash 41172351, now seen corresponding path program 1 times [2023-12-19 07:49:24,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:24,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280219656] [2023-12-19 07:49:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:24,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:24,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396230136] [2023-12-19 07:49:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:24,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:24,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:24,589 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 07:49:24,625 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 07:49:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:24,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:49:24,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:24,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:24,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:24,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280219656] [2023-12-19 07:49:24,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:24,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396230136] [2023-12-19 07:49:24,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396230136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:24,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:24,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:49:24,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432795661] [2023-12-19 07:49:24,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:24,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:49:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:24,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:49:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:49:24,995 INFO L87 Difference]: Start difference. First operand 864 states and 1514 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:25,352 INFO L93 Difference]: Finished difference Result 2109 states and 3679 transitions. [2023-12-19 07:49:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:49:25,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 618 [2023-12-19 07:49:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:25,358 INFO L225 Difference]: With dead ends: 2109 [2023-12-19 07:49:25,358 INFO L226 Difference]: Without dead ends: 1246 [2023-12-19 07:49:25,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 616 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 07:49:25,362 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 769 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:25,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1357 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:49:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2023-12-19 07:49:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 973. [2023-12-19 07:49:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 740 states have (on average 1.681081081081081) internal successors, (1244), 744 states have internal predecessors, (1244), 226 states have call successors, (226), 6 states have call predecessors, (226), 6 states have return successors, (226), 222 states have call predecessors, (226), 226 states have call successors, (226) [2023-12-19 07:49:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1696 transitions. [2023-12-19 07:49:25,417 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1696 transitions. Word has length 618 [2023-12-19 07:49:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:25,418 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1696 transitions. [2023-12-19 07:49:25,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1696 transitions. [2023-12-19 07:49:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-19 07:49:25,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:25,424 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:25,452 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 07:49:25,632 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 07:49:25,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:25,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:25,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2008215491, now seen corresponding path program 1 times [2023-12-19 07:49:25,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:25,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300230424] [2023-12-19 07:49:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:25,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:25,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492367849] [2023-12-19 07:49:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:25,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:25,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:25,695 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 07:49:25,716 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 07:49:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:26,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:49:26,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:26,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:26,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:26,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300230424] [2023-12-19 07:49:26,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:26,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492367849] [2023-12-19 07:49:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492367849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:26,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:26,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:49:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045943031] [2023-12-19 07:49:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:26,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:49:26,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:49:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:49:26,148 INFO L87 Difference]: Start difference. First operand 973 states and 1696 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:26,826 INFO L93 Difference]: Finished difference Result 3986 states and 6993 transitions. [2023-12-19 07:49:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:49:26,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 618 [2023-12-19 07:49:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:26,840 INFO L225 Difference]: With dead ends: 3986 [2023-12-19 07:49:26,841 INFO L226 Difference]: Without dead ends: 3071 [2023-12-19 07:49:26,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:49:26,844 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 1265 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:26,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 2592 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:49:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2023-12-19 07:49:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 2615. [2023-12-19 07:49:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 1989 states have (on average 1.6676721970839619) internal successors, (3317), 2000 states have internal predecessors, (3317), 606 states have call successors, (606), 19 states have call predecessors, (606), 19 states have return successors, (606), 595 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-19 07:49:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 4529 transitions. [2023-12-19 07:49:27,001 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 4529 transitions. Word has length 618 [2023-12-19 07:49:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:27,003 INFO L495 AbstractCegarLoop]: Abstraction has 2615 states and 4529 transitions. [2023-12-19 07:49:27,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 4529 transitions. [2023-12-19 07:49:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-19 07:49:27,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:27,009 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:27,018 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 07:49:27,216 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 07:49:27,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:27,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:27,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1442746303, now seen corresponding path program 1 times [2023-12-19 07:49:27,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:27,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213007038] [2023-12-19 07:49:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:27,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:27,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032654919] [2023-12-19 07:49:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:27,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:27,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:27,294 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 07:49:27,295 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 07:49:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:27,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:49:27,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:27,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213007038] [2023-12-19 07:49:27,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032654919] [2023-12-19 07:49:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032654919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:27,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:49:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950657191] [2023-12-19 07:49:27,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:27,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:49:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:27,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:49:27,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:49:27,640 INFO L87 Difference]: Start difference. First operand 2615 states and 4529 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:27,731 INFO L93 Difference]: Finished difference Result 5172 states and 8964 transitions. [2023-12-19 07:49:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:49:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 618 [2023-12-19 07:49:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:27,742 INFO L225 Difference]: With dead ends: 5172 [2023-12-19 07:49:27,742 INFO L226 Difference]: Without dead ends: 2615 [2023-12-19 07:49:27,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:49:27,749 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 17 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:27,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1602 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:49:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2023-12-19 07:49:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2615. [2023-12-19 07:49:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 1989 states have (on average 1.6616390145801911) internal successors, (3305), 2000 states have internal predecessors, (3305), 606 states have call successors, (606), 19 states have call predecessors, (606), 19 states have return successors, (606), 595 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-19 07:49:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 4517 transitions. [2023-12-19 07:49:27,898 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 4517 transitions. Word has length 618 [2023-12-19 07:49:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:27,899 INFO L495 AbstractCegarLoop]: Abstraction has 2615 states and 4517 transitions. [2023-12-19 07:49:27,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:27,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 4517 transitions. [2023-12-19 07:49:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2023-12-19 07:49:27,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:27,904 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:27,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:49:28,112 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 07:49:28,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:28,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1158399140, now seen corresponding path program 1 times [2023-12-19 07:49:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280390413] [2023-12-19 07:49:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:28,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:28,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918797478] [2023-12-19 07:49:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:28,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:28,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:28,174 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 07:49:28,199 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 07:49:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:28,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:49:28,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:28,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:28,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280390413] [2023-12-19 07:49:28,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918797478] [2023-12-19 07:49:28,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918797478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:28,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:28,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:49:28,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741910166] [2023-12-19 07:49:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:28,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:49:28,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:49:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:49:28,622 INFO L87 Difference]: Start difference. First operand 2615 states and 4517 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:28,788 INFO L93 Difference]: Finished difference Result 5522 states and 9505 transitions. [2023-12-19 07:49:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:49:28,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 619 [2023-12-19 07:49:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:28,799 INFO L225 Difference]: With dead ends: 5522 [2023-12-19 07:49:28,800 INFO L226 Difference]: Without dead ends: 2965 [2023-12-19 07:49:28,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:49:28,806 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 126 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:28,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2153 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:49:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2023-12-19 07:49:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2807. [2023-12-19 07:49:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2181 states have (on average 1.6584135717560753) internal successors, (3617), 2192 states have internal predecessors, (3617), 606 states have call successors, (606), 19 states have call predecessors, (606), 19 states have return successors, (606), 595 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-19 07:49:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4829 transitions. [2023-12-19 07:49:28,990 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4829 transitions. Word has length 619 [2023-12-19 07:49:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:28,990 INFO L495 AbstractCegarLoop]: Abstraction has 2807 states and 4829 transitions. [2023-12-19 07:49:28,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4829 transitions. [2023-12-19 07:49:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2023-12-19 07:49:28,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:28,997 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:29,018 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 07:49:29,204 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 07:49:29,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:29,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1142423450, now seen corresponding path program 1 times [2023-12-19 07:49:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:29,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198565332] [2023-12-19 07:49:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:29,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:29,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758232121] [2023-12-19 07:49:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:29,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:29,250 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 07:49:29,268 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 07:49:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:29,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:49:29,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:29,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:29,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198565332] [2023-12-19 07:49:29,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758232121] [2023-12-19 07:49:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758232121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:29,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:29,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:49:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595044547] [2023-12-19 07:49:29,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:29,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:49:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:49:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:49:29,624 INFO L87 Difference]: Start difference. First operand 2807 states and 4829 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:29,773 INFO L93 Difference]: Finished difference Result 6780 states and 11685 transitions. [2023-12-19 07:49:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:49:29,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 619 [2023-12-19 07:49:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:29,788 INFO L225 Difference]: With dead ends: 6780 [2023-12-19 07:49:29,788 INFO L226 Difference]: Without dead ends: 4031 [2023-12-19 07:49:29,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 617 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 07:49:29,796 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 342 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:29,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1059 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:49:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2023-12-19 07:49:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 4026. [2023-12-19 07:49:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 3216 states have (on average 1.6548507462686568) internal successors, (5322), 3233 states have internal predecessors, (5322), 780 states have call successors, (780), 29 states have call predecessors, (780), 29 states have return successors, (780), 763 states have call predecessors, (780), 780 states have call successors, (780) [2023-12-19 07:49:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 6882 transitions. [2023-12-19 07:49:29,983 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 6882 transitions. Word has length 619 [2023-12-19 07:49:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:29,983 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 6882 transitions. [2023-12-19 07:49:29,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 6882 transitions. [2023-12-19 07:49:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2023-12-19 07:49:29,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:29,991 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:30,016 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 07:49:30,200 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 07:49:30,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:30,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1372794984, now seen corresponding path program 1 times [2023-12-19 07:49:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378079323] [2023-12-19 07:49:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:30,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:30,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436328920] [2023-12-19 07:49:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:30,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:30,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:30,241 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 07:49:30,267 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 07:49:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:30,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:49:30,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:31,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:31,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378079323] [2023-12-19 07:49:31,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436328920] [2023-12-19 07:49:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436328920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:31,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:49:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981754879] [2023-12-19 07:49:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:31,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:49:31,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:49:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:49:31,148 INFO L87 Difference]: Start difference. First operand 4026 states and 6882 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:31,430 INFO L93 Difference]: Finished difference Result 10719 states and 18272 transitions. [2023-12-19 07:49:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:49:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 619 [2023-12-19 07:49:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:31,455 INFO L225 Difference]: With dead ends: 10719 [2023-12-19 07:49:31,455 INFO L226 Difference]: Without dead ends: 6755 [2023-12-19 07:49:31,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 617 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 07:49:31,466 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 261 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:31,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1081 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:49:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6755 states. [2023-12-19 07:49:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6755 to 6753. [2023-12-19 07:49:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6753 states, 5348 states have (on average 1.6409872849663425) internal successors, (8776), 5375 states have internal predecessors, (8776), 1350 states have call successors, (1350), 54 states have call predecessors, (1350), 54 states have return successors, (1350), 1323 states have call predecessors, (1350), 1350 states have call successors, (1350) [2023-12-19 07:49:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6753 states to 6753 states and 11476 transitions. [2023-12-19 07:49:31,824 INFO L78 Accepts]: Start accepts. Automaton has 6753 states and 11476 transitions. Word has length 619 [2023-12-19 07:49:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:31,825 INFO L495 AbstractCegarLoop]: Abstraction has 6753 states and 11476 transitions. [2023-12-19 07:49:31,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6753 states and 11476 transitions. [2023-12-19 07:49:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2023-12-19 07:49:31,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:31,836 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:31,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 07:49:32,044 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 07:49:32,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:32,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1318402086, now seen corresponding path program 1 times [2023-12-19 07:49:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:32,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628914856] [2023-12-19 07:49:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:32,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:32,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75831366] [2023-12-19 07:49:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:32,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:32,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:32,110 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 07:49:32,144 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 07:49:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:32,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:49:32,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8805 proven. 147 refuted. 0 times theorem prover too weak. 8532 trivial. 0 not checked. [2023-12-19 07:49:32,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:49:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 132 proven. 147 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:49:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628914856] [2023-12-19 07:49:33,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75831366] [2023-12-19 07:49:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75831366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:49:33,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:49:33,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:49:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223245025] [2023-12-19 07:49:33,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:49:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:49:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:49:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:49:33,185 INFO L87 Difference]: Start difference. First operand 6753 states and 11476 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 3 states have call predecessors, (144), 3 states have call successors, (144) [2023-12-19 07:49:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:33,728 INFO L93 Difference]: Finished difference Result 11320 states and 19187 transitions. [2023-12-19 07:49:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:49:33,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 3 states have call predecessors, (144), 3 states have call successors, (144) Word has length 619 [2023-12-19 07:49:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:33,744 INFO L225 Difference]: With dead ends: 11320 [2023-12-19 07:49:33,744 INFO L226 Difference]: Without dead ends: 4629 [2023-12-19 07:49:33,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:49:33,759 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 636 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:33,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1087 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:49:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2023-12-19 07:49:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4441. [2023-12-19 07:49:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 3468 states have (on average 1.6274509803921569) internal successors, (5644), 3483 states have internal predecessors, (5644), 930 states have call successors, (930), 42 states have call predecessors, (930), 42 states have return successors, (930), 915 states have call predecessors, (930), 930 states have call successors, (930) [2023-12-19 07:49:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 7504 transitions. [2023-12-19 07:49:34,044 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 7504 transitions. Word has length 619 [2023-12-19 07:49:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:34,045 INFO L495 AbstractCegarLoop]: Abstraction has 4441 states and 7504 transitions. [2023-12-19 07:49:34,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 3 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 3 states have call predecessors, (144), 3 states have call successors, (144) [2023-12-19 07:49:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 7504 transitions. [2023-12-19 07:49:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-19 07:49:34,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:34,053 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:34,076 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 07:49:34,262 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 07:49:34,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:34,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1510753447, now seen corresponding path program 1 times [2023-12-19 07:49:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317652090] [2023-12-19 07:49:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:34,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:34,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490360066] [2023-12-19 07:49:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:34,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:34,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:34,313 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 07:49:34,345 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 07:49:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:34,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:49:34,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:34,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317652090] [2023-12-19 07:49:34,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490360066] [2023-12-19 07:49:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490360066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:34,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:34,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:49:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471819580] [2023-12-19 07:49:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:34,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:49:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:49:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:49:34,745 INFO L87 Difference]: Start difference. First operand 4441 states and 7504 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:35,228 INFO L93 Difference]: Finished difference Result 11799 states and 19970 transitions. [2023-12-19 07:49:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:49:35,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 620 [2023-12-19 07:49:35,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:35,250 INFO L225 Difference]: With dead ends: 11799 [2023-12-19 07:49:35,250 INFO L226 Difference]: Without dead ends: 7420 [2023-12-19 07:49:35,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 618 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 07:49:35,261 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 691 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:35,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1498 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:49:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2023-12-19 07:49:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 4436. [2023-12-19 07:49:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 3500 states have (on average 1.6308571428571428) internal successors, (5708), 3514 states have internal predecessors, (5708), 894 states have call successors, (894), 41 states have call predecessors, (894), 41 states have return successors, (894), 880 states have call predecessors, (894), 894 states have call successors, (894) [2023-12-19 07:49:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 7496 transitions. [2023-12-19 07:49:35,552 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 7496 transitions. Word has length 620 [2023-12-19 07:49:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:35,553 INFO L495 AbstractCegarLoop]: Abstraction has 4436 states and 7496 transitions. [2023-12-19 07:49:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 7496 transitions. [2023-12-19 07:49:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-19 07:49:35,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:35,560 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:35,567 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 07:49:35,767 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 07:49:35,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:35,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash -85503193, now seen corresponding path program 1 times [2023-12-19 07:49:35,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:35,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439592025] [2023-12-19 07:49:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:35,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:35,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:35,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986698368] [2023-12-19 07:49:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:35,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:35,826 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 07:49:35,850 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 07:49:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:36,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:49:36,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:36,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439592025] [2023-12-19 07:49:36,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:36,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986698368] [2023-12-19 07:49:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986698368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:36,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:36,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:49:36,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620884319] [2023-12-19 07:49:36,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:36,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:49:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:49:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:49:36,218 INFO L87 Difference]: Start difference. First operand 4436 states and 7496 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:36,564 INFO L93 Difference]: Finished difference Result 11858 states and 20067 transitions. [2023-12-19 07:49:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:49:36,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 620 [2023-12-19 07:49:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:36,582 INFO L225 Difference]: With dead ends: 11858 [2023-12-19 07:49:36,582 INFO L226 Difference]: Without dead ends: 7423 [2023-12-19 07:49:36,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 618 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 07:49:36,592 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 276 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:36,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1318 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:49:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2023-12-19 07:49:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 4460. [2023-12-19 07:49:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 3524 states have (on average 1.6299659477866062) internal successors, (5744), 3538 states have internal predecessors, (5744), 894 states have call successors, (894), 41 states have call predecessors, (894), 41 states have return successors, (894), 880 states have call predecessors, (894), 894 states have call successors, (894) [2023-12-19 07:49:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 7532 transitions. [2023-12-19 07:49:36,873 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 7532 transitions. Word has length 620 [2023-12-19 07:49:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:36,874 INFO L495 AbstractCegarLoop]: Abstraction has 4460 states and 7532 transitions. [2023-12-19 07:49:36,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 7532 transitions. [2023-12-19 07:49:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2023-12-19 07:49:36,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:36,881 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:36,916 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 07:49:37,089 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 07:49:37,089 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:37,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1640164043, now seen corresponding path program 1 times [2023-12-19 07:49:37,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:37,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954595969] [2023-12-19 07:49:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:37,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:37,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143781760] [2023-12-19 07:49:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:37,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:37,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:37,138 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 07:49:37,165 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 07:49:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:37,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:49:37,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 7503 proven. 84 refuted. 0 times theorem prover too weak. 9897 trivial. 0 not checked. [2023-12-19 07:49:37,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:49:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 195 proven. 84 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:49:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954595969] [2023-12-19 07:49:37,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143781760] [2023-12-19 07:49:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143781760] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:49:37,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:49:37,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:49:37,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386910208] [2023-12-19 07:49:38,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:49:38,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:49:38,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:38,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:49:38,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:49:38,002 INFO L87 Difference]: Start difference. First operand 4460 states and 7532 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:49:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:38,618 INFO L93 Difference]: Finished difference Result 7750 states and 13077 transitions. [2023-12-19 07:49:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:49:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 621 [2023-12-19 07:49:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:38,640 INFO L225 Difference]: With dead ends: 7750 [2023-12-19 07:49:38,640 INFO L226 Difference]: Without dead ends: 3291 [2023-12-19 07:49:38,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1234 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:49:38,648 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 968 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:38,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1119 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:49:38,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2023-12-19 07:49:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 1625. [2023-12-19 07:49:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1311 states have (on average 1.6376811594202898) internal successors, (2147), 1315 states have internal predecessors, (2147), 298 states have call successors, (298), 15 states have call predecessors, (298), 15 states have return successors, (298), 294 states have call predecessors, (298), 298 states have call successors, (298) [2023-12-19 07:49:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2743 transitions. [2023-12-19 07:49:38,740 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2743 transitions. Word has length 621 [2023-12-19 07:49:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:38,741 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2743 transitions. [2023-12-19 07:49:38,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:49:38,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2743 transitions. [2023-12-19 07:49:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-19 07:49:38,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:38,746 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:38,756 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 07:49:38,954 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 07:49:38,954 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:38,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1339310969, now seen corresponding path program 1 times [2023-12-19 07:49:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:38,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048337486] [2023-12-19 07:49:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:38,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:38,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:38,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783941509] [2023-12-19 07:49:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:38,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:38,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:38,995 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 07:49:39,012 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 07:49:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:39,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:49:39,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 1695 proven. 12 refuted. 0 times theorem prover too weak. 15777 trivial. 0 not checked. [2023-12-19 07:49:39,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:49:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 267 proven. 12 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:49:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048337486] [2023-12-19 07:49:39,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783941509] [2023-12-19 07:49:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783941509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:49:39,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:49:39,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:49:39,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554340982] [2023-12-19 07:49:39,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:49:39,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:49:39,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:39,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:49:39,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:49:39,784 INFO L87 Difference]: Start difference. First operand 1625 states and 2743 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-19 07:49:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:40,238 INFO L93 Difference]: Finished difference Result 3279 states and 5513 transitions. [2023-12-19 07:49:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:49:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 622 [2023-12-19 07:49:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:40,249 INFO L225 Difference]: With dead ends: 3279 [2023-12-19 07:49:40,250 INFO L226 Difference]: Without dead ends: 1655 [2023-12-19 07:49:40,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1236 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:49:40,252 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 655 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:40,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1134 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:49:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2023-12-19 07:49:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1633. [2023-12-19 07:49:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1317 states have (on average 1.6302201974183752) internal successors, (2147), 1321 states have internal predecessors, (2147), 298 states have call successors, (298), 17 states have call predecessors, (298), 17 states have return successors, (298), 294 states have call predecessors, (298), 298 states have call successors, (298) [2023-12-19 07:49:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2743 transitions. [2023-12-19 07:49:40,329 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2743 transitions. Word has length 622 [2023-12-19 07:49:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:40,330 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2743 transitions. [2023-12-19 07:49:40,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-19 07:49:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2743 transitions. [2023-12-19 07:49:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-19 07:49:40,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:40,335 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:40,346 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 07:49:40,544 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 07:49:40,545 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:40,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1198762359, now seen corresponding path program 1 times [2023-12-19 07:49:40,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:40,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900754906] [2023-12-19 07:49:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:40,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:40,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:40,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059357907] [2023-12-19 07:49:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:40,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:40,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:40,588 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 07:49:40,634 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 07:49:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:41,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:49:41,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 6765 proven. 207 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 07:49:41,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:49:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 72 proven. 207 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:49:41,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900754906] [2023-12-19 07:49:41,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:41,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059357907] [2023-12-19 07:49:41,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059357907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:49:41,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:49:41,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:49:41,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491541872] [2023-12-19 07:49:41,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:49:41,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:49:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:41,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:49:41,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:49:41,944 INFO L87 Difference]: Start difference. First operand 1633 states and 2743 transitions. Second operand has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-19 07:49:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:42,935 INFO L93 Difference]: Finished difference Result 4318 states and 7183 transitions. [2023-12-19 07:49:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 07:49:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) Word has length 622 [2023-12-19 07:49:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:42,944 INFO L225 Difference]: With dead ends: 4318 [2023-12-19 07:49:42,945 INFO L226 Difference]: Without dead ends: 2686 [2023-12-19 07:49:42,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1235 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=502, Unknown=0, NotChecked=0, Total=756 [2023-12-19 07:49:42,949 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 1617 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:42,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1401 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:49:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-19 07:49:43,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1677. [2023-12-19 07:49:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1347 states have (on average 1.605048255382331) internal successors, (2162), 1351 states have internal predecessors, (2162), 298 states have call successors, (298), 31 states have call predecessors, (298), 31 states have return successors, (298), 294 states have call predecessors, (298), 298 states have call successors, (298) [2023-12-19 07:49:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2758 transitions. [2023-12-19 07:49:43,050 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2758 transitions. Word has length 622 [2023-12-19 07:49:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:43,051 INFO L495 AbstractCegarLoop]: Abstraction has 1677 states and 2758 transitions. [2023-12-19 07:49:43,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-19 07:49:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2758 transitions. [2023-12-19 07:49:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-19 07:49:43,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:43,056 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:43,078 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 07:49:43,264 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 07:49:43,265 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:43,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash 482016790, now seen corresponding path program 1 times [2023-12-19 07:49:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:43,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262571856] [2023-12-19 07:49:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:43,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:43,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112378866] [2023-12-19 07:49:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:43,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:43,306 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 07:49:43,310 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 07:49:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:43,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:49:43,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:43,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:43,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262571856] [2023-12-19 07:49:43,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112378866] [2023-12-19 07:49:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112378866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:43,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:43,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:49:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222770705] [2023-12-19 07:49:43,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:43,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:49:43,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:49:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:49:43,781 INFO L87 Difference]: Start difference. First operand 1677 states and 2758 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:44,185 INFO L93 Difference]: Finished difference Result 4990 states and 8200 transitions. [2023-12-19 07:49:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:49:44,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 622 [2023-12-19 07:49:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:44,194 INFO L225 Difference]: With dead ends: 4990 [2023-12-19 07:49:44,194 INFO L226 Difference]: Without dead ends: 3314 [2023-12-19 07:49:44,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 620 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 07:49:44,197 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 1021 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:44,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1410 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:49:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2023-12-19 07:49:44,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3201. [2023-12-19 07:49:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 2542 states have (on average 1.5948072383949645) internal successors, (4054), 2550 states have internal predecessors, (4054), 596 states have call successors, (596), 62 states have call predecessors, (596), 62 states have return successors, (596), 588 states have call predecessors, (596), 596 states have call successors, (596) [2023-12-19 07:49:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 5246 transitions. [2023-12-19 07:49:44,399 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 5246 transitions. Word has length 622 [2023-12-19 07:49:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:44,399 INFO L495 AbstractCegarLoop]: Abstraction has 3201 states and 5246 transitions. [2023-12-19 07:49:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 5246 transitions. [2023-12-19 07:49:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-19 07:49:44,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:44,405 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:44,413 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 07:49:44,612 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 07:49:44,613 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:44,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash 936532, now seen corresponding path program 1 times [2023-12-19 07:49:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056534568] [2023-12-19 07:49:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:44,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:44,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266343228] [2023-12-19 07:49:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:44,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:44,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:44,661 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 07:49:44,697 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 07:49:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:45,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:49:45,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 2673 proven. 21 refuted. 0 times theorem prover too weak. 14790 trivial. 0 not checked. [2023-12-19 07:49:45,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:49:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 258 proven. 21 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:49:45,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:45,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056534568] [2023-12-19 07:49:45,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:45,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266343228] [2023-12-19 07:49:45,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266343228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:49:45,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:49:45,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:49:45,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336286424] [2023-12-19 07:49:45,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:49:45,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:49:45,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:49:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:49:45,526 INFO L87 Difference]: Start difference. First operand 3201 states and 5246 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-19 07:49:46,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:46,116 INFO L93 Difference]: Finished difference Result 6489 states and 10575 transitions. [2023-12-19 07:49:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:49:46,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 622 [2023-12-19 07:49:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:46,125 INFO L225 Difference]: With dead ends: 6489 [2023-12-19 07:49:46,125 INFO L226 Difference]: Without dead ends: 3289 [2023-12-19 07:49:46,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1236 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:49:46,128 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 656 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:46,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1119 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:49:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2023-12-19 07:49:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3217. [2023-12-19 07:49:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 2554 states have (on average 1.5779169929522319) internal successors, (4030), 2562 states have internal predecessors, (4030), 596 states have call successors, (596), 66 states have call predecessors, (596), 66 states have return successors, (596), 588 states have call predecessors, (596), 596 states have call successors, (596) [2023-12-19 07:49:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 5222 transitions. [2023-12-19 07:49:46,342 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 5222 transitions. Word has length 622 [2023-12-19 07:49:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 3217 states and 5222 transitions. [2023-12-19 07:49:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-19 07:49:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 5222 transitions. [2023-12-19 07:49:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-19 07:49:46,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:46,349 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:46,359 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 07:49:46,556 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 07:49:46,557 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:46,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash -171737330, now seen corresponding path program 1 times [2023-12-19 07:49:46,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:46,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305662269] [2023-12-19 07:49:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:46,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:46,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:46,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127427843] [2023-12-19 07:49:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:46,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:46,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:46,633 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 07:49:46,634 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 07:49:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:47,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:49:47,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 2029 proven. 15 refuted. 0 times theorem prover too weak. 15440 trivial. 0 not checked. [2023-12-19 07:49:47,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:49:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 264 proven. 15 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:49:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305662269] [2023-12-19 07:49:47,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127427843] [2023-12-19 07:49:47,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127427843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:49:47,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:49:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:49:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643963310] [2023-12-19 07:49:47,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:49:47,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:49:47,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:49:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:49:47,462 INFO L87 Difference]: Start difference. First operand 3217 states and 5222 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-19 07:49:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:48,156 INFO L93 Difference]: Finished difference Result 6529 states and 10535 transitions. [2023-12-19 07:49:48,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:49:48,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 622 [2023-12-19 07:49:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:48,168 INFO L225 Difference]: With dead ends: 6529 [2023-12-19 07:49:48,168 INFO L226 Difference]: Without dead ends: 3313 [2023-12-19 07:49:48,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1236 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:49:48,175 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 933 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:48,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1122 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:49:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2023-12-19 07:49:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3233. [2023-12-19 07:49:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 2566 states have (on average 1.5705378020265004) internal successors, (4030), 2574 states have internal predecessors, (4030), 596 states have call successors, (596), 70 states have call predecessors, (596), 70 states have return successors, (596), 588 states have call predecessors, (596), 596 states have call successors, (596) [2023-12-19 07:49:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 5222 transitions. [2023-12-19 07:49:48,421 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 5222 transitions. Word has length 622 [2023-12-19 07:49:48,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:48,422 INFO L495 AbstractCegarLoop]: Abstraction has 3233 states and 5222 transitions. [2023-12-19 07:49:48,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-19 07:49:48,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 5222 transitions. [2023-12-19 07:49:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-19 07:49:48,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:48,428 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:48,450 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 07:49:48,636 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 07:49:48,637 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:48,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:48,637 INFO L85 PathProgramCache]: Analyzing trace with hash -149105076, now seen corresponding path program 1 times [2023-12-19 07:49:48,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:48,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109714214] [2023-12-19 07:49:48,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:48,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:48,682 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:48,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315405518] [2023-12-19 07:49:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:48,683 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 07:49:48,708 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 07:49:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:49,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:49:49,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:49,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:49,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:49,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109714214] [2023-12-19 07:49:49,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:49,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315405518] [2023-12-19 07:49:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315405518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:49,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:49:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115072005] [2023-12-19 07:49:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:49:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:49:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:49:49,369 INFO L87 Difference]: Start difference. First operand 3233 states and 5222 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:49,667 INFO L93 Difference]: Finished difference Result 6623 states and 10684 transitions. [2023-12-19 07:49:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:49:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 622 [2023-12-19 07:49:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:49,677 INFO L225 Difference]: With dead ends: 6623 [2023-12-19 07:49:49,677 INFO L226 Difference]: Without dead ends: 3391 [2023-12-19 07:49:49,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:49:49,684 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 42 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:49,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2138 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:49:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2023-12-19 07:49:49,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3137. [2023-12-19 07:49:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3137 states, 2470 states have (on average 1.5587044534412955) internal successors, (3850), 2478 states have internal predecessors, (3850), 596 states have call successors, (596), 70 states have call predecessors, (596), 70 states have return successors, (596), 588 states have call predecessors, (596), 596 states have call successors, (596) [2023-12-19 07:49:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 5042 transitions. [2023-12-19 07:49:49,954 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 5042 transitions. Word has length 622 [2023-12-19 07:49:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:49,954 INFO L495 AbstractCegarLoop]: Abstraction has 3137 states and 5042 transitions. [2023-12-19 07:49:49,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 5042 transitions. [2023-12-19 07:49:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-19 07:49:49,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:49,961 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:49,981 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 07:49:50,169 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 07:49:50,169 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:50,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash -743542897, now seen corresponding path program 1 times [2023-12-19 07:49:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:50,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382802671] [2023-12-19 07:49:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:50,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:50,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237352048] [2023-12-19 07:49:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:50,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:50,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:50,246 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 07:49:50,262 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 07:49:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:50,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:49:50,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:49:50,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:49:50,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:50,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382802671] [2023-12-19 07:49:50,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:50,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237352048] [2023-12-19 07:49:50,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237352048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:49:50,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:49:50,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:49:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886414121] [2023-12-19 07:49:50,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:49:50,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:49:50,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:50,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:49:50,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:49:50,900 INFO L87 Difference]: Start difference. First operand 3137 states and 5042 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:49:52,095 INFO L93 Difference]: Finished difference Result 13783 states and 22247 transitions. [2023-12-19 07:49:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:49:52,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 624 [2023-12-19 07:49:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:49:52,118 INFO L225 Difference]: With dead ends: 13783 [2023-12-19 07:49:52,118 INFO L226 Difference]: Without dead ends: 10647 [2023-12-19 07:49:52,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:49:52,126 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1449 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:49:52,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 2404 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:49:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10647 states. [2023-12-19 07:49:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10647 to 6817. [2023-12-19 07:49:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6817 states, 5748 states have (on average 1.5922059846903271) internal successors, (9152), 5768 states have internal predecessors, (9152), 956 states have call successors, (956), 112 states have call predecessors, (956), 112 states have return successors, (956), 936 states have call predecessors, (956), 956 states have call successors, (956) [2023-12-19 07:49:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 11064 transitions. [2023-12-19 07:49:52,668 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 11064 transitions. Word has length 624 [2023-12-19 07:49:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:49:52,669 INFO L495 AbstractCegarLoop]: Abstraction has 6817 states and 11064 transitions. [2023-12-19 07:49:52,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:49:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 11064 transitions. [2023-12-19 07:49:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-19 07:49:52,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:49:52,675 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:52,690 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 07:49:52,884 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 07:49:52,885 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:49:52,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:49:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1451056053, now seen corresponding path program 1 times [2023-12-19 07:49:52,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:49:52,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148049982] [2023-12-19 07:49:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:52,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:49:52,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:49:52,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657473484] [2023-12-19 07:49:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:49:52,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:49:52,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:49:52,949 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:49:52,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 07:49:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:49:53,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 07:49:53,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:49:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 6736 proven. 417 refuted. 0 times theorem prover too weak. 10331 trivial. 0 not checked. [2023-12-19 07:49:54,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:49:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 135 proven. 420 refuted. 0 times theorem prover too weak. 16929 trivial. 0 not checked. [2023-12-19 07:49:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:49:55,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148049982] [2023-12-19 07:49:55,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:49:55,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657473484] [2023-12-19 07:49:55,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657473484] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:49:55,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:49:55,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-12-19 07:49:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236859800] [2023-12-19 07:49:55,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:49:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 07:49:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:49:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 07:49:55,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-12-19 07:49:55,566 INFO L87 Difference]: Start difference. First operand 6817 states and 11064 transitions. Second operand has 30 states, 30 states have (on average 8.633333333333333) internal successors, (259), 30 states have internal predecessors, (259), 5 states have call successors, (165), 3 states have call predecessors, (165), 7 states have return successors, (166), 5 states have call predecessors, (166), 5 states have call successors, (166) [2023-12-19 07:51:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:51:51,693 INFO L93 Difference]: Finished difference Result 311276 states and 504090 transitions. [2023-12-19 07:51:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1544 states. [2023-12-19 07:51:51,694 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.633333333333333) internal successors, (259), 30 states have internal predecessors, (259), 5 states have call successors, (165), 3 states have call predecessors, (165), 7 states have return successors, (166), 5 states have call predecessors, (166), 5 states have call successors, (166) Word has length 624 [2023-12-19 07:51:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:51:52,729 INFO L225 Difference]: With dead ends: 311276 [2023-12-19 07:51:52,730 INFO L226 Difference]: Without dead ends: 303340 [2023-12-19 07:51:53,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2987 GetRequests, 1430 SyntacticMatches, 0 SemanticMatches, 1557 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232253 ImplicationChecksByTransitivity, 63.3s TimeCoverageRelationStatistics Valid=212470, Invalid=2216452, Unknown=0, NotChecked=0, Total=2428922 [2023-12-19 07:51:53,165 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 30886 mSDsluCounter, 18116 mSDsCounter, 0 mSdLazyCounter, 15379 mSolverCounterSat, 8192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30911 SdHoareTripleChecker+Valid, 18900 SdHoareTripleChecker+Invalid, 23571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8192 IncrementalHoareTripleChecker+Valid, 15379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:51:53,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30911 Valid, 18900 Invalid, 23571 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8192 Valid, 15379 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2023-12-19 07:51:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303340 states. [2023-12-19 07:51:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303340 to 27965. [2023-12-19 07:51:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27965 states, 24788 states have (on average 1.6211876714539293) internal successors, (40186), 24848 states have internal predecessors, (40186), 2776 states have call successors, (2776), 400 states have call predecessors, (2776), 400 states have return successors, (2776), 2716 states have call predecessors, (2776), 2776 states have call successors, (2776) [2023-12-19 07:51:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27965 states to 27965 states and 45738 transitions. [2023-12-19 07:51:59,050 INFO L78 Accepts]: Start accepts. Automaton has 27965 states and 45738 transitions. Word has length 624 [2023-12-19 07:51:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:51:59,051 INFO L495 AbstractCegarLoop]: Abstraction has 27965 states and 45738 transitions. [2023-12-19 07:51:59,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.633333333333333) internal successors, (259), 30 states have internal predecessors, (259), 5 states have call successors, (165), 3 states have call predecessors, (165), 7 states have return successors, (166), 5 states have call predecessors, (166), 5 states have call successors, (166) [2023-12-19 07:51:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 27965 states and 45738 transitions. [2023-12-19 07:51:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-19 07:51:59,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:51:59,067 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:59,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 07:51:59,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:51:59,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:51:59,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:51:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash 201213067, now seen corresponding path program 1 times [2023-12-19 07:51:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:51:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355443386] [2023-12-19 07:51:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:51:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:51:59,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:51:59,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422270251] [2023-12-19 07:51:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:51:59,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:51:59,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:51:59,322 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:51:59,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 07:51:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:51:59,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 07:51:59,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:52:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 6385 proven. 213 refuted. 0 times theorem prover too weak. 10886 trivial. 0 not checked. [2023-12-19 07:52:00,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:52:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 66 proven. 213 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:52:01,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:52:01,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355443386] [2023-12-19 07:52:01,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:52:01,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422270251] [2023-12-19 07:52:01,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422270251] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:52:01,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:52:01,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-19 07:52:01,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351041243] [2023-12-19 07:52:01,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:52:01,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 07:52:01,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:52:01,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 07:52:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:52:01,364 INFO L87 Difference]: Start difference. First operand 27965 states and 45738 transitions. Second operand has 20 states, 20 states have (on average 12.5) internal successors, (250), 20 states have internal predecessors, (250), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) [2023-12-19 07:52:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:52:51,001 INFO L93 Difference]: Finished difference Result 224099 states and 357745 transitions. [2023-12-19 07:52:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2023-12-19 07:52:51,003 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.5) internal successors, (250), 20 states have internal predecessors, (250), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) Word has length 624 [2023-12-19 07:52:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:52:51,674 INFO L225 Difference]: With dead ends: 224099 [2023-12-19 07:52:51,675 INFO L226 Difference]: Without dead ends: 195239 [2023-12-19 07:52:51,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1269 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40408 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=13472, Invalid=72670, Unknown=0, NotChecked=0, Total=86142 [2023-12-19 07:52:51,765 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 9705 mSDsluCounter, 7557 mSDsCounter, 0 mSdLazyCounter, 5908 mSolverCounterSat, 2208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9733 SdHoareTripleChecker+Valid, 7997 SdHoareTripleChecker+Invalid, 8116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2208 IncrementalHoareTripleChecker+Valid, 5908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:52:51,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9733 Valid, 7997 Invalid, 8116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2208 Valid, 5908 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-19 07:52:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195239 states. [2023-12-19 07:52:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195239 to 22311. [2023-12-19 07:52:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22311 states, 20114 states have (on average 1.6447250671174307) internal successors, (33082), 20142 states have internal predecessors, (33082), 1908 states have call successors, (1908), 288 states have call predecessors, (1908), 288 states have return successors, (1908), 1880 states have call predecessors, (1908), 1908 states have call successors, (1908) [2023-12-19 07:52:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22311 states to 22311 states and 36898 transitions. [2023-12-19 07:52:56,643 INFO L78 Accepts]: Start accepts. Automaton has 22311 states and 36898 transitions. Word has length 624 [2023-12-19 07:52:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:52:56,643 INFO L495 AbstractCegarLoop]: Abstraction has 22311 states and 36898 transitions. [2023-12-19 07:52:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.5) internal successors, (250), 20 states have internal predecessors, (250), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) [2023-12-19 07:52:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand 22311 states and 36898 transitions. [2023-12-19 07:52:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-19 07:52:56,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:52:56,661 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:56,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 07:52:56,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:52:56,871 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:52:56,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:52:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1185572343, now seen corresponding path program 1 times [2023-12-19 07:52:56,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:52:56,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088308148] [2023-12-19 07:52:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:52:56,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:52:56,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:52:56,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389728133] [2023-12-19 07:52:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:52:56,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:52:56,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:52:56,937 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:52:56,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 07:52:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:52:57,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:52:57,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:52:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 6765 proven. 207 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 07:52:57,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:52:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 72 proven. 207 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:52:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:52:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088308148] [2023-12-19 07:52:58,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:52:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389728133] [2023-12-19 07:52:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389728133] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:52:58,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:52:58,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:52:58,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259496122] [2023-12-19 07:52:58,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:52:58,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:52:58,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:52:58,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:52:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:52:58,243 INFO L87 Difference]: Start difference. First operand 22311 states and 36898 transitions. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-19 07:53:02,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:53:02,270 INFO L93 Difference]: Finished difference Result 46789 states and 76926 transitions. [2023-12-19 07:53:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 07:53:02,271 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) Word has length 624 [2023-12-19 07:53:02,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:53:02,307 INFO L225 Difference]: With dead ends: 46789 [2023-12-19 07:53:02,307 INFO L226 Difference]: Without dead ends: 24479 [2023-12-19 07:53:02,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1236 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:53:02,321 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1721 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:53:02,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1734 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 07:53:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24479 states. [2023-12-19 07:53:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24479 to 20371. [2023-12-19 07:53:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20371 states, 18326 states have (on average 1.6317799847211611) internal successors, (29904), 18350 states have internal predecessors, (29904), 1776 states have call successors, (1776), 268 states have call predecessors, (1776), 268 states have return successors, (1776), 1752 states have call predecessors, (1776), 1776 states have call successors, (1776) [2023-12-19 07:53:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20371 states to 20371 states and 33456 transitions. [2023-12-19 07:53:04,498 INFO L78 Accepts]: Start accepts. Automaton has 20371 states and 33456 transitions. Word has length 624 [2023-12-19 07:53:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:53:04,498 INFO L495 AbstractCegarLoop]: Abstraction has 20371 states and 33456 transitions. [2023-12-19 07:53:04,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-19 07:53:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20371 states and 33456 transitions. [2023-12-19 07:53:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-19 07:53:04,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:53:04,513 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:04,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 07:53:04,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:53:04,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:53:04,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:53:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2037332275, now seen corresponding path program 1 times [2023-12-19 07:53:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:53:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049431522] [2023-12-19 07:53:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:53:04,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:53:04,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264589360] [2023-12-19 07:53:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:53:04,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:53:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:53:04,766 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:53:04,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 07:53:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:53:05,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 07:53:05,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:53:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 6385 proven. 213 refuted. 0 times theorem prover too weak. 10886 trivial. 0 not checked. [2023-12-19 07:53:06,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:53:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 66 proven. 213 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-19 07:53:07,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:53:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049431522] [2023-12-19 07:53:07,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:53:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264589360] [2023-12-19 07:53:07,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264589360] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:53:07,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:53:07,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-12-19 07:53:07,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55032853] [2023-12-19 07:53:07,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:53:07,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 07:53:07,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:53:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 07:53:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-12-19 07:53:07,255 INFO L87 Difference]: Start difference. First operand 20371 states and 33456 transitions. Second operand has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) [2023-12-19 07:54:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:54:54,838 INFO L93 Difference]: Finished difference Result 280489 states and 446758 transitions. [2023-12-19 07:54:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 684 states. [2023-12-19 07:54:54,839 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) Word has length 624 [2023-12-19 07:54:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:54:55,489 INFO L225 Difference]: With dead ends: 280489 [2023-12-19 07:54:55,489 INFO L226 Difference]: Without dead ends: 259653 [2023-12-19 07:54:55,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2016 GetRequests, 1324 SyntacticMatches, 0 SemanticMatches, 692 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243991 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=60793, Invalid=420149, Unknown=0, NotChecked=0, Total=480942 [2023-12-19 07:54:55,590 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 15542 mSDsluCounter, 13266 mSDsCounter, 0 mSdLazyCounter, 10572 mSolverCounterSat, 3716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15575 SdHoareTripleChecker+Valid, 14226 SdHoareTripleChecker+Invalid, 14288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3716 IncrementalHoareTripleChecker+Valid, 10572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:54:55,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15575 Valid, 14226 Invalid, 14288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3716 Valid, 10572 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-19 07:54:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259653 states. [2023-12-19 07:55:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259653 to 24999. [2023-12-19 07:55:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24999 states, 22954 states have (on average 1.6565304522087654) internal successors, (38024), 22978 states have internal predecessors, (38024), 1776 states have call successors, (1776), 268 states have call predecessors, (1776), 268 states have return successors, (1776), 1752 states have call predecessors, (1776), 1776 states have call successors, (1776) [2023-12-19 07:55:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24999 states to 24999 states and 41576 transitions. [2023-12-19 07:55:01,101 INFO L78 Accepts]: Start accepts. Automaton has 24999 states and 41576 transitions. Word has length 624 [2023-12-19 07:55:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:55:01,101 INFO L495 AbstractCegarLoop]: Abstraction has 24999 states and 41576 transitions. [2023-12-19 07:55:01,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) [2023-12-19 07:55:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 24999 states and 41576 transitions. [2023-12-19 07:55:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-19 07:55:01,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:55:01,113 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:01,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-19 07:55:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:01,322 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:55:01,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:55:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1771848565, now seen corresponding path program 1 times [2023-12-19 07:55:01,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:55:01,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981092174] [2023-12-19 07:55:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:01,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:55:01,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:55:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721584519] [2023-12-19 07:55:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:01,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:55:01,366 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:55:01,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 07:55:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:55:01,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:55:01,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:55:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:55:02,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:55:02,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:55:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981092174] [2023-12-19 07:55:02,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:55:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721584519] [2023-12-19 07:55:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721584519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:55:02,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:55:02,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:55:02,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636211565] [2023-12-19 07:55:02,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:55:02,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:55:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:55:02,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:55:02,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:55:02,417 INFO L87 Difference]: Start difference. First operand 24999 states and 41576 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:55:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:55:05,141 INFO L93 Difference]: Finished difference Result 57638 states and 96201 transitions. [2023-12-19 07:55:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:55:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 624 [2023-12-19 07:55:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:55:05,197 INFO L225 Difference]: With dead ends: 57638 [2023-12-19 07:55:05,197 INFO L226 Difference]: Without dead ends: 32640 [2023-12-19 07:55:05,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 621 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 07:55:05,230 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 522 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:55:05,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1576 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:55:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32640 states. [2023-12-19 07:55:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32640 to 32326. [2023-12-19 07:55:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32326 states, 30171 states have (on average 1.6684564648172087) internal successors, (50339), 30195 states have internal predecessors, (50339), 1870 states have call successors, (1870), 284 states have call predecessors, (1870), 284 states have return successors, (1870), 1846 states have call predecessors, (1870), 1870 states have call successors, (1870) [2023-12-19 07:55:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32326 states to 32326 states and 54079 transitions. [2023-12-19 07:55:08,488 INFO L78 Accepts]: Start accepts. Automaton has 32326 states and 54079 transitions. Word has length 624 [2023-12-19 07:55:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:55:08,488 INFO L495 AbstractCegarLoop]: Abstraction has 32326 states and 54079 transitions. [2023-12-19 07:55:08,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:55:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32326 states and 54079 transitions. [2023-12-19 07:55:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-12-19 07:55:08,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:55:08,500 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:08,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 07:55:08,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 07:55:08,710 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:55:08,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:55:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2036442891, now seen corresponding path program 1 times [2023-12-19 07:55:08,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:55:08,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646654308] [2023-12-19 07:55:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:08,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:55:08,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:55:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580572246] [2023-12-19 07:55:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:08,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:08,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:55:08,809 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:55:08,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 07:55:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:55:09,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 07:55:09,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:55:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:55:09,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:55:09,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:55:09,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646654308] [2023-12-19 07:55:09,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:55:09,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580572246] [2023-12-19 07:55:09,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580572246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:55:09,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:55:09,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:55:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081821735] [2023-12-19 07:55:09,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:55:09,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:55:09,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:55:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:55:09,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:55:09,906 INFO L87 Difference]: Start difference. First operand 32326 states and 54079 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:55:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:55:15,157 INFO L93 Difference]: Finished difference Result 83454 states and 138915 transitions. [2023-12-19 07:55:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:55:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 626 [2023-12-19 07:55:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:55:15,246 INFO L225 Difference]: With dead ends: 83454 [2023-12-19 07:55:15,246 INFO L226 Difference]: Without dead ends: 58352 [2023-12-19 07:55:15,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:55:15,268 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 1138 mSDsluCounter, 3622 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 4642 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:55:15,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 4642 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:55:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58352 states. [2023-12-19 07:55:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58352 to 57722. [2023-12-19 07:55:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57722 states, 53523 states have (on average 1.6612858023653383) internal successors, (88917), 53571 states have internal predecessors, (88917), 3646 states have call successors, (3646), 552 states have call predecessors, (3646), 552 states have return successors, (3646), 3598 states have call predecessors, (3646), 3646 states have call successors, (3646) [2023-12-19 07:55:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57722 states to 57722 states and 96209 transitions. [2023-12-19 07:55:20,630 INFO L78 Accepts]: Start accepts. Automaton has 57722 states and 96209 transitions. Word has length 626 [2023-12-19 07:55:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:55:20,631 INFO L495 AbstractCegarLoop]: Abstraction has 57722 states and 96209 transitions. [2023-12-19 07:55:20,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:55:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 57722 states and 96209 transitions. [2023-12-19 07:55:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-12-19 07:55:20,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:55:20,643 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:20,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 07:55:20,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 07:55:20,852 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:55:20,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:55:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2000358967, now seen corresponding path program 1 times [2023-12-19 07:55:20,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:55:20,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943330969] [2023-12-19 07:55:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:55:20,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:55:20,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245960846] [2023-12-19 07:55:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:20,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:20,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:55:20,930 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:55:20,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 07:55:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:55:21,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:55:21,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:55:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:55:22,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:55:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:55:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943330969] [2023-12-19 07:55:22,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:55:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245960846] [2023-12-19 07:55:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245960846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:55:22,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:55:22,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:55:22,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164491754] [2023-12-19 07:55:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:55:22,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:55:22,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:55:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:55:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:55:22,265 INFO L87 Difference]: Start difference. First operand 57722 states and 96209 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:55:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:55:31,801 INFO L93 Difference]: Finished difference Result 159878 states and 265542 transitions. [2023-12-19 07:55:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:55:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 626 [2023-12-19 07:55:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:55:32,098 INFO L225 Difference]: With dead ends: 159878 [2023-12-19 07:55:32,099 INFO L226 Difference]: Without dead ends: 108990 [2023-12-19 07:55:32,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 623 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 07:55:32,149 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 576 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:55:32,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1580 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:55:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108990 states. [2023-12-19 07:55:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108990 to 108194. [2023-12-19 07:55:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108194 states, 99907 states have (on average 1.653988209034402) internal successors, (165245), 100003 states have internal predecessors, (165245), 7198 states have call successors, (7198), 1088 states have call predecessors, (7198), 1088 states have return successors, (7198), 7102 states have call predecessors, (7198), 7198 states have call successors, (7198) [2023-12-19 07:55:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108194 states to 108194 states and 179641 transitions. [2023-12-19 07:55:43,130 INFO L78 Accepts]: Start accepts. Automaton has 108194 states and 179641 transitions. Word has length 626 [2023-12-19 07:55:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:55:43,131 INFO L495 AbstractCegarLoop]: Abstraction has 108194 states and 179641 transitions. [2023-12-19 07:55:43,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:55:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 108194 states and 179641 transitions. [2023-12-19 07:55:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-12-19 07:55:43,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:55:43,147 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:43,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-19 07:55:43,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 07:55:43,356 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:55:43,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:55:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1629231961, now seen corresponding path program 1 times [2023-12-19 07:55:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:55:43,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891572913] [2023-12-19 07:55:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:55:43,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:55:43,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105013956] [2023-12-19 07:55:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:55:43,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:55:43,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:55:43,400 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:55:43,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 07:55:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:55:43,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:55:43,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:55:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:55:43,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:55:43,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:55:43,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891572913] [2023-12-19 07:55:43,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:55:43,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105013956] [2023-12-19 07:55:43,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105013956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:55:43,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:55:43,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:55:43,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007962887] [2023-12-19 07:55:43,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:55:43,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:55:43,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:55:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:55:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:55:43,968 INFO L87 Difference]: Start difference. First operand 108194 states and 179641 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:55:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:55:54,054 INFO L93 Difference]: Finished difference Result 214380 states and 354517 transitions. [2023-12-19 07:55:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:55:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 628 [2023-12-19 07:55:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:55:54,340 INFO L225 Difference]: With dead ends: 214380 [2023-12-19 07:55:54,341 INFO L226 Difference]: Without dead ends: 114034 [2023-12-19 07:55:54,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 626 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 07:55:54,425 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 26 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:55:54,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1051 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:55:54,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114034 states. [2023-12-19 07:56:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114034 to 112592. [2023-12-19 07:56:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112592 states, 104305 states have (on average 1.643708355304156) internal successors, (171447), 104401 states have internal predecessors, (171447), 7198 states have call successors, (7198), 1088 states have call predecessors, (7198), 1088 states have return successors, (7198), 7102 states have call predecessors, (7198), 7198 states have call successors, (7198) [2023-12-19 07:56:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112592 states to 112592 states and 185843 transitions. [2023-12-19 07:56:04,934 INFO L78 Accepts]: Start accepts. Automaton has 112592 states and 185843 transitions. Word has length 628 [2023-12-19 07:56:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:56:04,935 INFO L495 AbstractCegarLoop]: Abstraction has 112592 states and 185843 transitions. [2023-12-19 07:56:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:56:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 112592 states and 185843 transitions. [2023-12-19 07:56:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-12-19 07:56:04,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:56:04,950 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:04,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 07:56:05,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 07:56:05,160 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:56:05,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:56:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash -890727973, now seen corresponding path program 1 times [2023-12-19 07:56:05,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:56:05,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879835772] [2023-12-19 07:56:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:56:05,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:56:05,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:56:05,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429118569] [2023-12-19 07:56:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:56:05,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:56:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:56:05,206 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:56:05,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 07:56:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:56:05,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:56:05,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:56:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-12-19 07:56:06,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:56:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:56:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879835772] [2023-12-19 07:56:06,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:56:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429118569] [2023-12-19 07:56:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429118569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:56:06,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:56:06,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:56:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9395732] [2023-12-19 07:56:06,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:56:06,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:56:06,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:56:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:56:06,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:56:06,257 INFO L87 Difference]: Start difference. First operand 112592 states and 185843 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-12-19 07:56:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:56:24,716 INFO L93 Difference]: Finished difference Result 325342 states and 536581 transitions. [2023-12-19 07:56:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:56:24,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 628 [2023-12-19 07:56:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:56:25,509 INFO L225 Difference]: With dead ends: 325342 [2023-12-19 07:56:25,509 INFO L226 Difference]: Without dead ends: 218154 [2023-12-19 07:56:25,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 626 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 07:56:25,653 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 241 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:56:25,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1066 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:56:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218154 states.