/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:02:59,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:02:59,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:02:59,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:02:59,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:02:59,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:02:59,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:02:59,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:02:59,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:02:59,430 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:02:59,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:02:59,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:02:59,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:02:59,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:02:59,432 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:02:59,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:02:59,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:02:59,432 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:02:59,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:02:59,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:02:59,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:02:59,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:02:59,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:02:59,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:02:59,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:02:59,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:02:59,434 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:02:59,434 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:02:59,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:02:59,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:02:59,435 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:02:59,435 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:02:59,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:02:59,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:02:59,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:02:59,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:02:59,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:02:59,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:02:59,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:02:59,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:02:59,587 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:02:59,588 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:02:59,588 INFO L431 ainManager$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-89.i [2023-12-16 03:03:00,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:03:00,945 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:03:00,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i [2023-12-16 03:03:00,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe41f0bc2/cabbb787e70a47f4b43e1327e3f290d3/FLAG8ed41ef68 [2023-12-16 03:03:00,976 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe41f0bc2/cabbb787e70a47f4b43e1327e3f290d3 [2023-12-16 03:03:00,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:03:00,980 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:03:00,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:03:00,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:03:00,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:03:00,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:03:00" (1/1) ... [2023-12-16 03:03:00,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3084947d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:00, skipping insertion in model container [2023-12-16 03:03:00,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:03:00" (1/1) ... [2023-12-16 03:03:01,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:03:01,176 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-89.i[916,929] [2023-12-16 03:03:01,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:03:01,360 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:03:01,370 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-89.i[916,929] [2023-12-16 03:03:01,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:03:01,444 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:03:01,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01 WrapperNode [2023-12-16 03:03:01,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:03:01,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:03:01,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:03:01,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:03:01,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,476 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,527 INFO L138 Inliner]: procedures = 26, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 693 [2023-12-16 03:03:01,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:03:01,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:03:01,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:03:01,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:03:01,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,613 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 03:03:01,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,675 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:03:01,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:03:01,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:03:01,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:03:01,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (1/1) ... [2023-12-16 03:03:01,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:03:01,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:01,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 03:03:01,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 03:03:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:03:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:03:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:03:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:03:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:03:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:03:01,884 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:03:01,886 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:03:02,585 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:03:02,632 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:03:02,632 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:03:02,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:03:02 BoogieIcfgContainer [2023-12-16 03:03:02,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:03:02,635 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:03:02,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:03:02,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:03:02,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:03:00" (1/3) ... [2023-12-16 03:03:02,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a876aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:03:02, skipping insertion in model container [2023-12-16 03:03:02,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:03:01" (2/3) ... [2023-12-16 03:03:02,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a876aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:03:02, skipping insertion in model container [2023-12-16 03:03:02,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:03:02" (3/3) ... [2023-12-16 03:03:02,641 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-89.i [2023-12-16 03:03:02,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:03:02,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:03:02,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:03:02,709 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;@46490fb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:03:02,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:03:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 185 states have (on average 1.6054054054054054) internal successors, (297), 186 states have internal predecessors, (297), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-16 03:03:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2023-12-16 03:03:02,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:02,740 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:02,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:02,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash 28251915, now seen corresponding path program 1 times [2023-12-16 03:03:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737970972] [2023-12-16 03:03:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:03,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:03,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182785056] [2023-12-16 03:03:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:03,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:03,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:03,062 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) [2023-12-16 03:03:03,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:03:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:03,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:03:03,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:03,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:03,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:03,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737970972] [2023-12-16 03:03:03,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:03,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182785056] [2023-12-16 03:03:03,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182785056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:03,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:03,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:03:03,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772194354] [2023-12-16 03:03:03,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:03,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:03:03,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:03:03,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:03:03,579 INFO L87 Difference]: Start difference. First operand has 283 states, 185 states have (on average 1.6054054054054054) internal successors, (297), 186 states have internal predecessors, (297), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:03,804 INFO L93 Difference]: Finished difference Result 1150 states and 2249 transitions. [2023-12-16 03:03:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:03:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 609 [2023-12-16 03:03:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:03,819 INFO L225 Difference]: With dead ends: 1150 [2023-12-16 03:03:03,819 INFO L226 Difference]: Without dead ends: 868 [2023-12-16 03:03:03,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:03:03,825 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 980 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:03,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 2374 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:03:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-16 03:03:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 860. [2023-12-16 03:03:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 617 states have (on average 1.633711507293355) internal successors, (1008), 619 states have internal predecessors, (1008), 238 states have call successors, (238), 4 states have call predecessors, (238), 4 states have return successors, (238), 236 states have call predecessors, (238), 238 states have call successors, (238) [2023-12-16 03:03:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1484 transitions. [2023-12-16 03:03:03,949 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1484 transitions. Word has length 609 [2023-12-16 03:03:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:03,950 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1484 transitions. [2023-12-16 03:03:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1484 transitions. [2023-12-16 03:03:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2023-12-16 03:03:03,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:03,987 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:03,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:04,187 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 [2023-12-16 03:03:04,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:04,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash -33787699, now seen corresponding path program 1 times [2023-12-16 03:03:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:04,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781683682] [2023-12-16 03:03:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:04,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:04,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037422687] [2023-12-16 03:03:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:04,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:04,274 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) [2023-12-16 03:03:04,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:03:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:04,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:03:04,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:05,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781683682] [2023-12-16 03:03:05,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037422687] [2023-12-16 03:03:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037422687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:05,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:05,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:03:05,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386060463] [2023-12-16 03:03:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:05,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:03:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:03:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:03:05,095 INFO L87 Difference]: Start difference. First operand 860 states and 1484 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:05,200 INFO L93 Difference]: Finished difference Result 2534 states and 4362 transitions. [2023-12-16 03:03:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:03:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 609 [2023-12-16 03:03:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:05,209 INFO L225 Difference]: With dead ends: 2534 [2023-12-16 03:03:05,210 INFO L226 Difference]: Without dead ends: 1675 [2023-12-16 03:03:05,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:03:05,212 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 211 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:05,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1133 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:03:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-12-16 03:03:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1671. [2023-12-16 03:03:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1186 states have (on average 1.612141652613828) internal successors, (1912), 1190 states have internal predecessors, (1912), 476 states have call successors, (476), 8 states have call predecessors, (476), 8 states have return successors, (476), 472 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-16 03:03:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2864 transitions. [2023-12-16 03:03:05,352 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2864 transitions. Word has length 609 [2023-12-16 03:03:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:05,353 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2864 transitions. [2023-12-16 03:03:05,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:05,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2864 transitions. [2023-12-16 03:03:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:05,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:05,358 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:05,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 03:03:05,565 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 [2023-12-16 03:03:05,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:05,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash -676990403, now seen corresponding path program 1 times [2023-12-16 03:03:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:05,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562438886] [2023-12-16 03:03:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:05,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:05,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513876590] [2023-12-16 03:03:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:05,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:05,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:05,681 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) [2023-12-16 03:03:05,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:03:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:05,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:03:05,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:05,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:05,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:05,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562438886] [2023-12-16 03:03:05,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:05,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513876590] [2023-12-16 03:03:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513876590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:05,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:03:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353683562] [2023-12-16 03:03:05,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:05,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:03:05,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:05,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:03:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:03:05,994 INFO L87 Difference]: Start difference. First operand 1671 states and 2864 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:06,120 INFO L93 Difference]: Finished difference Result 4995 states and 8558 transitions. [2023-12-16 03:03:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:03:06,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 610 [2023-12-16 03:03:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:06,134 INFO L225 Difference]: With dead ends: 4995 [2023-12-16 03:03:06,134 INFO L226 Difference]: Without dead ends: 3325 [2023-12-16 03:03:06,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:03:06,140 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 468 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:06,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 937 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:03:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2023-12-16 03:03:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3307. [2023-12-16 03:03:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 2338 states have (on average 1.5970915312232679) internal successors, (3734), 2346 states have internal predecessors, (3734), 952 states have call successors, (952), 16 states have call predecessors, (952), 16 states have return successors, (952), 944 states have call predecessors, (952), 952 states have call successors, (952) [2023-12-16 03:03:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5638 transitions. [2023-12-16 03:03:06,394 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5638 transitions. Word has length 610 [2023-12-16 03:03:06,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:06,396 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 5638 transitions. [2023-12-16 03:03:06,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5638 transitions. [2023-12-16 03:03:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:06,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:06,401 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:06,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 03:03:06,608 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 [2023-12-16 03:03:06,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:06,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash -676930821, now seen corresponding path program 1 times [2023-12-16 03:03:06,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:06,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151925227] [2023-12-16 03:03:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:06,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:06,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:06,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582356564] [2023-12-16 03:03:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:06,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:06,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:06,673 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) [2023-12-16 03:03:06,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:03:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:06,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 03:03:06,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:07,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:07,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151925227] [2023-12-16 03:03:07,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582356564] [2023-12-16 03:03:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582356564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:07,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:07,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:03:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429839109] [2023-12-16 03:03:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:07,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:03:07,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:07,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:03:07,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:03:07,027 INFO L87 Difference]: Start difference. First operand 3307 states and 5638 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:08,085 INFO L93 Difference]: Finished difference Result 13691 states and 23234 transitions. [2023-12-16 03:03:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 03:03:08,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 610 [2023-12-16 03:03:08,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:08,132 INFO L225 Difference]: With dead ends: 13691 [2023-12-16 03:03:08,132 INFO L226 Difference]: Without dead ends: 10283 [2023-12-16 03:03:08,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:03:08,148 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 1754 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:08,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 1869 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 03:03:08,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2023-12-16 03:03:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 10113. [2023-12-16 03:03:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10113 states, 7152 states have (on average 1.5796979865771812) internal successors, (11298), 7200 states have internal predecessors, (11298), 2896 states have call successors, (2896), 64 states have call predecessors, (2896), 64 states have return successors, (2896), 2848 states have call predecessors, (2896), 2896 states have call successors, (2896) [2023-12-16 03:03:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10113 states to 10113 states and 17090 transitions. [2023-12-16 03:03:08,712 INFO L78 Accepts]: Start accepts. Automaton has 10113 states and 17090 transitions. Word has length 610 [2023-12-16 03:03:08,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:08,712 INFO L495 AbstractCegarLoop]: Abstraction has 10113 states and 17090 transitions. [2023-12-16 03:03:08,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10113 states and 17090 transitions. [2023-12-16 03:03:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:08,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:08,720 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:08,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 03:03:08,927 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 [2023-12-16 03:03:08,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:08,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash 923448823, now seen corresponding path program 1 times [2023-12-16 03:03:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443981933] [2023-12-16 03:03:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:08,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492954658] [2023-12-16 03:03:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:08,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:08,989 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) [2023-12-16 03:03:09,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:03:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:09,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:03:09,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:09,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:09,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443981933] [2023-12-16 03:03:09,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:09,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492954658] [2023-12-16 03:03:09,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492954658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:09,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:09,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:03:09,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41070450] [2023-12-16 03:03:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:09,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:03:09,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:03:09,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:03:09,465 INFO L87 Difference]: Start difference. First operand 10113 states and 17090 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:09,828 INFO L93 Difference]: Finished difference Result 19569 states and 33009 transitions. [2023-12-16 03:03:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:03:09,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 610 [2023-12-16 03:03:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:09,898 INFO L225 Difference]: With dead ends: 19569 [2023-12-16 03:03:09,898 INFO L226 Difference]: Without dead ends: 9457 [2023-12-16 03:03:09,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:03:09,925 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 441 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:09,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1527 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:03:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9457 states. [2023-12-16 03:03:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9457 to 8061. [2023-12-16 03:03:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8061 states, 5868 states have (on average 1.5879345603271984) internal successors, (9318), 5884 states have internal predecessors, (9318), 2128 states have call successors, (2128), 64 states have call predecessors, (2128), 64 states have return successors, (2128), 2112 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-12-16 03:03:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8061 states to 8061 states and 13574 transitions. [2023-12-16 03:03:10,417 INFO L78 Accepts]: Start accepts. Automaton has 8061 states and 13574 transitions. Word has length 610 [2023-12-16 03:03:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:10,417 INFO L495 AbstractCegarLoop]: Abstraction has 8061 states and 13574 transitions. [2023-12-16 03:03:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8061 states and 13574 transitions. [2023-12-16 03:03:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:10,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:10,424 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:10,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 03:03:10,630 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 [2023-12-16 03:03:10,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:10,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:10,631 INFO L85 PathProgramCache]: Analyzing trace with hash 105800373, now seen corresponding path program 1 times [2023-12-16 03:03:10,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:10,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841809881] [2023-12-16 03:03:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:10,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:10,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:10,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788448780] [2023-12-16 03:03:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:10,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:10,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:10,670 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) [2023-12-16 03:03:10,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:03:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:10,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:03:11,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:12,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:12,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841809881] [2023-12-16 03:03:12,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788448780] [2023-12-16 03:03:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788448780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:12,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:12,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:03:12,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595778207] [2023-12-16 03:03:12,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:03:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:12,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:03:12,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:03:12,305 INFO L87 Difference]: Start difference. First operand 8061 states and 13574 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:12,557 INFO L93 Difference]: Finished difference Result 19726 states and 33154 transitions. [2023-12-16 03:03:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:03:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 610 [2023-12-16 03:03:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:12,593 INFO L225 Difference]: With dead ends: 19726 [2023-12-16 03:03:12,594 INFO L226 Difference]: Without dead ends: 11666 [2023-12-16 03:03:12,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:03:12,616 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 162 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:12,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 938 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:03:12,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2023-12-16 03:03:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 11462. [2023-12-16 03:03:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11462 states, 8173 states have (on average 1.5669888657775604) internal successors, (12807), 8197 states have internal predecessors, (12807), 3192 states have call successors, (3192), 96 states have call predecessors, (3192), 96 states have return successors, (3192), 3168 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-12-16 03:03:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11462 states to 11462 states and 19191 transitions. [2023-12-16 03:03:13,274 INFO L78 Accepts]: Start accepts. Automaton has 11462 states and 19191 transitions. Word has length 610 [2023-12-16 03:03:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:13,275 INFO L495 AbstractCegarLoop]: Abstraction has 11462 states and 19191 transitions. [2023-12-16 03:03:13,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 11462 states and 19191 transitions. [2023-12-16 03:03:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:13,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:13,283 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:13,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:13,495 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 [2023-12-16 03:03:13,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:13,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -403672717, now seen corresponding path program 1 times [2023-12-16 03:03:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616438732] [2023-12-16 03:03:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:13,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311882222] [2023-12-16 03:03:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:13,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:13,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:13,586 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) [2023-12-16 03:03:13,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:03:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:13,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:03:13,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 7764 proven. 87 refuted. 0 times theorem prover too weak. 10009 trivial. 0 not checked. [2023-12-16 03:03:14,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 195 proven. 87 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-16 03:03:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616438732] [2023-12-16 03:03:14,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311882222] [2023-12-16 03:03:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311882222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:03:14,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:03:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:03:14,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644462680] [2023-12-16 03:03:14,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:14,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:03:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:03:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:03:14,531 INFO L87 Difference]: Start difference. First operand 11462 states and 19191 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-16 03:03:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:15,342 INFO L93 Difference]: Finished difference Result 23259 states and 38693 transitions. [2023-12-16 03:03:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:03:15,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 610 [2023-12-16 03:03:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:15,371 INFO L225 Difference]: With dead ends: 23259 [2023-12-16 03:03:15,371 INFO L226 Difference]: Without dead ends: 11798 [2023-12-16 03:03:15,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1212 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:03:15,395 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 489 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:15,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 909 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 03:03:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11798 states. [2023-12-16 03:03:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11798 to 11558. [2023-12-16 03:03:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11558 states, 8245 states have (on average 1.5416616130988479) internal successors, (12711), 8269 states have internal predecessors, (12711), 3192 states have call successors, (3192), 120 states have call predecessors, (3192), 120 states have return successors, (3192), 3168 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-12-16 03:03:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11558 states to 11558 states and 19095 transitions. [2023-12-16 03:03:16,111 INFO L78 Accepts]: Start accepts. Automaton has 11558 states and 19095 transitions. Word has length 610 [2023-12-16 03:03:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:16,112 INFO L495 AbstractCegarLoop]: Abstraction has 11558 states and 19095 transitions. [2023-12-16 03:03:16,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-16 03:03:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 11558 states and 19095 transitions. [2023-12-16 03:03:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:16,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:16,119 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:16,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:16,326 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 [2023-12-16 03:03:16,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:16,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1548803473, now seen corresponding path program 1 times [2023-12-16 03:03:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:16,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678225751] [2023-12-16 03:03:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:16,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259187107] [2023-12-16 03:03:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:16,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:16,384 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) [2023-12-16 03:03:16,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:03:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:16,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:03:16,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 2382 proven. 18 refuted. 0 times theorem prover too weak. 15460 trivial. 0 not checked. [2023-12-16 03:03:16,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 264 proven. 18 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-16 03:03:17,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:17,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678225751] [2023-12-16 03:03:17,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:17,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259187107] [2023-12-16 03:03:17,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259187107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:03:17,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:03:17,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:03:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700522522] [2023-12-16 03:03:17,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:17,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:03:17,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:03:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:03:17,059 INFO L87 Difference]: Start difference. First operand 11558 states and 19095 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2023-12-16 03:03:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:17,799 INFO L93 Difference]: Finished difference Result 23499 states and 38549 transitions. [2023-12-16 03:03:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:03:17,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 610 [2023-12-16 03:03:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:17,835 INFO L225 Difference]: With dead ends: 23499 [2023-12-16 03:03:17,835 INFO L226 Difference]: Without dead ends: 11942 [2023-12-16 03:03:17,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1212 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:03:17,859 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 315 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:17,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 915 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:03:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11942 states. [2023-12-16 03:03:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11942 to 11654. [2023-12-16 03:03:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11654 states, 8317 states have (on average 1.528796441024408) internal successors, (12715), 8341 states have internal predecessors, (12715), 3192 states have call successors, (3192), 144 states have call predecessors, (3192), 144 states have return successors, (3192), 3168 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-12-16 03:03:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11654 states to 11654 states and 19099 transitions. [2023-12-16 03:03:18,705 INFO L78 Accepts]: Start accepts. Automaton has 11654 states and 19099 transitions. Word has length 610 [2023-12-16 03:03:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:18,706 INFO L495 AbstractCegarLoop]: Abstraction has 11654 states and 19099 transitions. [2023-12-16 03:03:18,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2023-12-16 03:03:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 11654 states and 19099 transitions. [2023-12-16 03:03:18,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:18,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:18,714 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:18,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-16 03:03:18,922 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 [2023-12-16 03:03:18,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:18,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash 940725489, now seen corresponding path program 1 times [2023-12-16 03:03:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:18,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167067830] [2023-12-16 03:03:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:18,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:18,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814930023] [2023-12-16 03:03:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:18,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:18,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:18,967 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) [2023-12-16 03:03:18,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 03:03:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:19,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:03:19,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:19,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:19,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:19,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167067830] [2023-12-16 03:03:19,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:19,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814930023] [2023-12-16 03:03:19,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814930023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:19,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:19,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:03:19,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143138948] [2023-12-16 03:03:19,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:03:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:03:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:03:19,402 INFO L87 Difference]: Start difference. First operand 11654 states and 19099 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:20,860 INFO L93 Difference]: Finished difference Result 42114 states and 68380 transitions. [2023-12-16 03:03:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:03:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 610 [2023-12-16 03:03:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:20,955 INFO L225 Difference]: With dead ends: 42114 [2023-12-16 03:03:20,956 INFO L226 Difference]: Without dead ends: 30461 [2023-12-16 03:03:20,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:03:20,986 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 670 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:20,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2083 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 03:03:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30461 states. [2023-12-16 03:03:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30461 to 30433. [2023-12-16 03:03:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30433 states, 20640 states have (on average 1.4678294573643411) internal successors, (30296), 20736 states have internal predecessors, (30296), 9384 states have call successors, (9384), 408 states have call predecessors, (9384), 408 states have return successors, (9384), 9288 states have call predecessors, (9384), 9384 states have call successors, (9384) [2023-12-16 03:03:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30433 states to 30433 states and 49064 transitions. [2023-12-16 03:03:22,808 INFO L78 Accepts]: Start accepts. Automaton has 30433 states and 49064 transitions. Word has length 610 [2023-12-16 03:03:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:22,810 INFO L495 AbstractCegarLoop]: Abstraction has 30433 states and 49064 transitions. [2023-12-16 03:03:22,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 30433 states and 49064 transitions. [2023-12-16 03:03:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:22,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:22,821 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:22,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-16 03:03:23,029 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 [2023-12-16 03:03:23,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:23,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:23,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1668690767, now seen corresponding path program 1 times [2023-12-16 03:03:23,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:23,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293399998] [2023-12-16 03:03:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:23,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:23,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:23,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205734936] [2023-12-16 03:03:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:23,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:23,074 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) [2023-12-16 03:03:23,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 03:03:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:23,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:03:23,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 652 proven. 3 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-12-16 03:03:23,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 279 proven. 3 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-16 03:03:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293399998] [2023-12-16 03:03:23,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205734936] [2023-12-16 03:03:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205734936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:03:23,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:03:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:03:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400973629] [2023-12-16 03:03:23,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:23,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:03:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:03:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:03:23,789 INFO L87 Difference]: Start difference. First operand 30433 states and 49064 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-16 03:03:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:25,405 INFO L93 Difference]: Finished difference Result 61969 states and 99183 transitions. [2023-12-16 03:03:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:03:25,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 610 [2023-12-16 03:03:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:25,486 INFO L225 Difference]: With dead ends: 61969 [2023-12-16 03:03:25,486 INFO L226 Difference]: Without dead ends: 31537 [2023-12-16 03:03:25,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1212 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:03:25,554 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 540 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:25,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 918 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 03:03:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31537 states. [2023-12-16 03:03:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31537 to 30625. [2023-12-16 03:03:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30625 states, 20784 states have (on average 1.4547729022324865) internal successors, (30236), 20880 states have internal predecessors, (30236), 9384 states have call successors, (9384), 456 states have call predecessors, (9384), 456 states have return successors, (9384), 9288 states have call predecessors, (9384), 9384 states have call successors, (9384) [2023-12-16 03:03:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30625 states to 30625 states and 49004 transitions. [2023-12-16 03:03:27,747 INFO L78 Accepts]: Start accepts. Automaton has 30625 states and 49004 transitions. Word has length 610 [2023-12-16 03:03:27,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:27,748 INFO L495 AbstractCegarLoop]: Abstraction has 30625 states and 49004 transitions. [2023-12-16 03:03:27,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-16 03:03:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 30625 states and 49004 transitions. [2023-12-16 03:03:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:27,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:27,758 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:27,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-16 03:03:28,098 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 [2023-12-16 03:03:28,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:28,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1449836049, now seen corresponding path program 1 times [2023-12-16 03:03:28,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:28,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851180202] [2023-12-16 03:03:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:28,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:28,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:28,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992817984] [2023-12-16 03:03:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:28,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:28,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:28,138 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) [2023-12-16 03:03:28,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 03:03:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:28,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:03:28,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8032 proven. 93 refuted. 0 times theorem prover too weak. 9735 trivial. 0 not checked. [2023-12-16 03:03:28,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 189 proven. 93 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-16 03:03:29,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:29,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851180202] [2023-12-16 03:03:29,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:29,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992817984] [2023-12-16 03:03:29,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992817984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:03:29,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:03:29,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:03:29,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336728330] [2023-12-16 03:03:29,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:29,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:03:29,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:03:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:03:29,057 INFO L87 Difference]: Start difference. First operand 30625 states and 49004 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-16 03:03:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:30,606 INFO L93 Difference]: Finished difference Result 62593 states and 99279 transitions. [2023-12-16 03:03:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:03:30,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 610 [2023-12-16 03:03:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:30,680 INFO L225 Difference]: With dead ends: 62593 [2023-12-16 03:03:30,680 INFO L226 Difference]: Without dead ends: 31969 [2023-12-16 03:03:30,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1212 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:03:30,733 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 268 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:30,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 906 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:03:30,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31969 states. [2023-12-16 03:03:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31969 to 30913. [2023-12-16 03:03:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30913 states, 21000 states have (on average 1.4432380952380952) internal successors, (30308), 21096 states have internal predecessors, (30308), 9384 states have call successors, (9384), 528 states have call predecessors, (9384), 528 states have return successors, (9384), 9288 states have call predecessors, (9384), 9384 states have call successors, (9384) [2023-12-16 03:03:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30913 states to 30913 states and 49076 transitions. [2023-12-16 03:03:32,826 INFO L78 Accepts]: Start accepts. Automaton has 30913 states and 49076 transitions. Word has length 610 [2023-12-16 03:03:32,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:32,828 INFO L495 AbstractCegarLoop]: Abstraction has 30913 states and 49076 transitions. [2023-12-16 03:03:32,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-16 03:03:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 30913 states and 49076 transitions. [2023-12-16 03:03:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:32,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:32,836 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:32,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:33,037 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 [2023-12-16 03:03:33,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:33,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash 850986541, now seen corresponding path program 1 times [2023-12-16 03:03:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:33,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87076807] [2023-12-16 03:03:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:33,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:33,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281130141] [2023-12-16 03:03:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:33,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:33,093 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) [2023-12-16 03:03:33,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 03:03:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:33,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:03:33,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-16 03:03:33,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:03:33,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:33,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87076807] [2023-12-16 03:03:33,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:33,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281130141] [2023-12-16 03:03:33,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281130141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:03:33,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:03:33,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:03:33,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588546261] [2023-12-16 03:03:33,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:03:33,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:03:33,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:03:33,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:03:33,550 INFO L87 Difference]: Start difference. First operand 30913 states and 49076 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:34,895 INFO L93 Difference]: Finished difference Result 62257 states and 98583 transitions. [2023-12-16 03:03:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:03:34,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 610 [2023-12-16 03:03:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:35,069 INFO L225 Difference]: With dead ends: 62257 [2023-12-16 03:03:35,069 INFO L226 Difference]: Without dead ends: 30913 [2023-12-16 03:03:35,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:03:35,162 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 2 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:35,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 924 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:03:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30913 states. [2023-12-16 03:03:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30913 to 30913. [2023-12-16 03:03:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30913 states, 21000 states have (on average 1.4386666666666668) internal successors, (30212), 21096 states have internal predecessors, (30212), 9384 states have call successors, (9384), 528 states have call predecessors, (9384), 528 states have return successors, (9384), 9288 states have call predecessors, (9384), 9384 states have call successors, (9384) [2023-12-16 03:03:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30913 states to 30913 states and 48980 transitions. [2023-12-16 03:03:37,110 INFO L78 Accepts]: Start accepts. Automaton has 30913 states and 48980 transitions. Word has length 610 [2023-12-16 03:03:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:37,110 INFO L495 AbstractCegarLoop]: Abstraction has 30913 states and 48980 transitions. [2023-12-16 03:03:37,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-16 03:03:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 30913 states and 48980 transitions. [2023-12-16 03:03:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:37,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:37,118 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:37,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:37,326 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 [2023-12-16 03:03:37,326 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:37,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash 788946927, now seen corresponding path program 1 times [2023-12-16 03:03:37,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:37,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732911186] [2023-12-16 03:03:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:37,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:37,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289997399] [2023-12-16 03:03:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:37,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:37,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:37,498 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) [2023-12-16 03:03:37,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 03:03:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:37,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 03:03:37,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 10810 proven. 333 refuted. 0 times theorem prover too weak. 6717 trivial. 0 not checked. [2023-12-16 03:03:38,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:39,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:39,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732911186] [2023-12-16 03:03:39,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:39,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289997399] [2023-12-16 03:03:39,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289997399] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 03:03:39,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 03:03:39,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-16 03:03:39,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190441560] [2023-12-16 03:03:39,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:39,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 03:03:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 03:03:39,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:03:39,295 INFO L87 Difference]: Start difference. First operand 30913 states and 48980 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 3 states have call successors, (95), 3 states have call predecessors, (95), 5 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-16 03:03:41,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:41,734 INFO L93 Difference]: Finished difference Result 64673 states and 100618 transitions. [2023-12-16 03:03:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 03:03:41,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 3 states have call successors, (95), 3 states have call predecessors, (95), 5 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 610 [2023-12-16 03:03:41,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:41,824 INFO L225 Difference]: With dead ends: 64673 [2023-12-16 03:03:41,824 INFO L226 Difference]: Without dead ends: 33761 [2023-12-16 03:03:41,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-12-16 03:03:41,889 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1041 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:41,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1476 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 03:03:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33761 states. [2023-12-16 03:03:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33761 to 32343. [2023-12-16 03:03:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32343 states, 21710 states have (on average 1.4028558268079225) internal successors, (30456), 21806 states have internal predecessors, (30456), 9816 states have call successors, (9816), 816 states have call predecessors, (9816), 816 states have return successors, (9816), 9720 states have call predecessors, (9816), 9816 states have call successors, (9816) [2023-12-16 03:03:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32343 states to 32343 states and 50088 transitions. [2023-12-16 03:03:43,999 INFO L78 Accepts]: Start accepts. Automaton has 32343 states and 50088 transitions. Word has length 610 [2023-12-16 03:03:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:44,000 INFO L495 AbstractCegarLoop]: Abstraction has 32343 states and 50088 transitions. [2023-12-16 03:03:44,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 3 states have call successors, (95), 3 states have call predecessors, (95), 5 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-16 03:03:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 32343 states and 50088 transitions. [2023-12-16 03:03:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-16 03:03:44,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:44,008 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:44,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-16 03:03:44,216 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 [2023-12-16 03:03:44,216 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:44,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1048695977, now seen corresponding path program 1 times [2023-12-16 03:03:44,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:44,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217982297] [2023-12-16 03:03:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:44,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:44,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:44,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085889141] [2023-12-16 03:03:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:44,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:44,252 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) [2023-12-16 03:03:44,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 03:03:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:44,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:03:44,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 6054 proven. 222 refuted. 0 times theorem prover too weak. 11584 trivial. 0 not checked. [2023-12-16 03:03:45,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 60 proven. 222 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-16 03:03:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:45,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217982297] [2023-12-16 03:03:45,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085889141] [2023-12-16 03:03:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085889141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:03:45,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:03:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 03:03:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751927985] [2023-12-16 03:03:45,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:45,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 03:03:45,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 03:03:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:03:45,465 INFO L87 Difference]: Start difference. First operand 32343 states and 50088 transitions. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 3 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (170), 3 states have call predecessors, (170), 3 states have call successors, (170) [2023-12-16 03:03:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:47,572 INFO L93 Difference]: Finished difference Result 66605 states and 101951 transitions. [2023-12-16 03:03:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:03:47,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 3 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (170), 3 states have call predecessors, (170), 3 states have call successors, (170) Word has length 610 [2023-12-16 03:03:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:47,660 INFO L225 Difference]: With dead ends: 66605 [2023-12-16 03:03:47,661 INFO L226 Difference]: Without dead ends: 34263 [2023-12-16 03:03:47,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:03:47,719 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 653 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:47,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 807 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 03:03:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34263 states. [2023-12-16 03:03:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34263 to 32919. [2023-12-16 03:03:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32919 states, 22142 states have (on average 1.3904796314696053) internal successors, (30788), 22238 states have internal predecessors, (30788), 9816 states have call successors, (9816), 960 states have call predecessors, (9816), 960 states have return successors, (9816), 9720 states have call predecessors, (9816), 9816 states have call successors, (9816) [2023-12-16 03:03:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32919 states to 32919 states and 50420 transitions. [2023-12-16 03:03:49,881 INFO L78 Accepts]: Start accepts. Automaton has 32919 states and 50420 transitions. Word has length 610 [2023-12-16 03:03:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:03:49,881 INFO L495 AbstractCegarLoop]: Abstraction has 32919 states and 50420 transitions. [2023-12-16 03:03:49,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 3 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (170), 3 states have call predecessors, (170), 3 states have call successors, (170) [2023-12-16 03:03:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 32919 states and 50420 transitions. [2023-12-16 03:03:49,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2023-12-16 03:03:49,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:03:49,889 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:03:49,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 03:03:50,097 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 [2023-12-16 03:03:50,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:03:50,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:03:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1592005981, now seen corresponding path program 1 times [2023-12-16 03:03:50,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:03:50,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649806957] [2023-12-16 03:03:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:03:50,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:03:50,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40021462] [2023-12-16 03:03:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:03:50,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:03:50,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:03:50,161 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) [2023-12-16 03:03:50,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 03:03:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:03:50,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 03:03:50,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:03:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 7834 proven. 192 refuted. 0 times theorem prover too weak. 9834 trivial. 0 not checked. [2023-12-16 03:03:51,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:03:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 90 proven. 192 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-16 03:03:52,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:03:52,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649806957] [2023-12-16 03:03:52,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:03:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40021462] [2023-12-16 03:03:52,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40021462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:03:52,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:03:52,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2023-12-16 03:03:52,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340670481] [2023-12-16 03:03:52,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:03:52,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 03:03:52,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:03:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 03:03:52,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:03:52,457 INFO L87 Difference]: Start difference. First operand 32919 states and 50420 transitions. Second operand has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 4 states have call successors, (190), 3 states have call predecessors, (190), 5 states have return successors, (190), 4 states have call predecessors, (190), 4 states have call successors, (190) [2023-12-16 03:03:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:03:58,389 INFO L93 Difference]: Finished difference Result 132921 states and 203524 transitions. [2023-12-16 03:03:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 03:03:58,389 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 4 states have call successors, (190), 3 states have call predecessors, (190), 5 states have return successors, (190), 4 states have call predecessors, (190), 4 states have call successors, (190) Word has length 611 [2023-12-16 03:03:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:03:58,640 INFO L225 Difference]: With dead ends: 132921 [2023-12-16 03:03:58,640 INFO L226 Difference]: Without dead ends: 100003 [2023-12-16 03:03:58,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1213 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2023-12-16 03:03:58,711 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1861 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:03:58,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 3071 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 03:03:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100003 states. Received shutdown request... [2023-12-16 03:04:00,145 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 03:04:00,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 03:04:00,191 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:04:00,191 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:04:00,353 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 [2023-12-16 03:04:00,353 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 03:04:00,357 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:04:00,359 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 03:04:00,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:04:00 BoogieIcfgContainer [2023-12-16 03:04:00,360 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 03:04:00,361 INFO L158 Benchmark]: Toolchain (without parser) took 59380.63ms. Allocated memory was 266.3MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 218.9MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-16 03:04:00,361 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 03:04:00,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.42ms. Allocated memory is still 266.3MB. Free memory was 218.9MB in the beginning and 187.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 03:04:00,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.63ms. Allocated memory is still 266.3MB. Free memory was 187.5MB in the beginning and 173.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 03:04:00,362 INFO L158 Benchmark]: Boogie Preprocessor took 182.73ms. Allocated memory is still 266.3MB. Free memory was 173.8MB in the beginning and 216.0MB in the end (delta: -42.2MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2023-12-16 03:04:00,362 INFO L158 Benchmark]: RCFGBuilder took 921.62ms. Allocated memory is still 266.3MB. Free memory was 216.0MB in the beginning and 134.2MB in the end (delta: 81.8MB). Peak memory consumption was 81.8MB. Max. memory is 8.0GB. [2023-12-16 03:04:00,362 INFO L158 Benchmark]: TraceAbstraction took 57725.14ms. Allocated memory was 266.3MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 133.7MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-12-16 03:04:00,363 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 466.42ms. Allocated memory is still 266.3MB. Free memory was 218.9MB in the beginning and 187.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.63ms. Allocated memory is still 266.3MB. Free memory was 187.5MB in the beginning and 173.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 182.73ms. Allocated memory is still 266.3MB. Free memory was 173.8MB in the beginning and 216.0MB in the end (delta: -42.2MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * RCFGBuilder took 921.62ms. Allocated memory is still 266.3MB. Free memory was 216.0MB in the beginning and 134.2MB in the end (delta: 81.8MB). Peak memory consumption was 81.8MB. Max. memory is 8.0GB. * TraceAbstraction took 57725.14ms. Allocated memory was 266.3MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 133.7MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 283 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.7s, OverallIterations: 15, TraceHistogramMax: 95, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10375 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9855 mSDsluCounter, 20787 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12859 mSDsCounter, 1647 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6497 IncrementalHoareTripleChecker+Invalid, 8144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1647 mSolverCounterUnsat, 7928 mSDtfsCounter, 6497 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12922 GetRequests, 12815 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32919occurred in iteration=14, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.5s AutomataMinimizationTime, 15 MinimizatonAttempts, 7086 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 9149 NumberOfCodeBlocks, 9149 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 12789 ConstructedInterpolants, 0 QuantifiedInterpolants, 33153 SizeOfPredicates, 31 NumberOfNonLiveVariables, 20716 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 373497/375060 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown