/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:51:02,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:51:02,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:51:02,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:51:02,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:51:02,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:51:02,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:51:02,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:51:02,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:51:02,757 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:51:02,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:51:02,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:51:02,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:51:02,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:51:02,759 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:51:02,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:51:02,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:51:02,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:51:02,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:51:02,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:51:02,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:51:02,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:51:02,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:51:02,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:51:02,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:51:02,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:51:02,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:51:02,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:51:02,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:51:02,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:51:02,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:51:02,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:51:02,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:51:02,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:51:02,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:51:02,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:51:02,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:51:02,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:51:02,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:51:02,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:51:02,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:51:02,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:51:02,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:51:02,765 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:51:02,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:51:02,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:51:02,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:51:02,982 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:51:02,983 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:51:02,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i [2023-12-19 06:51:04,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:51:04,387 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:51:04,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i [2023-12-19 06:51:04,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b8a88f0/864b39e44cc6485983bae42b3722f1f0/FLAG08e2fb29e [2023-12-19 06:51:04,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b8a88f0/864b39e44cc6485983bae42b3722f1f0 [2023-12-19 06:51:04,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:51:04,415 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:51:04,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:51:04,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:51:04,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:51:04,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:04,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206b61b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04, skipping insertion in model container [2023-12-19 06:51:04,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:04,485 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:51:04,629 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-250_file-33.i[916,929] [2023-12-19 06:51:04,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:51:04,784 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:51:04,794 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-250_file-33.i[916,929] [2023-12-19 06:51:04,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:51:04,880 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:51:04,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04 WrapperNode [2023-12-19 06:51:04,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:51:04,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:51:04,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:51:04,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:51:04,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:04,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:04,959 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 612 [2023-12-19 06:51:04,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:51:04,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:51:04,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:51:04,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:51:04,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:04,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:04,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,036 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 06:51:05,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:51:05,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:51:05,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:51:05,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:51:05,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (1/1) ... [2023-12-19 06:51:05,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:51:05,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:05,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 06:51:05,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 06:51:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:51:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:51:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:51:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:51:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:51:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:51:05,258 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:51:05,260 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:51:05,946 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:51:05,988 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:51:05,988 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:51:05,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:51:05 BoogieIcfgContainer [2023-12-19 06:51:05,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:51:05,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:51:05,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:51:05,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:51:05,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:51:04" (1/3) ... [2023-12-19 06:51:05,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca26522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:51:05, skipping insertion in model container [2023-12-19 06:51:05,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:04" (2/3) ... [2023-12-19 06:51:05,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca26522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:51:05, skipping insertion in model container [2023-12-19 06:51:05,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:51:05" (3/3) ... [2023-12-19 06:51:05,995 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-33.i [2023-12-19 06:51:06,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:51:06,008 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:51:06,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:51:06,066 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;@4aa61d89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:51:06,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:51:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 150 states have (on average 1.6) internal successors, (240), 151 states have internal predecessors, (240), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-19 06:51:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 06:51:06,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:06,105 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:06,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:06,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash -278698716, now seen corresponding path program 1 times [2023-12-19 06:51:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:06,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013972773] [2023-12-19 06:51:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:06,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013972773] [2023-12-19 06:51:06,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:51:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101668107] [2023-12-19 06:51:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:06,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:06,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:06,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:06,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:51:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:06,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:51:06,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2023-12-19 06:51:06,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:51:06,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101668107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:51:06,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:51:06,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:51:06,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866648307] [2023-12-19 06:51:06,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:51:06,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:51:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:51:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:51:06,919 INFO L87 Difference]: Start difference. First operand has 239 states, 150 states have (on average 1.6) internal successors, (240), 151 states have internal predecessors, (240), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-19 06:51:06,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:07,000 INFO L93 Difference]: Finished difference Result 475 states and 908 transitions. [2023-12-19 06:51:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:51:07,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 529 [2023-12-19 06:51:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:07,016 INFO L225 Difference]: With dead ends: 475 [2023-12-19 06:51:07,016 INFO L226 Difference]: Without dead ends: 237 [2023-12-19 06:51:07,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:51:07,032 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:07,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 402 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:51:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-19 06:51:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-19 06:51:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 149 states have (on average 1.563758389261745) internal successors, (233), 149 states have internal predecessors, (233), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-19 06:51:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 405 transitions. [2023-12-19 06:51:07,109 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 405 transitions. Word has length 529 [2023-12-19 06:51:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:07,111 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 405 transitions. [2023-12-19 06:51:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-19 06:51:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 405 transitions. [2023-12-19 06:51:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 06:51:07,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:07,128 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:07,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:07,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 06:51:07,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:07,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:07,337 INFO L85 PathProgramCache]: Analyzing trace with hash -662099672, now seen corresponding path program 1 times [2023-12-19 06:51:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726523353] [2023-12-19 06:51:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:07,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:07,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538592909] [2023-12-19 06:51:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:07,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:07,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:07,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:51:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:07,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:51:07,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-19 06:51:07,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:51:07,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726523353] [2023-12-19 06:51:07,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:07,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538592909] [2023-12-19 06:51:07,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538592909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:51:07,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:51:07,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:51:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535795743] [2023-12-19 06:51:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:51:07,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:51:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:07,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:51:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:51:07,851 INFO L87 Difference]: Start difference. First operand 237 states and 405 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:07,934 INFO L93 Difference]: Finished difference Result 705 states and 1205 transitions. [2023-12-19 06:51:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:51:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 529 [2023-12-19 06:51:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:07,942 INFO L225 Difference]: With dead ends: 705 [2023-12-19 06:51:07,942 INFO L226 Difference]: Without dead ends: 469 [2023-12-19 06:51:07,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:51:07,945 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 387 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:07,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1094 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:51:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-19 06:51:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 467. [2023-12-19 06:51:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 292 states have (on average 1.5547945205479452) internal successors, (454), 292 states have internal predecessors, (454), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-19 06:51:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 798 transitions. [2023-12-19 06:51:08,016 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 798 transitions. Word has length 529 [2023-12-19 06:51:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:08,017 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 798 transitions. [2023-12-19 06:51:08,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 798 transitions. [2023-12-19 06:51:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 06:51:08,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:08,021 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:08,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:08,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 06:51:08,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:08,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash -600060058, now seen corresponding path program 1 times [2023-12-19 06:51:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22796642] [2023-12-19 06:51:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:08,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:08,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389490634] [2023-12-19 06:51:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:08,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:08,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:08,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:08,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:51:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:08,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 06:51:08,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-19 06:51:08,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:51:08,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22796642] [2023-12-19 06:51:08,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389490634] [2023-12-19 06:51:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389490634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:51:08,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:51:08,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:51:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232643313] [2023-12-19 06:51:08,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:51:08,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:51:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:08,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:51:08,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:51:08,698 INFO L87 Difference]: Start difference. First operand 467 states and 798 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:09,067 INFO L93 Difference]: Finished difference Result 1482 states and 2491 transitions. [2023-12-19 06:51:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:51:09,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 529 [2023-12-19 06:51:09,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:09,076 INFO L225 Difference]: With dead ends: 1482 [2023-12-19 06:51:09,076 INFO L226 Difference]: Without dead ends: 1016 [2023-12-19 06:51:09,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:51:09,079 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 581 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:09,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1360 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:51:09,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-19 06:51:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 717. [2023-12-19 06:51:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 460 states have (on average 1.5565217391304347) internal successors, (716), 462 states have internal predecessors, (716), 252 states have call successors, (252), 4 states have call predecessors, (252), 4 states have return successors, (252), 250 states have call predecessors, (252), 252 states have call successors, (252) [2023-12-19 06:51:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1220 transitions. [2023-12-19 06:51:09,148 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1220 transitions. Word has length 529 [2023-12-19 06:51:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:09,148 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1220 transitions. [2023-12-19 06:51:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1220 transitions. [2023-12-19 06:51:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 06:51:09,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:09,152 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:09,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:09,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:09,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:09,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:09,360 INFO L85 PathProgramCache]: Analyzing trace with hash -177358232, now seen corresponding path program 1 times [2023-12-19 06:51:09,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:09,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779233534] [2023-12-19 06:51:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:09,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:09,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330127901] [2023-12-19 06:51:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:09,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:09,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:09,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:51:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:09,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:51:09,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7365 proven. 135 refuted. 0 times theorem prover too weak. 7120 trivial. 0 not checked. [2023-12-19 06:51:10,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:51:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 120 proven. 135 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-19 06:51:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779233534] [2023-12-19 06:51:10,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330127901] [2023-12-19 06:51:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330127901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:51:10,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:51:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:51:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843552995] [2023-12-19 06:51:10,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:51:10,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:51:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:51:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:51:10,422 INFO L87 Difference]: Start difference. First operand 717 states and 1220 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-19 06:51:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:10,823 INFO L93 Difference]: Finished difference Result 1351 states and 2296 transitions. [2023-12-19 06:51:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:51:10,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 529 [2023-12-19 06:51:10,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:10,841 INFO L225 Difference]: With dead ends: 1351 [2023-12-19 06:51:10,841 INFO L226 Difference]: Without dead ends: 612 [2023-12-19 06:51:10,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1050 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:51:10,843 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 391 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:10,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 748 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:51:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2023-12-19 06:51:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 606. [2023-12-19 06:51:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 388 states have (on average 1.5438144329896908) internal successors, (599), 389 states have internal predecessors, (599), 212 states have call successors, (212), 5 states have call predecessors, (212), 5 states have return successors, (212), 211 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-19 06:51:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1023 transitions. [2023-12-19 06:51:10,897 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1023 transitions. Word has length 529 [2023-12-19 06:51:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:10,897 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 1023 transitions. [2023-12-19 06:51:10,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-19 06:51:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1023 transitions. [2023-12-19 06:51:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 06:51:10,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:10,901 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:10,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:11,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:11,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:11,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1310319259, now seen corresponding path program 1 times [2023-12-19 06:51:11,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:11,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406473813] [2023-12-19 06:51:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:11,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:11,146 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:11,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875232048] [2023-12-19 06:51:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:11,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:11,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:11,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:11,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:51:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:11,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:51:11,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-19 06:51:11,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:51:11,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:11,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406473813] [2023-12-19 06:51:11,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:11,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875232048] [2023-12-19 06:51:11,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875232048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:51:11,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:51:11,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 06:51:11,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061657342] [2023-12-19 06:51:11,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:51:11,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:51:11,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:51:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 06:51:11,644 INFO L87 Difference]: Start difference. First operand 606 states and 1023 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:12,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:12,868 INFO L93 Difference]: Finished difference Result 4075 states and 6859 transitions. [2023-12-19 06:51:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 06:51:12,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 530 [2023-12-19 06:51:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:12,885 INFO L225 Difference]: With dead ends: 4075 [2023-12-19 06:51:12,886 INFO L226 Difference]: Without dead ends: 3470 [2023-12-19 06:51:12,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:51:12,892 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 2221 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:12,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2221 Valid, 2453 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 06:51:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2023-12-19 06:51:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2728. [2023-12-19 06:51:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 1881 states have (on average 1.5789473684210527) internal successors, (2970), 1895 states have internal predecessors, (2970), 822 states have call successors, (822), 24 states have call predecessors, (822), 24 states have return successors, (822), 808 states have call predecessors, (822), 822 states have call successors, (822) [2023-12-19 06:51:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 4614 transitions. [2023-12-19 06:51:13,132 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 4614 transitions. Word has length 530 [2023-12-19 06:51:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:13,133 INFO L495 AbstractCegarLoop]: Abstraction has 2728 states and 4614 transitions. [2023-12-19 06:51:13,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 4614 transitions. [2023-12-19 06:51:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 06:51:13,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:13,140 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:13,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:13,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:13,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:13,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash 661455259, now seen corresponding path program 1 times [2023-12-19 06:51:13,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:13,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602218572] [2023-12-19 06:51:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:13,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:13,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:13,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675707838] [2023-12-19 06:51:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:13,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:13,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:13,394 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:13,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:51:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:13,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:51:13,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 5415 proven. 60 refuted. 0 times theorem prover too weak. 9145 trivial. 0 not checked. [2023-12-19 06:51:13,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:51:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 195 proven. 60 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-19 06:51:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602218572] [2023-12-19 06:51:14,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675707838] [2023-12-19 06:51:14,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675707838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:51:14,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:51:14,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:51:14,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15254120] [2023-12-19 06:51:14,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:51:14,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:51:14,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:14,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:51:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:51:14,021 INFO L87 Difference]: Start difference. First operand 2728 states and 4614 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-19 06:51:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:14,596 INFO L93 Difference]: Finished difference Result 5515 states and 9283 transitions. [2023-12-19 06:51:14,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:51:14,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 530 [2023-12-19 06:51:14,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:14,608 INFO L225 Difference]: With dead ends: 5515 [2023-12-19 06:51:14,608 INFO L226 Difference]: Without dead ends: 2788 [2023-12-19 06:51:14,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1052 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:51:14,614 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 611 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:14,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 754 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:51:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2023-12-19 06:51:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2744. [2023-12-19 06:51:14,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 1893 states have (on average 1.565768621236133) internal successors, (2964), 1907 states have internal predecessors, (2964), 822 states have call successors, (822), 28 states have call predecessors, (822), 28 states have return successors, (822), 808 states have call predecessors, (822), 822 states have call successors, (822) [2023-12-19 06:51:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4608 transitions. [2023-12-19 06:51:14,768 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4608 transitions. Word has length 530 [2023-12-19 06:51:14,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:14,769 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4608 transitions. [2023-12-19 06:51:14,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-19 06:51:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4608 transitions. [2023-12-19 06:51:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 06:51:14,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:14,773 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:14,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:14,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:14,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:14,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1027488483, now seen corresponding path program 1 times [2023-12-19 06:51:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044951904] [2023-12-19 06:51:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:15,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:15,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748066679] [2023-12-19 06:51:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:15,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:15,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:15,018 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:15,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:51:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:15,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:51:15,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-19 06:51:15,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:51:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044951904] [2023-12-19 06:51:15,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748066679] [2023-12-19 06:51:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748066679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:51:15,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:51:15,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 06:51:15,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176518157] [2023-12-19 06:51:15,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:51:15,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:51:15,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:15,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:51:15,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:51:15,450 INFO L87 Difference]: Start difference. First operand 2744 states and 4608 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:16,938 INFO L93 Difference]: Finished difference Result 7861 states and 13159 transitions. [2023-12-19 06:51:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:51:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 530 [2023-12-19 06:51:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:16,962 INFO L225 Difference]: With dead ends: 7861 [2023-12-19 06:51:16,962 INFO L226 Difference]: Without dead ends: 4818 [2023-12-19 06:51:16,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:51:16,973 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 1147 mSDsluCounter, 2969 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:16,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 3952 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 06:51:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2023-12-19 06:51:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 3282. [2023-12-19 06:51:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 2249 states have (on average 1.5562472209871054) internal successors, (3500), 2267 states have internal predecessors, (3500), 998 states have call successors, (998), 34 states have call predecessors, (998), 34 states have return successors, (998), 980 states have call predecessors, (998), 998 states have call successors, (998) [2023-12-19 06:51:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 5496 transitions. [2023-12-19 06:51:17,266 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 5496 transitions. Word has length 530 [2023-12-19 06:51:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:17,266 INFO L495 AbstractCegarLoop]: Abstraction has 3282 states and 5496 transitions. [2023-12-19 06:51:17,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 5496 transitions. [2023-12-19 06:51:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 06:51:17,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:17,272 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:17,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 06:51:17,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:17,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:17,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1023495515, now seen corresponding path program 1 times [2023-12-19 06:51:17,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:17,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472838716] [2023-12-19 06:51:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:17,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:17,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427256821] [2023-12-19 06:51:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:17,519 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:17,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:51:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:17,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:51:17,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-19 06:51:17,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:51:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472838716] [2023-12-19 06:51:17,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427256821] [2023-12-19 06:51:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427256821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:51:17,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:51:17,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 06:51:17,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209396567] [2023-12-19 06:51:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:51:17,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:51:17,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:51:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:51:17,931 INFO L87 Difference]: Start difference. First operand 3282 states and 5496 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:19,109 INFO L93 Difference]: Finished difference Result 8079 states and 13485 transitions. [2023-12-19 06:51:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 06:51:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 530 [2023-12-19 06:51:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:19,132 INFO L225 Difference]: With dead ends: 8079 [2023-12-19 06:51:19,132 INFO L226 Difference]: Without dead ends: 4710 [2023-12-19 06:51:19,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:51:19,142 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 895 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:19,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2826 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:51:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2023-12-19 06:51:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3961. [2023-12-19 06:51:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 2699 states have (on average 1.543905150055576) internal successors, (4167), 2723 states have internal predecessors, (4167), 1218 states have call successors, (1218), 43 states have call predecessors, (1218), 43 states have return successors, (1218), 1194 states have call predecessors, (1218), 1218 states have call successors, (1218) [2023-12-19 06:51:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 6603 transitions. [2023-12-19 06:51:19,455 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 6603 transitions. Word has length 530 [2023-12-19 06:51:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:19,456 INFO L495 AbstractCegarLoop]: Abstraction has 3961 states and 6603 transitions. [2023-12-19 06:51:19,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 6603 transitions. [2023-12-19 06:51:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 06:51:19,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:19,462 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:19,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 06:51:19,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:19,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1560435171, now seen corresponding path program 1 times [2023-12-19 06:51:19,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:19,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611120097] [2023-12-19 06:51:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:19,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:19,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818357011] [2023-12-19 06:51:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:19,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:19,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:19,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:51:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:19,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:51:19,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-19 06:51:20,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:51:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611120097] [2023-12-19 06:51:20,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:20,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818357011] [2023-12-19 06:51:20,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818357011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:51:20,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:51:20,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 06:51:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908821583] [2023-12-19 06:51:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:51:20,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:51:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:51:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:51:20,102 INFO L87 Difference]: Start difference. First operand 3961 states and 6603 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:21,510 INFO L93 Difference]: Finished difference Result 9364 states and 15574 transitions. [2023-12-19 06:51:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 06:51:21,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 530 [2023-12-19 06:51:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:21,546 INFO L225 Difference]: With dead ends: 9364 [2023-12-19 06:51:21,546 INFO L226 Difference]: Without dead ends: 5308 [2023-12-19 06:51:21,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:51:21,561 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1088 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:21,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 3466 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 06:51:21,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2023-12-19 06:51:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 3961. [2023-12-19 06:51:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 2699 states have (on average 1.543905150055576) internal successors, (4167), 2723 states have internal predecessors, (4167), 1218 states have call successors, (1218), 43 states have call predecessors, (1218), 43 states have return successors, (1218), 1194 states have call predecessors, (1218), 1218 states have call successors, (1218) [2023-12-19 06:51:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 6603 transitions. [2023-12-19 06:51:21,924 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 6603 transitions. Word has length 530 [2023-12-19 06:51:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:21,925 INFO L495 AbstractCegarLoop]: Abstraction has 3961 states and 6603 transitions. [2023-12-19 06:51:21,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-19 06:51:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 6603 transitions. [2023-12-19 06:51:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 06:51:21,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:21,929 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:21,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:22,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:22,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 490548827, now seen corresponding path program 1 times [2023-12-19 06:51:22,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:22,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165051597] [2023-12-19 06:51:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:22,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:22,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493106887] [2023-12-19 06:51:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:22,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:22,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:22,180 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:22,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:51:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:22,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 06:51:22,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 753 proven. 249 refuted. 0 times theorem prover too weak. 13618 trivial. 0 not checked. [2023-12-19 06:51:23,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:51:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 6 proven. 249 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-19 06:51:23,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:51:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165051597] [2023-12-19 06:51:23,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:51:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493106887] [2023-12-19 06:51:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493106887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:51:23,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:51:23,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-19 06:51:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617902837] [2023-12-19 06:51:23,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:51:23,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 06:51:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:51:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 06:51:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-19 06:51:23,477 INFO L87 Difference]: Start difference. First operand 3961 states and 6603 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (170), 2 states have call predecessors, (170), 2 states have call successors, (170) [2023-12-19 06:51:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:51:24,373 INFO L93 Difference]: Finished difference Result 7094 states and 11697 transitions. [2023-12-19 06:51:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 06:51:24,374 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (170), 2 states have call predecessors, (170), 2 states have call successors, (170) Word has length 530 [2023-12-19 06:51:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:51:24,387 INFO L225 Difference]: With dead ends: 7094 [2023-12-19 06:51:24,387 INFO L226 Difference]: Without dead ends: 3122 [2023-12-19 06:51:24,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1048 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:51:24,400 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1023 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:51:24,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1000 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 06:51:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2023-12-19 06:51:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2826. [2023-12-19 06:51:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 1958 states have (on average 1.5020429009193055) internal successors, (2941), 1972 states have internal predecessors, (2941), 800 states have call successors, (800), 67 states have call predecessors, (800), 67 states have return successors, (800), 786 states have call predecessors, (800), 800 states have call successors, (800) [2023-12-19 06:51:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4541 transitions. [2023-12-19 06:51:24,684 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4541 transitions. Word has length 530 [2023-12-19 06:51:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:51:24,684 INFO L495 AbstractCegarLoop]: Abstraction has 2826 states and 4541 transitions. [2023-12-19 06:51:24,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (170), 2 states have call predecessors, (170), 2 states have call successors, (170) [2023-12-19 06:51:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4541 transitions. [2023-12-19 06:51:24,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-19 06:51:24,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:51:24,690 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:51:24,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:51:24,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 06:51:24,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:51:24,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:51:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1170607197, now seen corresponding path program 1 times [2023-12-19 06:51:24,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:51:24,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981881307] [2023-12-19 06:51:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:51:24,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:51:24,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472066421] [2023-12-19 06:51:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:51:24,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:51:24,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:24,941 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:51:24,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:51:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:51:25,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-19 06:51:25,283 INFO L285 TraceCheckSpWp]: Computing forward predicates...