/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-22.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:57:25,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:57:25,492 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:57:25,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:57:25,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:57:25,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:57:25,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:57:25,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:57:25,532 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:57:25,535 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:57:25,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:57:25,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:57:25,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:57:25,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:57:25,537 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:57:25,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:57:25,538 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:57:25,538 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:57:25,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:57:25,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:57:25,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:57:25,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:57:25,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:57:25,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:57:25,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:57:25,541 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:57:25,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:57:25,541 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:57:25,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:57:25,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:57:25,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:57:25,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:57:25,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:57:25,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:57:25,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:57:25,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:57:25,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:57:25,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:57:25,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:57:25,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:57:25,544 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:57:25,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:57:25,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:57:25,545 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:57:25,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:57:25,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:57:25,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:57:25,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:57:25,825 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:57:25,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-22.i [2023-12-16 02:57:26,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:57:27,165 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:57:27,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-22.i [2023-12-16 02:57:27,181 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b399346d4/2f62c02e3d1d49d1af9661a46aa9d95f/FLAGa8225d488 [2023-12-16 02:57:27,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b399346d4/2f62c02e3d1d49d1af9661a46aa9d95f [2023-12-16 02:57:27,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:57:27,198 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:57:27,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:57:27,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:57:27,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:57:27,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ffd535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27, skipping insertion in model container [2023-12-16 02:57:27,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:57:27,376 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-22.i[916,929] [2023-12-16 02:57:27,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:57:27,580 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:57:27,594 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-22.i[916,929] [2023-12-16 02:57:27,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:57:27,727 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:57:27,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27 WrapperNode [2023-12-16 02:57:27,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:57:27,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:57:27,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:57:27,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:57:27,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,872 INFO L138 Inliner]: procedures = 26, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 828 [2023-12-16 02:57:27,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:57:27,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:57:27,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:57:27,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:57:27,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,897 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,941 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:57:27,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:27,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:28,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:28,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:57:28,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:57:28,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:57:28,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:57:28,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (1/1) ... [2023-12-16 02:57:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:57:28,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:28,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:57:28,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:57:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:57:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:57:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:57:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:57:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:57:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:57:28,226 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:57:28,228 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:57:29,118 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:57:29,195 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:57:29,196 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:57:29,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:57:29 BoogieIcfgContainer [2023-12-16 02:57:29,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:57:29,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:57:29,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:57:29,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:57:29,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:57:27" (1/3) ... [2023-12-16 02:57:29,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276d667e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:57:29, skipping insertion in model container [2023-12-16 02:57:29,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:57:27" (2/3) ... [2023-12-16 02:57:29,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276d667e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:57:29, skipping insertion in model container [2023-12-16 02:57:29,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:57:29" (3/3) ... [2023-12-16 02:57:29,230 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-22.i [2023-12-16 02:57:29,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:57:29,247 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:57:29,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:57:29,308 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;@791d9d41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:57:29,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:57:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 203 states have (on average 1.5714285714285714) internal successors, (319), 204 states have internal predecessors, (319), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-16 02:57:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-16 02:57:29,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:29,367 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:29,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:29,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2142855553, now seen corresponding path program 1 times [2023-12-16 02:57:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593913652] [2023-12-16 02:57:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:29,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:29,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593913652] [2023-12-16 02:57:29,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:57:29,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12500175] [2023-12-16 02:57:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:29,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:29,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:29,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:57:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:30,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:57:30,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 29768 trivial. 0 not checked. [2023-12-16 02:57:30,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12500175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:30,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:30,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:57:30,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557293324] [2023-12-16 02:57:30,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:57:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:57:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:57:30,454 INFO L87 Difference]: Start difference. First operand has 329 states, 203 states have (on average 1.5714285714285714) internal successors, (319), 204 states have internal predecessors, (319), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-16 02:57:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:30,554 INFO L93 Difference]: Finished difference Result 655 states and 1251 transitions. [2023-12-16 02:57:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:57:30,557 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 2 states have call successors, (123) Word has length 768 [2023-12-16 02:57:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:30,568 INFO L225 Difference]: With dead ends: 655 [2023-12-16 02:57:30,568 INFO L226 Difference]: Without dead ends: 327 [2023-12-16 02:57:30,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:57:30,610 INFO L413 NwaCegarLoop]: 556 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, 556 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 [2023-12-16 02:57:30,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:57:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-16 02:57:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2023-12-16 02:57:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 202 states have (on average 1.5495049504950495) internal successors, (313), 202 states have internal predecessors, (313), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-16 02:57:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 559 transitions. [2023-12-16 02:57:30,720 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 559 transitions. Word has length 768 [2023-12-16 02:57:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:30,722 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 559 transitions. [2023-12-16 02:57:30,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-16 02:57:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 559 transitions. [2023-12-16 02:57:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-16 02:57:30,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:30,747 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:30,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:30,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 02:57:30,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:30,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1377435875, now seen corresponding path program 1 times [2023-12-16 02:57:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182131808] [2023-12-16 02:57:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:31,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:31,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456456268] [2023-12-16 02:57:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:31,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:31,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:31,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:31,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:57:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:31,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:57:31,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-16 02:57:31,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:31,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:31,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182131808] [2023-12-16 02:57:31,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:31,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456456268] [2023-12-16 02:57:31,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456456268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:31,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:31,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:57:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385920874] [2023-12-16 02:57:31,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:31,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:57:31,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:57:31,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:31,663 INFO L87 Difference]: Start difference. First operand 327 states and 559 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:31,772 INFO L93 Difference]: Finished difference Result 814 states and 1400 transitions. [2023-12-16 02:57:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:57:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 768 [2023-12-16 02:57:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:31,779 INFO L225 Difference]: With dead ends: 814 [2023-12-16 02:57:31,779 INFO L226 Difference]: Without dead ends: 488 [2023-12-16 02:57:31,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:31,782 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 255 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:31,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1155 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 02:57:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-16 02:57:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 485. [2023-12-16 02:57:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 336 states have (on average 1.6160714285714286) internal successors, (543), 337 states have internal predecessors, (543), 146 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (146), 145 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-16 02:57:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 835 transitions. [2023-12-16 02:57:31,835 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 835 transitions. Word has length 768 [2023-12-16 02:57:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:31,837 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 835 transitions. [2023-12-16 02:57:31,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 835 transitions. [2023-12-16 02:57:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-16 02:57:31,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:31,845 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:31,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:32,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 02:57:32,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:32,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash 747616093, now seen corresponding path program 1 times [2023-12-16 02:57:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:32,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632680865] [2023-12-16 02:57:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:32,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:32,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456095687] [2023-12-16 02:57:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:32,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:32,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:32,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:32,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:57:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:32,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:57:32,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-16 02:57:32,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632680865] [2023-12-16 02:57:32,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456095687] [2023-12-16 02:57:32,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456095687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:32,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:32,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:57:32,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022297671] [2023-12-16 02:57:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:32,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:57:32,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:32,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:57:32,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:32,665 INFO L87 Difference]: Start difference. First operand 485 states and 835 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:32,767 INFO L93 Difference]: Finished difference Result 1285 states and 2218 transitions. [2023-12-16 02:57:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:57:32,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 768 [2023-12-16 02:57:32,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:32,780 INFO L225 Difference]: With dead ends: 1285 [2023-12-16 02:57:32,780 INFO L226 Difference]: Without dead ends: 801 [2023-12-16 02:57:32,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:32,784 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 296 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:32,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1074 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:57:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-12-16 02:57:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 798. [2023-12-16 02:57:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 589 states have (on average 1.633276740237691) internal successors, (962), 592 states have internal predecessors, (962), 204 states have call successors, (204), 4 states have call predecessors, (204), 4 states have return successors, (204), 201 states have call predecessors, (204), 204 states have call successors, (204) [2023-12-16 02:57:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1370 transitions. [2023-12-16 02:57:32,854 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1370 transitions. Word has length 768 [2023-12-16 02:57:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:32,855 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1370 transitions. [2023-12-16 02:57:32,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1370 transitions. [2023-12-16 02:57:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-16 02:57:32,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:32,863 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:32,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:33,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:33,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:33,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:33,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1675513689, now seen corresponding path program 1 times [2023-12-16 02:57:33,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:33,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814961406] [2023-12-16 02:57:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:33,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:33,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083851428] [2023-12-16 02:57:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:33,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:33,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:33,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:33,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:57:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:33,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:57:33,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-16 02:57:33,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:33,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:33,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814961406] [2023-12-16 02:57:33,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:33,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083851428] [2023-12-16 02:57:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083851428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:33,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:57:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004761691] [2023-12-16 02:57:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:33,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:57:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:33,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:57:33,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:33,731 INFO L87 Difference]: Start difference. First operand 798 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:33,822 INFO L93 Difference]: Finished difference Result 2187 states and 3750 transitions. [2023-12-16 02:57:33,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:57:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 768 [2023-12-16 02:57:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:33,832 INFO L225 Difference]: With dead ends: 2187 [2023-12-16 02:57:33,832 INFO L226 Difference]: Without dead ends: 1390 [2023-12-16 02:57:33,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:33,837 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 258 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:33,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1087 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:57:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-12-16 02:57:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1387. [2023-12-16 02:57:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1056 states have (on average 1.6297348484848484) internal successors, (1721), 1063 states have internal predecessors, (1721), 322 states have call successors, (322), 8 states have call predecessors, (322), 8 states have return successors, (322), 315 states have call predecessors, (322), 322 states have call successors, (322) [2023-12-16 02:57:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2365 transitions. [2023-12-16 02:57:33,934 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2365 transitions. Word has length 768 [2023-12-16 02:57:33,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:33,937 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 2365 transitions. [2023-12-16 02:57:33,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2365 transitions. [2023-12-16 02:57:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-16 02:57:33,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:33,945 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:33,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:34,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:34,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:34,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:34,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1838694553, now seen corresponding path program 1 times [2023-12-16 02:57:34,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:34,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007427836] [2023-12-16 02:57:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:34,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:34,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281247927] [2023-12-16 02:57:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:34,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:34,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:34,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:34,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:57:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:34,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:57:34,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-16 02:57:34,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:34,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:34,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007427836] [2023-12-16 02:57:34,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:34,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281247927] [2023-12-16 02:57:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281247927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:34,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:34,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:57:34,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610811154] [2023-12-16 02:57:34,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:34,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:57:34,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:57:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:34,766 INFO L87 Difference]: Start difference. First operand 1387 states and 2365 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:34,888 INFO L93 Difference]: Finished difference Result 4143 states and 7065 transitions. [2023-12-16 02:57:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:57:34,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 768 [2023-12-16 02:57:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:34,904 INFO L225 Difference]: With dead ends: 4143 [2023-12-16 02:57:34,904 INFO L226 Difference]: Without dead ends: 2757 [2023-12-16 02:57:34,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:34,909 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 514 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:34,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1479 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:57:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2023-12-16 02:57:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2755. [2023-12-16 02:57:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2094 states have (on average 1.6217765042979944) internal successors, (3396), 2108 states have internal predecessors, (3396), 644 states have call successors, (644), 16 states have call predecessors, (644), 16 states have return successors, (644), 630 states have call predecessors, (644), 644 states have call successors, (644) [2023-12-16 02:57:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 4684 transitions. [2023-12-16 02:57:35,103 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 4684 transitions. Word has length 768 [2023-12-16 02:57:35,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:35,105 INFO L495 AbstractCegarLoop]: Abstraction has 2755 states and 4684 transitions. [2023-12-16 02:57:35,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 4684 transitions. [2023-12-16 02:57:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-16 02:57:35,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:35,131 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:35,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:35,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:35,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:35,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1070069349, now seen corresponding path program 1 times [2023-12-16 02:57:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545003329] [2023-12-16 02:57:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:35,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:35,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502172517] [2023-12-16 02:57:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:35,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:35,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:35,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:35,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:57:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:35,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:57:35,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-16 02:57:37,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:37,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545003329] [2023-12-16 02:57:37,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502172517] [2023-12-16 02:57:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502172517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:37,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:37,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:57:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779787195] [2023-12-16 02:57:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:57:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:37,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:57:37,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:37,595 INFO L87 Difference]: Start difference. First operand 2755 states and 4684 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:37,745 INFO L93 Difference]: Finished difference Result 6329 states and 10840 transitions. [2023-12-16 02:57:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:57:37,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 768 [2023-12-16 02:57:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:37,765 INFO L225 Difference]: With dead ends: 6329 [2023-12-16 02:57:37,765 INFO L226 Difference]: Without dead ends: 3575 [2023-12-16 02:57:37,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:37,776 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 164 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:37,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1105 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:57:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2023-12-16 02:57:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3575. [2023-12-16 02:57:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 2788 states have (on average 1.6488522238163559) internal successors, (4597), 2802 states have internal predecessors, (4597), 767 states have call successors, (767), 19 states have call predecessors, (767), 19 states have return successors, (767), 753 states have call predecessors, (767), 767 states have call successors, (767) [2023-12-16 02:57:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 6131 transitions. [2023-12-16 02:57:38,012 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 6131 transitions. Word has length 768 [2023-12-16 02:57:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:38,013 INFO L495 AbstractCegarLoop]: Abstraction has 3575 states and 6131 transitions. [2023-12-16 02:57:38,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 6131 transitions. [2023-12-16 02:57:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:57:38,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:38,023 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:38,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:38,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:38,233 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:38,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1039694745, now seen corresponding path program 1 times [2023-12-16 02:57:38,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:38,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865659995] [2023-12-16 02:57:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:38,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:38,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:38,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861844478] [2023-12-16 02:57:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:38,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:38,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:38,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:38,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:57:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:38,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:57:38,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-16 02:57:40,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:40,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:40,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865659995] [2023-12-16 02:57:40,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:40,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861844478] [2023-12-16 02:57:40,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861844478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:40,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:40,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:57:40,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679074395] [2023-12-16 02:57:40,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:40,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:57:40,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:40,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:57:40,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:57:40,553 INFO L87 Difference]: Start difference. First operand 3575 states and 6131 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:41,123 INFO L93 Difference]: Finished difference Result 10107 states and 17353 transitions. [2023-12-16 02:57:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:57:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 769 [2023-12-16 02:57:41,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:41,156 INFO L225 Difference]: With dead ends: 10107 [2023-12-16 02:57:41,156 INFO L226 Difference]: Without dead ends: 6901 [2023-12-16 02:57:41,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:57:41,167 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 478 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:41,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1630 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:57:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2023-12-16 02:57:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 6895. [2023-12-16 02:57:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 5448 states have (on average 1.637481644640235) internal successors, (8921), 5476 states have internal predecessors, (8921), 1411 states have call successors, (1411), 35 states have call predecessors, (1411), 35 states have return successors, (1411), 1383 states have call predecessors, (1411), 1411 states have call successors, (1411) [2023-12-16 02:57:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 11743 transitions. [2023-12-16 02:57:41,657 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 11743 transitions. Word has length 769 [2023-12-16 02:57:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:41,658 INFO L495 AbstractCegarLoop]: Abstraction has 6895 states and 11743 transitions. [2023-12-16 02:57:41,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 11743 transitions. [2023-12-16 02:57:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:57:41,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:41,675 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:41,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:41,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:41,885 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:41,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1607281113, now seen corresponding path program 1 times [2023-12-16 02:57:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255625445] [2023-12-16 02:57:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:41,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:41,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514743512] [2023-12-16 02:57:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:41,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:41,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:41,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:41,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 02:57:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:42,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:57:42,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 11706 proven. 270 refuted. 0 times theorem prover too weak. 18036 trivial. 0 not checked. [2023-12-16 02:57:43,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 96 proven. 270 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-16 02:57:43,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:43,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255625445] [2023-12-16 02:57:43,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:43,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514743512] [2023-12-16 02:57:43,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514743512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:57:43,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:57:43,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 02:57:43,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237450921] [2023-12-16 02:57:43,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:57:43,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:57:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:57:43,631 INFO L87 Difference]: Start difference. First operand 6895 states and 11743 transitions. Second operand has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 3 states have call successors, (213), 2 states have call predecessors, (213), 4 states have return successors, (214), 3 states have call predecessors, (214), 3 states have call successors, (214) [2023-12-16 02:57:44,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:44,533 INFO L93 Difference]: Finished difference Result 13507 states and 22837 transitions. [2023-12-16 02:57:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:57:44,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 3 states have call successors, (213), 2 states have call predecessors, (213), 4 states have return successors, (214), 3 states have call predecessors, (214), 3 states have call successors, (214) Word has length 769 [2023-12-16 02:57:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:44,582 INFO L225 Difference]: With dead ends: 13507 [2023-12-16 02:57:44,582 INFO L226 Difference]: Without dead ends: 7065 [2023-12-16 02:57:44,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 1530 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 02:57:44,598 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 750 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:44,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 954 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:57:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7065 states. [2023-12-16 02:57:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7065 to 6963. [2023-12-16 02:57:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6963 states, 5499 states have (on average 1.6250227314057102) internal successors, (8936), 5527 states have internal predecessors, (8936), 1411 states have call successors, (1411), 52 states have call predecessors, (1411), 52 states have return successors, (1411), 1383 states have call predecessors, (1411), 1411 states have call successors, (1411) [2023-12-16 02:57:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6963 states to 6963 states and 11758 transitions. [2023-12-16 02:57:45,216 INFO L78 Accepts]: Start accepts. Automaton has 6963 states and 11758 transitions. Word has length 769 [2023-12-16 02:57:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:45,217 INFO L495 AbstractCegarLoop]: Abstraction has 6963 states and 11758 transitions. [2023-12-16 02:57:45,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 3 states have call successors, (213), 2 states have call predecessors, (213), 4 states have return successors, (214), 3 states have call predecessors, (214), 3 states have call successors, (214) [2023-12-16 02:57:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6963 states and 11758 transitions. [2023-12-16 02:57:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:57:45,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:45,234 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:45,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 02:57:45,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:45,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash -78898725, now seen corresponding path program 1 times [2023-12-16 02:57:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:45,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052343130] [2023-12-16 02:57:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:45,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:45,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228519884] [2023-12-16 02:57:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:45,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:45,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:45,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:45,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 02:57:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:45,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:57:45,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 12372 proven. 261 refuted. 0 times theorem prover too weak. 17379 trivial. 0 not checked. [2023-12-16 02:57:46,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 105 proven. 261 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-16 02:57:47,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:47,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052343130] [2023-12-16 02:57:47,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:47,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228519884] [2023-12-16 02:57:47,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228519884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:57:47,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:57:47,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:57:47,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429332009] [2023-12-16 02:57:47,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:47,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:57:47,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:47,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:57:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:57:47,053 INFO L87 Difference]: Start difference. First operand 6963 states and 11758 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (210), 2 states have call predecessors, (210), 4 states have return successors, (211), 2 states have call predecessors, (211), 2 states have call successors, (211) [2023-12-16 02:57:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:47,915 INFO L93 Difference]: Finished difference Result 10091 states and 16946 transitions. [2023-12-16 02:57:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:57:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (210), 2 states have call predecessors, (210), 4 states have return successors, (211), 2 states have call predecessors, (211), 2 states have call successors, (211) Word has length 769 [2023-12-16 02:57:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:47,928 INFO L225 Difference]: With dead ends: 10091 [2023-12-16 02:57:47,928 INFO L226 Difference]: Without dead ends: 3921 [2023-12-16 02:57:47,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 1530 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:57:47,945 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 281 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:47,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1163 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:57:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2023-12-16 02:57:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3867. [2023-12-16 02:57:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3867 states, 2882 states have (on average 1.5645385149201942) internal successors, (4509), 2894 states have internal predecessors, (4509), 947 states have call successors, (947), 37 states have call predecessors, (947), 37 states have return successors, (947), 935 states have call predecessors, (947), 947 states have call successors, (947) [2023-12-16 02:57:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3867 states to 3867 states and 6403 transitions. [2023-12-16 02:57:48,322 INFO L78 Accepts]: Start accepts. Automaton has 3867 states and 6403 transitions. Word has length 769 [2023-12-16 02:57:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:48,323 INFO L495 AbstractCegarLoop]: Abstraction has 3867 states and 6403 transitions. [2023-12-16 02:57:48,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (210), 2 states have call predecessors, (210), 4 states have return successors, (211), 2 states have call predecessors, (211), 2 states have call successors, (211) [2023-12-16 02:57:48,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3867 states and 6403 transitions. [2023-12-16 02:57:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:57:48,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:48,334 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:48,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:48,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:48,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:48,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash -51100641, now seen corresponding path program 1 times [2023-12-16 02:57:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:48,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464651175] [2023-12-16 02:57:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:48,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:48,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:48,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499884109] [2023-12-16 02:57:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:48,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:48,609 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:48,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 02:57:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:49,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:57:49,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 13868 proven. 129 refuted. 0 times theorem prover too weak. 16015 trivial. 0 not checked. [2023-12-16 02:57:49,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 237 proven. 129 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-16 02:57:49,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464651175] [2023-12-16 02:57:49,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499884109] [2023-12-16 02:57:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499884109] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:57:49,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:57:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 02:57:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861866910] [2023-12-16 02:57:49,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:49,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:57:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:49,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:57:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:57:49,786 INFO L87 Difference]: Start difference. First operand 3867 states and 6403 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) [2023-12-16 02:57:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:50,624 INFO L93 Difference]: Finished difference Result 7215 states and 11867 transitions. [2023-12-16 02:57:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 02:57:50,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) Word has length 769 [2023-12-16 02:57:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:50,639 INFO L225 Difference]: With dead ends: 7215 [2023-12-16 02:57:50,640 INFO L226 Difference]: Without dead ends: 3951 [2023-12-16 02:57:50,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1544 GetRequests, 1529 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-16 02:57:50,650 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 526 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:50,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 989 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:57:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-16 02:57:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3887. [2023-12-16 02:57:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 2897 states have (on average 1.5519502934069727) internal successors, (4496), 2909 states have internal predecessors, (4496), 947 states have call successors, (947), 42 states have call predecessors, (947), 42 states have return successors, (947), 935 states have call predecessors, (947), 947 states have call successors, (947) [2023-12-16 02:57:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 6390 transitions. [2023-12-16 02:57:51,118 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 6390 transitions. Word has length 769 [2023-12-16 02:57:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:51,119 INFO L495 AbstractCegarLoop]: Abstraction has 3887 states and 6390 transitions. [2023-12-16 02:57:51,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) [2023-12-16 02:57:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 6390 transitions. [2023-12-16 02:57:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:57:51,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:51,131 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:51,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:51,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 02:57:51,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:51,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:51,341 INFO L85 PathProgramCache]: Analyzing trace with hash 167754077, now seen corresponding path program 1 times [2023-12-16 02:57:51,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:51,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426341249] [2023-12-16 02:57:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:51,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:51,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148861179] [2023-12-16 02:57:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:51,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:51,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:51,425 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:51,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 02:57:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:51,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:57:51,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30012 trivial. 0 not checked. [2023-12-16 02:57:51,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:51,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:51,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426341249] [2023-12-16 02:57:51,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:51,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148861179] [2023-12-16 02:57:51,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148861179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:51,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:51,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:57:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506369166] [2023-12-16 02:57:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:51,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:57:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:51,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:57:51,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:57:51,914 INFO L87 Difference]: Start difference. First operand 3887 states and 6390 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:53,072 INFO L93 Difference]: Finished difference Result 10135 states and 16791 transitions. [2023-12-16 02:57:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 02:57:53,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) Word has length 769 [2023-12-16 02:57:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:53,137 INFO L225 Difference]: With dead ends: 10135 [2023-12-16 02:57:53,137 INFO L226 Difference]: Without dead ends: 7049 [2023-12-16 02:57:53,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:57:53,167 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 1218 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:53,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 3250 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 02:57:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7049 states. [2023-12-16 02:57:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7049 to 6011. [2023-12-16 02:57:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 4589 states have (on average 1.5676617999564175) internal successors, (7194), 4607 states have internal predecessors, (7194), 1359 states have call successors, (1359), 62 states have call predecessors, (1359), 62 states have return successors, (1359), 1341 states have call predecessors, (1359), 1359 states have call successors, (1359) [2023-12-16 02:57:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 9912 transitions. [2023-12-16 02:57:53,731 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 9912 transitions. Word has length 769 [2023-12-16 02:57:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:53,732 INFO L495 AbstractCegarLoop]: Abstraction has 6011 states and 9912 transitions. [2023-12-16 02:57:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 1 states have call predecessors, (123), 1 states have call successors, (123) [2023-12-16 02:57:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 9912 transitions. [2023-12-16 02:57:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:57:53,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:53,743 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:53,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:53,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 02:57:53,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:53,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:53,954 INFO L85 PathProgramCache]: Analyzing trace with hash 590455903, now seen corresponding path program 1 times [2023-12-16 02:57:53,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:53,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003270217] [2023-12-16 02:57:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:54,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:54,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279590398] [2023-12-16 02:57:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:54,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:54,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:54,016 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:54,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 02:57:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:54,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:57:54,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 14528 proven. 219 refuted. 0 times theorem prover too weak. 15265 trivial. 0 not checked. [2023-12-16 02:57:55,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:56,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:56,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003270217] [2023-12-16 02:57:56,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:56,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279590398] [2023-12-16 02:57:56,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279590398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:57:56,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:57:56,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-16 02:57:56,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997600552] [2023-12-16 02:57:56,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:56,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:57:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:57:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:57:56,939 INFO L87 Difference]: Start difference. First operand 6011 states and 9912 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-16 02:57:58,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:58,119 INFO L93 Difference]: Finished difference Result 17677 states and 29097 transitions. [2023-12-16 02:57:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:57:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 769 [2023-12-16 02:57:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:58,155 INFO L225 Difference]: With dead ends: 17677 [2023-12-16 02:57:58,156 INFO L226 Difference]: Without dead ends: 11915 [2023-12-16 02:57:58,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1254 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-16 02:57:58,171 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 296 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:58,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 2043 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:57:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2023-12-16 02:57:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 11801. [2023-12-16 02:57:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11801 states, 9080 states have (on average 1.5670704845814978) internal successors, (14229), 9116 states have internal predecessors, (14229), 2595 states have call successors, (2595), 125 states have call predecessors, (2595), 125 states have return successors, (2595), 2559 states have call predecessors, (2595), 2595 states have call successors, (2595) [2023-12-16 02:57:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11801 states to 11801 states and 19419 transitions. [2023-12-16 02:57:59,448 INFO L78 Accepts]: Start accepts. Automaton has 11801 states and 19419 transitions. Word has length 769 [2023-12-16 02:57:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:59,449 INFO L495 AbstractCegarLoop]: Abstraction has 11801 states and 19419 transitions. [2023-12-16 02:57:59,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-16 02:57:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 11801 states and 19419 transitions. [2023-12-16 02:57:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:57:59,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:59,463 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:59,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:59,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 02:57:59,673 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:59,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:59,674 INFO L85 PathProgramCache]: Analyzing trace with hash 617521505, now seen corresponding path program 1 times [2023-12-16 02:57:59,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:59,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732781041] [2023-12-16 02:57:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:59,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:59,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828154996] [2023-12-16 02:57:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:59,739 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:57:59,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 02:58:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:00,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 02:58:00,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 6851 proven. 666 refuted. 0 times theorem prover too weak. 22495 trivial. 0 not checked. [2023-12-16 02:58:01,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 60 proven. 669 refuted. 0 times theorem prover too weak. 29283 trivial. 0 not checked. [2023-12-16 02:58:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732781041] [2023-12-16 02:58:02,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828154996] [2023-12-16 02:58:02,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828154996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:02,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-16 02:58:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130909977] [2023-12-16 02:58:02,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:02,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 02:58:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 02:58:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-16 02:58:02,769 INFO L87 Difference]: Start difference. First operand 11801 states and 19419 transitions. Second operand has 16 states, 16 states have (on average 19.875) internal successors, (318), 16 states have internal predecessors, (318), 5 states have call successors, (240), 3 states have call predecessors, (240), 7 states have return successors, (241), 5 states have call predecessors, (241), 5 states have call successors, (241) [2023-12-16 02:58:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:04,250 INFO L93 Difference]: Finished difference Result 22999 states and 37160 transitions. [2023-12-16 02:58:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 02:58:04,251 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.875) internal successors, (318), 16 states have internal predecessors, (318), 5 states have call successors, (240), 3 states have call predecessors, (240), 7 states have return successors, (241), 5 states have call predecessors, (241), 5 states have call successors, (241) Word has length 769 [2023-12-16 02:58:04,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:04,288 INFO L225 Difference]: With dead ends: 22999 [2023-12-16 02:58:04,288 INFO L226 Difference]: Without dead ends: 12573 [2023-12-16 02:58:04,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1544 GetRequests, 1522 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 02:58:04,311 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 952 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:04,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 2073 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:58:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12573 states. [2023-12-16 02:58:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12573 to 12193. [2023-12-16 02:58:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12193 states, 9374 states have (on average 1.5441647109024963) internal successors, (14475), 9410 states have internal predecessors, (14475), 2595 states have call successors, (2595), 223 states have call predecessors, (2595), 223 states have return successors, (2595), 2559 states have call predecessors, (2595), 2595 states have call successors, (2595) [2023-12-16 02:58:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12193 states to 12193 states and 19665 transitions. [2023-12-16 02:58:05,457 INFO L78 Accepts]: Start accepts. Automaton has 12193 states and 19665 transitions. Word has length 769 [2023-12-16 02:58:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:05,460 INFO L495 AbstractCegarLoop]: Abstraction has 12193 states and 19665 transitions. [2023-12-16 02:58:05,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.875) internal successors, (318), 16 states have internal predecessors, (318), 5 states have call successors, (240), 3 states have call predecessors, (240), 7 states have return successors, (241), 5 states have call predecessors, (241), 5 states have call successors, (241) [2023-12-16 02:58:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 12193 states and 19665 transitions. [2023-12-16 02:58:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:58:05,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:05,474 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:05,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:05,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 02:58:05,682 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:05,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash -191825121, now seen corresponding path program 1 times [2023-12-16 02:58:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301693810] [2023-12-16 02:58:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:05,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:05,734 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:05,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965853602] [2023-12-16 02:58:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:05,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:05,736 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:05,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 02:58:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:06,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 02:58:06,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 2018 proven. 354 refuted. 0 times theorem prover too weak. 27640 trivial. 0 not checked. [2023-12-16 02:58:08,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 12 proven. 354 refuted. 0 times theorem prover too weak. 29646 trivial. 0 not checked. [2023-12-16 02:58:08,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:08,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301693810] [2023-12-16 02:58:08,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:08,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965853602] [2023-12-16 02:58:08,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965853602] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:08,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:08,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-16 02:58:08,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054336676] [2023-12-16 02:58:08,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:08,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 02:58:08,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 02:58:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-16 02:58:08,772 INFO L87 Difference]: Start difference. First operand 12193 states and 19665 transitions. Second operand has 14 states, 14 states have (on average 22.428571428571427) internal successors, (314), 14 states have internal predecessors, (314), 4 states have call successors, (246), 3 states have call predecessors, (246), 5 states have return successors, (246), 4 states have call predecessors, (246), 4 states have call successors, (246) [2023-12-16 02:58:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:12,839 INFO L93 Difference]: Finished difference Result 38791 states and 61697 transitions. [2023-12-16 02:58:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 02:58:12,840 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.428571428571427) internal successors, (314), 14 states have internal predecessors, (314), 4 states have call successors, (246), 3 states have call predecessors, (246), 5 states have return successors, (246), 4 states have call predecessors, (246), 4 states have call successors, (246) Word has length 769 [2023-12-16 02:58:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:12,930 INFO L225 Difference]: With dead ends: 38791 [2023-12-16 02:58:12,930 INFO L226 Difference]: Without dead ends: 27981 [2023-12-16 02:58:12,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1528 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2023-12-16 02:58:12,956 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1969 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:12,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 3050 Invalid, 3852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 02:58:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27981 states. [2023-12-16 02:58:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27981 to 23389. [2023-12-16 02:58:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23389 states, 17787 states have (on average 1.522460223758925) internal successors, (27080), 17859 states have internal predecessors, (27080), 5067 states have call successors, (5067), 534 states have call predecessors, (5067), 534 states have return successors, (5067), 4995 states have call predecessors, (5067), 5067 states have call successors, (5067) [2023-12-16 02:58:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23389 states to 23389 states and 37214 transitions. [2023-12-16 02:58:15,682 INFO L78 Accepts]: Start accepts. Automaton has 23389 states and 37214 transitions. Word has length 769 [2023-12-16 02:58:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:15,683 INFO L495 AbstractCegarLoop]: Abstraction has 23389 states and 37214 transitions. [2023-12-16 02:58:15,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.428571428571427) internal successors, (314), 14 states have internal predecessors, (314), 4 states have call successors, (246), 3 states have call predecessors, (246), 5 states have return successors, (246), 4 states have call predecessors, (246), 4 states have call successors, (246) [2023-12-16 02:58:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 23389 states and 37214 transitions. [2023-12-16 02:58:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-16 02:58:15,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:15,696 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:15,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:15,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:15,906 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:15,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash -584852131, now seen corresponding path program 1 times [2023-12-16 02:58:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:15,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802530902] [2023-12-16 02:58:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:15,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:15,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87184817] [2023-12-16 02:58:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:15,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:15,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:15,961 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:15,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 02:58:16,399 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:58:16,435 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:58:17,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:17,636 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-12-16 02:58:17,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 02:58:17,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-12-16 02:58:17,642 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:58:17,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:58:17,642 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 770 with TraceHistMax 123,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-16 02:58:17,647 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:17,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:58:17,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:58:17 BoogieIcfgContainer [2023-12-16 02:58:17,651 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:58:17,652 INFO L158 Benchmark]: Toolchain (without parser) took 50455.02ms. Allocated memory was 183.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 134.9MB in the beginning and 867.0MB in the end (delta: -732.0MB). Peak memory consumption was 651.4MB. Max. memory is 8.0GB. [2023-12-16 02:58:17,652 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 183.5MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:58:17,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.91ms. Allocated memory is still 183.5MB. Free memory was 134.6MB in the beginning and 103.0MB in the end (delta: 31.6MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 02:58:17,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.77ms. Allocated memory is still 183.5MB. Free memory was 103.0MB in the beginning and 148.8MB in the end (delta: -45.8MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 02:58:17,653 INFO L158 Benchmark]: Boogie Preprocessor took 145.74ms. Allocated memory is still 183.5MB. Free memory was 148.8MB in the beginning and 135.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 02:58:17,653 INFO L158 Benchmark]: RCFGBuilder took 1176.07ms. Allocated memory is still 183.5MB. Free memory was 135.2MB in the beginning and 51.3MB in the end (delta: 83.9MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. [2023-12-16 02:58:17,653 INFO L158 Benchmark]: TraceAbstraction took 48429.03ms. Allocated memory was 248.5MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 212.8MB in the beginning and 867.0MB in the end (delta: -654.2MB). Peak memory consumption was 663.4MB. Max. memory is 8.0GB. [2023-12-16 02:58:17,654 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 183.5MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 529.91ms. Allocated memory is still 183.5MB. Free memory was 134.6MB in the beginning and 103.0MB in the end (delta: 31.6MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 141.77ms. Allocated memory is still 183.5MB. Free memory was 103.0MB in the beginning and 148.8MB in the end (delta: -45.8MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 145.74ms. Allocated memory is still 183.5MB. Free memory was 148.8MB in the beginning and 135.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1176.07ms. Allocated memory is still 183.5MB. Free memory was 135.2MB in the beginning and 51.3MB in the end (delta: 83.9MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. * TraceAbstraction took 48429.03ms. Allocated memory was 248.5MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 212.8MB in the beginning and 867.0MB in the end (delta: -654.2MB). Peak memory consumption was 663.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 770 with TraceHistMax 123,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 329 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.4s, OverallIterations: 15, TraceHistogramMax: 123, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8200 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7957 mSDsluCounter, 21608 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13729 mSDsCounter, 2782 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7663 IncrementalHoareTripleChecker+Invalid, 10445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2782 mSolverCounterUnsat, 7879 mSDtfsCounter, 7663 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15134 GetRequests, 15023 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23389occurred in iteration=14, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 6361 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 11528 NumberOfCodeBlocks, 11528 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 14586 ConstructedInterpolants, 0 QuantifiedInterpolants, 52541 SizeOfPredicates, 28 NumberOfNonLiveVariables, 23932 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 566646/570228 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown