/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-82.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:02:15,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:02:15,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:02:15,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:02:15,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:02:15,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:02:15,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:02:15,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:02:15,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:02:15,967 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:02:15,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:02:15,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:02:15,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:02:15,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:02:15,968 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:02:15,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:02:15,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:02:15,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:02:15,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:02:15,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:02:15,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:02:15,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:02:15,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:02:15,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:02:15,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:02:15,970 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:02:15,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:02:15,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:02:15,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:02:15,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:02:15,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:02:15,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:02:15,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:02:15,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:02:15,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:02:15,973 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:02:15,974 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:02:16,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:02:16,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:02:16,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:02:16,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:02:16,194 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:02:16,195 INFO L431 ainManager$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-82.i [2023-12-15 20:02:17,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:02:17,413 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:02:17,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-82.i [2023-12-15 20:02:17,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede063478/bf43e400741147c4a17c13f8330714b9/FLAGf0547a9f9 [2023-12-15 20:02:17,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede063478/bf43e400741147c4a17c13f8330714b9 [2023-12-15 20:02:17,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:02:17,456 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:02:17,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:02:17,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:02:17,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:02:17,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:17,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d0afd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17, skipping insertion in model container [2023-12-15 20:02:17,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:17,505 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:02:17,616 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-82.i[916,929] [2023-12-15 20:02:17,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:02:17,779 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:02:17,787 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-82.i[916,929] [2023-12-15 20:02:17,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:02:17,863 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:02:17,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17 WrapperNode [2023-12-15 20:02:17,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:02:17,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:02:17,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:02:17,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:02:17,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:17,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:17,963 INFO L138 Inliner]: procedures = 26, calls = 106, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 852 [2023-12-15 20:02:17,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:02:17,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:02:17,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:02:17,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:02:17,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:17,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:17,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,025 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]. [2023-12-15 20:02:18,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:02:18,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:02:18,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:02:18,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:02:18,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (1/1) ... [2023-12-15 20:02:18,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:02:18,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:18,108 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) [2023-12-15 20:02:18,114 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 [2023-12-15 20:02:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:02:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:02:18,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:02:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:02:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:02:18,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:02:18,244 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:02:18,245 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:02:19,021 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:02:19,074 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:02:19,075 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:02:19,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:02:19 BoogieIcfgContainer [2023-12-15 20:02:19,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:02:19,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:02:19,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:02:19,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:02:19,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:02:17" (1/3) ... [2023-12-15 20:02:19,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c9e2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:02:19, skipping insertion in model container [2023-12-15 20:02:19,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:17" (2/3) ... [2023-12-15 20:02:19,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c9e2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:02:19, skipping insertion in model container [2023-12-15 20:02:19,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:02:19" (3/3) ... [2023-12-15 20:02:19,083 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-82.i [2023-12-15 20:02:19,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:02:19,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:02:19,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:02:19,150 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;@6d8f821a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:02:19,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:02:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 227 states have (on average 1.7004405286343611) internal successors, (386), 228 states have internal predecessors, (386), 93 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-15 20:02:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-12-15 20:02:19,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:19,180 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:19,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:19,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1670503945, now seen corresponding path program 1 times [2023-12-15 20:02:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156343104] [2023-12-15 20:02:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:19,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156343104] [2023-12-15 20:02:19,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:02:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43458627] [2023-12-15 20:02:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:19,473 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) [2023-12-15 20:02:19,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:02:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:19,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:02:19,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 16928 trivial. 0 not checked. [2023-12-15 20:02:19,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43458627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:19,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:19,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:02:19,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785452179] [2023-12-15 20:02:19,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:19,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:02:19,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:02:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:02:19,913 INFO L87 Difference]: Start difference. First operand has 323 states, 227 states have (on average 1.7004405286343611) internal successors, (386), 228 states have internal predecessors, (386), 93 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-15 20:02:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:19,987 INFO L93 Difference]: Finished difference Result 640 states and 1229 transitions. [2023-12-15 20:02:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:02:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 2 states have call successors, (93) Word has length 601 [2023-12-15 20:02:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:19,997 INFO L225 Difference]: With dead ends: 640 [2023-12-15 20:02:19,997 INFO L226 Difference]: Without dead ends: 318 [2023-12-15 20:02:20,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:02:20,009 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 [2023-12-15 20:02:20,011 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] [2023-12-15 20:02:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-15 20:02:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-12-15 20:02:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 223 states have (on average 1.6726457399103138) internal successors, (373), 223 states have internal predecessors, (373), 93 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-15 20:02:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 559 transitions. [2023-12-15 20:02:20,093 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 559 transitions. Word has length 601 [2023-12-15 20:02:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:20,093 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 559 transitions. [2023-12-15 20:02:20,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-15 20:02:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 559 transitions. [2023-12-15 20:02:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 20:02:20,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:20,107 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:20,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:02:20,322 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 [2023-12-15 20:02:20,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:20,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash -809553791, now seen corresponding path program 1 times [2023-12-15 20:02:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:20,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155244371] [2023-12-15 20:02:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:20,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:20,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:20,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084247094] [2023-12-15 20:02:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:20,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:20,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:20,479 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) [2023-12-15 20:02:20,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:02:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:20,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:20,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:20,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:20,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:20,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155244371] [2023-12-15 20:02:20,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084247094] [2023-12-15 20:02:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084247094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:20,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:20,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345299934] [2023-12-15 20:02:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:20,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:20,944 INFO L87 Difference]: Start difference. First operand 318 states and 559 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:21,022 INFO L93 Difference]: Finished difference Result 841 states and 1489 transitions. [2023-12-15 20:02:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:21,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 602 [2023-12-15 20:02:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:21,031 INFO L225 Difference]: With dead ends: 841 [2023-12-15 20:02:21,031 INFO L226 Difference]: Without dead ends: 524 [2023-12-15 20:02:21,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:21,034 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 308 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:21,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1087 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-12-15 20:02:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 521. [2023-12-15 20:02:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 394 states have (on average 1.715736040609137) internal successors, (676), 395 states have internal predecessors, (676), 124 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (124), 123 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-15 20:02:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 924 transitions. [2023-12-15 20:02:21,078 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 924 transitions. Word has length 602 [2023-12-15 20:02:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:21,080 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 924 transitions. [2023-12-15 20:02:21,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 924 transitions. [2023-12-15 20:02:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 20:02:21,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:21,088 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:21,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:21,294 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 [2023-12-15 20:02:21,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:21,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1796469763, now seen corresponding path program 1 times [2023-12-15 20:02:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:21,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127214945] [2023-12-15 20:02:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:21,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:21,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301840219] [2023-12-15 20:02:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:21,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:21,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:21,382 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) [2023-12-15 20:02:21,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:02:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:21,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:21,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:21,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:21,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:21,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127214945] [2023-12-15 20:02:21,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:21,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301840219] [2023-12-15 20:02:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301840219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:21,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:21,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986049976] [2023-12-15 20:02:21,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:21,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:21,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:21,761 INFO L87 Difference]: Start difference. First operand 521 states and 924 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:21,802 INFO L93 Difference]: Finished difference Result 1402 states and 2474 transitions. [2023-12-15 20:02:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:21,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 602 [2023-12-15 20:02:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:21,808 INFO L225 Difference]: With dead ends: 1402 [2023-12-15 20:02:21,808 INFO L226 Difference]: Without dead ends: 882 [2023-12-15 20:02:21,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:21,810 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 327 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:21,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1288 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-12-15 20:02:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 879. [2023-12-15 20:02:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 648 states have (on average 1.6867283950617284) internal successors, (1093), 651 states have internal predecessors, (1093), 226 states have call successors, (226), 4 states have call predecessors, (226), 4 states have return successors, (226), 223 states have call predecessors, (226), 226 states have call successors, (226) [2023-12-15 20:02:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1545 transitions. [2023-12-15 20:02:21,852 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1545 transitions. Word has length 602 [2023-12-15 20:02:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:21,853 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1545 transitions. [2023-12-15 20:02:21,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:21,854 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1545 transitions. [2023-12-15 20:02:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 20:02:21,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:21,858 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:21,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:22,063 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 [2023-12-15 20:02:22,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:22,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1477538621, now seen corresponding path program 1 times [2023-12-15 20:02:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63167528] [2023-12-15 20:02:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:22,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403120987] [2023-12-15 20:02:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:22,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:22,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:22,140 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) [2023-12-15 20:02:22,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:02:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:22,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:22,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:22,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:22,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63167528] [2023-12-15 20:02:22,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403120987] [2023-12-15 20:02:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403120987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:22,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:22,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148233992] [2023-12-15 20:02:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:22,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:22,498 INFO L87 Difference]: Start difference. First operand 879 states and 1545 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:22,571 INFO L93 Difference]: Finished difference Result 2631 states and 4625 transitions. [2023-12-15 20:02:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 602 [2023-12-15 20:02:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:22,580 INFO L225 Difference]: With dead ends: 2631 [2023-12-15 20:02:22,580 INFO L226 Difference]: Without dead ends: 1753 [2023-12-15 20:02:22,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:22,585 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 540 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:22,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1093 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-12-15 20:02:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1751. [2023-12-15 20:02:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1290 states have (on average 1.669767441860465) internal successors, (2154), 1296 states have internal predecessors, (2154), 452 states have call successors, (452), 8 states have call predecessors, (452), 8 states have return successors, (452), 446 states have call predecessors, (452), 452 states have call successors, (452) [2023-12-15 20:02:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 3058 transitions. [2023-12-15 20:02:22,719 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 3058 transitions. Word has length 602 [2023-12-15 20:02:22,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:22,720 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 3058 transitions. [2023-12-15 20:02:22,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 3058 transitions. [2023-12-15 20:02:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 20:02:22,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:22,725 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:22,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:22,933 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 [2023-12-15 20:02:22,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:22,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:22,934 INFO L85 PathProgramCache]: Analyzing trace with hash -366914369, now seen corresponding path program 1 times [2023-12-15 20:02:22,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:22,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720896349] [2023-12-15 20:02:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:22,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:22,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879343513] [2023-12-15 20:02:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:22,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:22,975 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) [2023-12-15 20:02:23,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:02:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:23,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:23,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:23,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:23,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:23,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720896349] [2023-12-15 20:02:23,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:23,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879343513] [2023-12-15 20:02:23,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879343513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:23,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:23,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981716148] [2023-12-15 20:02:23,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:23,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:23,317 INFO L87 Difference]: Start difference. First operand 1751 states and 3058 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:23,441 INFO L93 Difference]: Finished difference Result 5163 states and 9004 transitions. [2023-12-15 20:02:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:23,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 602 [2023-12-15 20:02:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:23,454 INFO L225 Difference]: With dead ends: 5163 [2023-12-15 20:02:23,455 INFO L226 Difference]: Without dead ends: 3413 [2023-12-15 20:02:23,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:23,459 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 517 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:23,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1520 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2023-12-15 20:02:23,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 2059. [2023-12-15 20:02:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1598 states have (on average 1.7158948685857323) internal successors, (2742), 1604 states have internal predecessors, (2742), 452 states have call successors, (452), 8 states have call predecessors, (452), 8 states have return successors, (452), 446 states have call predecessors, (452), 452 states have call successors, (452) [2023-12-15 20:02:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 3646 transitions. [2023-12-15 20:02:23,628 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 3646 transitions. Word has length 602 [2023-12-15 20:02:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:23,629 INFO L495 AbstractCegarLoop]: Abstraction has 2059 states and 3646 transitions. [2023-12-15 20:02:23,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 3646 transitions. [2023-12-15 20:02:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2023-12-15 20:02:23,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:23,634 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:23,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:23,845 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 [2023-12-15 20:02:23,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:23,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash 55787457, now seen corresponding path program 1 times [2023-12-15 20:02:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793504013] [2023-12-15 20:02:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:23,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:23,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114038776] [2023-12-15 20:02:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:23,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:23,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:23,900 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) [2023-12-15 20:02:23,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:02:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:24,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:24,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:24,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:24,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:24,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793504013] [2023-12-15 20:02:24,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:24,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114038776] [2023-12-15 20:02:24,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114038776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:24,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:24,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:24,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387384783] [2023-12-15 20:02:24,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:24,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:24,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:24,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:24,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:24,262 INFO L87 Difference]: Start difference. First operand 2059 states and 3646 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:24,392 INFO L93 Difference]: Finished difference Result 6095 states and 10784 transitions. [2023-12-15 20:02:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:24,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 602 [2023-12-15 20:02:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:24,409 INFO L225 Difference]: With dead ends: 6095 [2023-12-15 20:02:24,409 INFO L226 Difference]: Without dead ends: 4037 [2023-12-15 20:02:24,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:24,416 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 549 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:24,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1104 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2023-12-15 20:02:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 4027. [2023-12-15 20:02:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 3106 states have (on average 1.6902768834513844) internal successors, (5250), 3118 states have internal predecessors, (5250), 904 states have call successors, (904), 16 states have call predecessors, (904), 16 states have return successors, (904), 892 states have call predecessors, (904), 904 states have call successors, (904) [2023-12-15 20:02:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 7058 transitions. [2023-12-15 20:02:24,662 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 7058 transitions. Word has length 602 [2023-12-15 20:02:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:24,662 INFO L495 AbstractCegarLoop]: Abstraction has 4027 states and 7058 transitions. [2023-12-15 20:02:24,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 7058 transitions. [2023-12-15 20:02:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-15 20:02:24,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:24,669 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:24,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:24,875 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 [2023-12-15 20:02:24,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:24,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1438750133, now seen corresponding path program 1 times [2023-12-15 20:02:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:24,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110529378] [2023-12-15 20:02:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:24,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:24,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:24,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89090507] [2023-12-15 20:02:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:24,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:24,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:24,936 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) [2023-12-15 20:02:24,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:02:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:25,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:25,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:25,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110529378] [2023-12-15 20:02:25,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89090507] [2023-12-15 20:02:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89090507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:25,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:25,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:25,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605214478] [2023-12-15 20:02:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:25,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:25,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:25,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:25,288 INFO L87 Difference]: Start difference. First operand 4027 states and 7058 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:25,442 INFO L93 Difference]: Finished difference Result 8543 states and 15048 transitions. [2023-12-15 20:02:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:25,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 603 [2023-12-15 20:02:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:25,458 INFO L225 Difference]: With dead ends: 8543 [2023-12-15 20:02:25,458 INFO L226 Difference]: Without dead ends: 4517 [2023-12-15 20:02:25,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:25,467 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 534 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:25,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1567 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2023-12-15 20:02:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4507. [2023-12-15 20:02:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4507 states, 3586 states have (on average 1.6971556051310652) internal successors, (6086), 3598 states have internal predecessors, (6086), 904 states have call successors, (904), 16 states have call predecessors, (904), 16 states have return successors, (904), 892 states have call predecessors, (904), 904 states have call successors, (904) [2023-12-15 20:02:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 7894 transitions. [2023-12-15 20:02:25,704 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 7894 transitions. Word has length 603 [2023-12-15 20:02:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:25,723 INFO L495 AbstractCegarLoop]: Abstraction has 4507 states and 7894 transitions. [2023-12-15 20:02:25,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 7894 transitions. [2023-12-15 20:02:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-15 20:02:25,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:25,731 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:25,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:25,941 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 [2023-12-15 20:02:25,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:25,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1304736627, now seen corresponding path program 1 times [2023-12-15 20:02:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119411696] [2023-12-15 20:02:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:25,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:25,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848567003] [2023-12-15 20:02:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:25,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:25,981 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) [2023-12-15 20:02:25,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:02:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:26,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:26,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:26,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:26,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:26,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119411696] [2023-12-15 20:02:26,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:26,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848567003] [2023-12-15 20:02:26,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848567003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:26,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:26,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768384118] [2023-12-15 20:02:26,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:26,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:26,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:26,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:26,320 INFO L87 Difference]: Start difference. First operand 4507 states and 7894 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:26,558 INFO L93 Difference]: Finished difference Result 11415 states and 19708 transitions. [2023-12-15 20:02:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 603 [2023-12-15 20:02:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:26,598 INFO L225 Difference]: With dead ends: 11415 [2023-12-15 20:02:26,599 INFO L226 Difference]: Without dead ends: 6909 [2023-12-15 20:02:26,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:26,610 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 265 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:26,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1119 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:26,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6909 states. [2023-12-15 20:02:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6909 to 6903. [2023-12-15 20:02:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 5142 states have (on average 1.615324776351614) internal successors, (8306), 5170 states have internal predecessors, (8306), 1728 states have call successors, (1728), 32 states have call predecessors, (1728), 32 states have return successors, (1728), 1700 states have call predecessors, (1728), 1728 states have call successors, (1728) [2023-12-15 20:02:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 11762 transitions. [2023-12-15 20:02:27,004 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 11762 transitions. Word has length 603 [2023-12-15 20:02:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:27,005 INFO L495 AbstractCegarLoop]: Abstraction has 6903 states and 11762 transitions. [2023-12-15 20:02:27,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 11762 transitions. [2023-12-15 20:02:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-15 20:02:27,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:27,014 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:27,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:27,221 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 [2023-12-15 20:02:27,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:27,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:27,222 INFO L85 PathProgramCache]: Analyzing trace with hash 283668273, now seen corresponding path program 1 times [2023-12-15 20:02:27,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:27,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038285478] [2023-12-15 20:02:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:27,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:27,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:27,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12133544] [2023-12-15 20:02:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:27,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:27,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:27,304 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) [2023-12-15 20:02:27,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:02:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:27,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:27,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:27,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:27,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038285478] [2023-12-15 20:02:27,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:27,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12133544] [2023-12-15 20:02:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12133544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:27,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:27,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:27,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804115406] [2023-12-15 20:02:27,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:27,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:27,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:27,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:27,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:27,659 INFO L87 Difference]: Start difference. First operand 6903 states and 11762 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:28,060 INFO L93 Difference]: Finished difference Result 20659 states and 35204 transitions. [2023-12-15 20:02:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 603 [2023-12-15 20:02:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:28,092 INFO L225 Difference]: With dead ends: 20659 [2023-12-15 20:02:28,092 INFO L226 Difference]: Without dead ends: 13757 [2023-12-15 20:02:28,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:28,106 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 552 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:28,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1105 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:28,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13757 states. [2023-12-15 20:02:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13757 to 13755. [2023-12-15 20:02:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13755 states, 10234 states have (on average 1.610513973031073) internal successors, (16482), 10290 states have internal predecessors, (16482), 3456 states have call successors, (3456), 64 states have call predecessors, (3456), 64 states have return successors, (3456), 3400 states have call predecessors, (3456), 3456 states have call successors, (3456) [2023-12-15 20:02:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 23394 transitions. [2023-12-15 20:02:28,802 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 23394 transitions. Word has length 603 [2023-12-15 20:02:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:28,802 INFO L495 AbstractCegarLoop]: Abstraction has 13755 states and 23394 transitions. [2023-12-15 20:02:28,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 23394 transitions. [2023-12-15 20:02:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-15 20:02:28,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:28,812 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:28,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 20:02:29,019 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 [2023-12-15 20:02:29,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:29,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1294785523, now seen corresponding path program 1 times [2023-12-15 20:02:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:29,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994185093] [2023-12-15 20:02:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:29,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669210135] [2023-12-15 20:02:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:29,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:29,126 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) [2023-12-15 20:02:29,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:02:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:29,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:02:29,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:30,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:30,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:30,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994185093] [2023-12-15 20:02:30,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:30,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669210135] [2023-12-15 20:02:30,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669210135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:30,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:30,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:02:30,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774929878] [2023-12-15 20:02:30,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:30,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:02:30,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:02:30,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:02:30,202 INFO L87 Difference]: Start difference. First operand 13755 states and 23394 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:32,209 INFO L93 Difference]: Finished difference Result 49081 states and 82970 transitions. [2023-12-15 20:02:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 20:02:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 603 [2023-12-15 20:02:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:32,304 INFO L225 Difference]: With dead ends: 49081 [2023-12-15 20:02:32,304 INFO L226 Difference]: Without dead ends: 35327 [2023-12-15 20:02:32,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:02:32,337 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 1443 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:32,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 3294 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 20:02:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35327 states. [2023-12-15 20:02:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35327 to 32089. [2023-12-15 20:02:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32089 states, 24168 states have (on average 1.6026977821913273) internal successors, (38734), 24318 states have internal predecessors, (38734), 7760 states have call successors, (7760), 160 states have call predecessors, (7760), 160 states have return successors, (7760), 7610 states have call predecessors, (7760), 7760 states have call successors, (7760) [2023-12-15 20:02:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32089 states to 32089 states and 54254 transitions. [2023-12-15 20:02:34,130 INFO L78 Accepts]: Start accepts. Automaton has 32089 states and 54254 transitions. Word has length 603 [2023-12-15 20:02:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:34,131 INFO L495 AbstractCegarLoop]: Abstraction has 32089 states and 54254 transitions. [2023-12-15 20:02:34,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 32089 states and 54254 transitions. [2023-12-15 20:02:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-15 20:02:34,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:34,143 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:34,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:34,350 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 [2023-12-15 20:02:34,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:34,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:34,352 INFO L85 PathProgramCache]: Analyzing trace with hash 707979509, now seen corresponding path program 1 times [2023-12-15 20:02:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324183724] [2023-12-15 20:02:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:34,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660343331] [2023-12-15 20:02:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:34,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:34,393 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) [2023-12-15 20:02:34,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:02:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:34,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:02:34,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 8342 proven. 111 refuted. 0 times theorem prover too weak. 8659 trivial. 0 not checked. [2023-12-15 20:02:35,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 165 proven. 111 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-15 20:02:35,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:35,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324183724] [2023-12-15 20:02:35,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:35,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660343331] [2023-12-15 20:02:35,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660343331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:35,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:35,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 20:02:35,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780825730] [2023-12-15 20:02:35,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:35,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:02:35,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:35,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:02:35,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:02:35,304 INFO L87 Difference]: Start difference. First operand 32089 states and 54254 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-15 20:02:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:36,562 INFO L93 Difference]: Finished difference Result 51881 states and 87752 transitions. [2023-12-15 20:02:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:02:36,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 603 [2023-12-15 20:02:36,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:36,611 INFO L225 Difference]: With dead ends: 51881 [2023-12-15 20:02:36,611 INFO L226 Difference]: Without dead ends: 18897 [2023-12-15 20:02:36,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 1198 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:02:36,658 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 335 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:36,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1447 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:02:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18897 states. [2023-12-15 20:02:37,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18897 to 18180. [2023-12-15 20:02:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18180 states, 13774 states have (on average 1.6065050094380717) internal successors, (22128), 13846 states have internal predecessors, (22128), 4287 states have call successors, (4287), 118 states have call predecessors, (4287), 118 states have return successors, (4287), 4215 states have call predecessors, (4287), 4287 states have call successors, (4287) [2023-12-15 20:02:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18180 states to 18180 states and 30702 transitions. [2023-12-15 20:02:37,854 INFO L78 Accepts]: Start accepts. Automaton has 18180 states and 30702 transitions. Word has length 603 [2023-12-15 20:02:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:37,855 INFO L495 AbstractCegarLoop]: Abstraction has 18180 states and 30702 transitions. [2023-12-15 20:02:37,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-15 20:02:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18180 states and 30702 transitions. [2023-12-15 20:02:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2023-12-15 20:02:37,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:37,865 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:37,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:38,072 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 [2023-12-15 20:02:38,073 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:38,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash -52059481, now seen corresponding path program 1 times [2023-12-15 20:02:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206100660] [2023-12-15 20:02:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:38,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:38,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300335664] [2023-12-15 20:02:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:38,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:38,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:38,116 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) [2023-12-15 20:02:38,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:02:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:38,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:02:38,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 7458 proven. 189 refuted. 0 times theorem prover too weak. 9465 trivial. 0 not checked. [2023-12-15 20:02:38,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 87 proven. 189 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-15 20:02:39,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206100660] [2023-12-15 20:02:39,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300335664] [2023-12-15 20:02:39,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300335664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:39,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:39,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 20:02:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137463676] [2023-12-15 20:02:39,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:39,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:02:39,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:02:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:02:39,192 INFO L87 Difference]: Start difference. First operand 18180 states and 30702 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 3 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 3 states have call predecessors, (157), 3 states have call successors, (157) [2023-12-15 20:02:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:40,254 INFO L93 Difference]: Finished difference Result 36624 states and 61416 transitions. [2023-12-15 20:02:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:02:40,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 3 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 3 states have call predecessors, (157), 3 states have call successors, (157) Word has length 604 [2023-12-15 20:02:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:40,298 INFO L225 Difference]: With dead ends: 36624 [2023-12-15 20:02:40,298 INFO L226 Difference]: Without dead ends: 18541 [2023-12-15 20:02:40,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1210 GetRequests, 1200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:02:40,329 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 338 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:40,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1077 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:02:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18541 states. [2023-12-15 20:02:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18541 to 18377. [2023-12-15 20:02:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18377 states, 13890 states have (on average 1.584809215262779) internal successors, (22013), 13962 states have internal predecessors, (22013), 4287 states have call successors, (4287), 199 states have call predecessors, (4287), 199 states have return successors, (4287), 4215 states have call predecessors, (4287), 4287 states have call successors, (4287) [2023-12-15 20:02:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18377 states to 18377 states and 30587 transitions. [2023-12-15 20:02:41,312 INFO L78 Accepts]: Start accepts. Automaton has 18377 states and 30587 transitions. Word has length 604 [2023-12-15 20:02:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:41,312 INFO L495 AbstractCegarLoop]: Abstraction has 18377 states and 30587 transitions. [2023-12-15 20:02:41,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 3 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 3 states have call predecessors, (157), 3 states have call successors, (157) [2023-12-15 20:02:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 18377 states and 30587 transitions. [2023-12-15 20:02:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-15 20:02:41,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:41,320 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:41,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:41,528 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 [2023-12-15 20:02:41,528 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:41,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1284230940, now seen corresponding path program 1 times [2023-12-15 20:02:41,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:41,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601339971] [2023-12-15 20:02:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:41,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:41,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:41,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583451369] [2023-12-15 20:02:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:41,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:41,567 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) [2023-12-15 20:02:41,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:02:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:41,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 20:02:41,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:02:42,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:42,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601339971] [2023-12-15 20:02:42,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:42,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583451369] [2023-12-15 20:02:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583451369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:42,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:42,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 20:02:42,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229372289] [2023-12-15 20:02:42,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:42,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:02:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:02:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:02:42,589 INFO L87 Difference]: Start difference. First operand 18377 states and 30587 transitions. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:46,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:46,648 INFO L93 Difference]: Finished difference Result 76486 states and 124802 transitions. [2023-12-15 20:02:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 20:02:46,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 605 [2023-12-15 20:02:46,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:46,884 INFO L225 Difference]: With dead ends: 76486 [2023-12-15 20:02:46,884 INFO L226 Difference]: Without dead ends: 57770 [2023-12-15 20:02:46,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:02:46,919 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 2108 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 1113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1113 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:46,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 2948 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1113 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 20:02:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57770 states. [2023-12-15 20:02:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57770 to 47435. [2023-12-15 20:02:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47435 states, 33928 states have (on average 1.5273520396132987) internal successors, (51820), 34179 states have internal predecessors, (51820), 12879 states have call successors, (12879), 627 states have call predecessors, (12879), 627 states have return successors, (12879), 12628 states have call predecessors, (12879), 12879 states have call successors, (12879) [2023-12-15 20:02:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47435 states to 47435 states and 77578 transitions. [2023-12-15 20:02:50,011 INFO L78 Accepts]: Start accepts. Automaton has 47435 states and 77578 transitions. Word has length 605 [2023-12-15 20:02:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:50,011 INFO L495 AbstractCegarLoop]: Abstraction has 47435 states and 77578 transitions. [2023-12-15 20:02:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:02:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 47435 states and 77578 transitions. [2023-12-15 20:02:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-15 20:02:50,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:50,025 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:50,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 20:02:50,232 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 [2023-12-15 20:02:50,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:50,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1503085658, now seen corresponding path program 1 times [2023-12-15 20:02:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:50,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801495938] [2023-12-15 20:02:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:50,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:50,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218311548] [2023-12-15 20:02:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:50,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:50,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:50,271 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) [2023-12-15 20:02:50,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:02:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:50,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:02:50,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 6756 proven. 72 refuted. 0 times theorem prover too weak. 10284 trivial. 0 not checked. [2023-12-15 20:02:50,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 204 proven. 72 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-15 20:02:51,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801495938] [2023-12-15 20:02:51,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218311548] [2023-12-15 20:02:51,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218311548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:51,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:51,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 20:02:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356068262] [2023-12-15 20:02:51,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:51,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:02:51,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:02:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:02:51,094 INFO L87 Difference]: Start difference. First operand 47435 states and 77578 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-15 20:02:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:54,952 INFO L93 Difference]: Finished difference Result 113831 states and 186882 transitions. [2023-12-15 20:02:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 20:02:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 605 [2023-12-15 20:02:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:55,102 INFO L225 Difference]: With dead ends: 113831 [2023-12-15 20:02:55,102 INFO L226 Difference]: Without dead ends: 65153 [2023-12-15 20:02:55,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1201 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:02:55,180 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 912 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:55,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 2042 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:02:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65153 states. [2023-12-15 20:02:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65153 to 64211. [2023-12-15 20:02:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64211 states, 48528 states have (on average 1.5699390042861854) internal successors, (76186), 48781 states have internal predecessors, (76186), 14799 states have call successors, (14799), 883 states have call predecessors, (14799), 883 states have return successors, (14799), 14546 states have call predecessors, (14799), 14799 states have call successors, (14799) [2023-12-15 20:02:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64211 states to 64211 states and 105784 transitions. [2023-12-15 20:02:59,288 INFO L78 Accepts]: Start accepts. Automaton has 64211 states and 105784 transitions. Word has length 605 [2023-12-15 20:02:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:59,289 INFO L495 AbstractCegarLoop]: Abstraction has 64211 states and 105784 transitions. [2023-12-15 20:02:59,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-15 20:02:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 64211 states and 105784 transitions. [2023-12-15 20:02:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-15 20:02:59,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:59,302 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:59,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 20:02:59,508 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 [2023-12-15 20:02:59,509 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1701627546, now seen corresponding path program 1 times [2023-12-15 20:02:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:59,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25973170] [2023-12-15 20:02:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:59,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:59,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074558103] [2023-12-15 20:02:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:59,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:59,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:59,546 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) [2023-12-15 20:02:59,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:02:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:59,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:02:59,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-15 20:03:01,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:01,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:01,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25973170] [2023-12-15 20:03:01,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:01,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074558103] [2023-12-15 20:03:01,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074558103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:01,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:01,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:01,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74581651] [2023-12-15 20:03:01,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:01,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:03:01,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:01,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:03:01,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:03:01,179 INFO L87 Difference]: Start difference. First operand 64211 states and 105784 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:03:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:04,249 INFO L93 Difference]: Finished difference Result 100493 states and 165303 transitions. [2023-12-15 20:03:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:03:04,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 605 [2023-12-15 20:03:04,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:04,390 INFO L225 Difference]: With dead ends: 100493 [2023-12-15 20:03:04,390 INFO L226 Difference]: Without dead ends: 64239 [2023-12-15 20:03:04,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:03:04,440 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 757 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:04,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2009 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:03:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64239 states. [2023-12-15 20:03:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64239 to 62083. [2023-12-15 20:03:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62083 states, 46400 states have (on average 1.5545258620689655) internal successors, (72130), 46653 states have internal predecessors, (72130), 14799 states have call successors, (14799), 883 states have call predecessors, (14799), 883 states have return successors, (14799), 14546 states have call predecessors, (14799), 14799 states have call successors, (14799) [2023-12-15 20:03:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62083 states to 62083 states and 101728 transitions. [2023-12-15 20:03:08,430 INFO L78 Accepts]: Start accepts. Automaton has 62083 states and 101728 transitions. Word has length 605 [2023-12-15 20:03:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:08,430 INFO L495 AbstractCegarLoop]: Abstraction has 62083 states and 101728 transitions. [2023-12-15 20:03:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-15 20:03:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 62083 states and 101728 transitions. [2023-12-15 20:03:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-15 20:03:08,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:08,440 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:08,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:08,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 20:03:08,648 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:08,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1920482264, now seen corresponding path program 1 times [2023-12-15 20:03:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:08,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948351834] [2023-12-15 20:03:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:08,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:08,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380407473] [2023-12-15 20:03:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:08,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:08,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:08,699 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:08,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 20:03:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:09,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 20:03:09,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 6756 proven. 72 refuted. 0 times theorem prover too weak. 10284 trivial. 0 not checked. [2023-12-15 20:03:09,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:03:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 204 proven. 72 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-15 20:03:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948351834] [2023-12-15 20:03:10,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380407473] [2023-12-15 20:03:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380407473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:03:10,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:03:10,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-15 20:03:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28726705] [2023-12-15 20:03:10,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:03:10,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 20:03:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 20:03:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:03:10,265 INFO L87 Difference]: Start difference. First operand 62083 states and 101728 transitions. Second operand has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 4 states have call successors, (186), 3 states have call predecessors, (186), 5 states have return successors, (186), 4 states have call predecessors, (186), 4 states have call successors, (186) Received shutdown request... [2023-12-15 20:03:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-15 20:03:16,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1200 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 20:03:16,857 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 3001 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 1338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1338 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:16,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 4896 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1338 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 20:03:16,858 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:03:16,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:16,888 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:03:16,888 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 [2023-12-15 20:03:17,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 20:03:17,060 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (62083states) and FLOYD_HOARE automaton (currently 33 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (143575 states constructed, input type IntersectNwa). [2023-12-15 20:03:17,063 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:17,066 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:03:17,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:03:17 BoogieIcfgContainer [2023-12-15 20:03:17,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:03:17,068 INFO L158 Benchmark]: Toolchain (without parser) took 59611.61ms. Allocated memory was 245.4MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 194.7MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-15 20:03:17,068 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:03:17,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.91ms. Allocated memory is still 245.4MB. Free memory was 194.1MB in the beginning and 163.7MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-15 20:03:17,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.34ms. Allocated memory is still 245.4MB. Free memory was 163.7MB in the beginning and 150.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 20:03:17,070 INFO L158 Benchmark]: Boogie Preprocessor took 116.12ms. Allocated memory is still 245.4MB. Free memory was 150.1MB in the beginning and 135.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 20:03:17,071 INFO L158 Benchmark]: RCFGBuilder took 994.27ms. Allocated memory is still 245.4MB. Free memory was 135.8MB in the beginning and 128.3MB in the end (delta: 7.5MB). Peak memory consumption was 31.7MB. Max. memory is 8.0GB. [2023-12-15 20:03:17,071 INFO L158 Benchmark]: TraceAbstraction took 57990.08ms. Allocated memory was 245.4MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 127.8MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-15 20:03:17,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 405.91ms. Allocated memory is still 245.4MB. Free memory was 194.1MB in the beginning and 163.7MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 99.34ms. Allocated memory is still 245.4MB. Free memory was 163.7MB in the beginning and 150.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 116.12ms. Allocated memory is still 245.4MB. Free memory was 150.1MB in the beginning and 135.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * RCFGBuilder took 994.27ms. Allocated memory is still 245.4MB. Free memory was 135.8MB in the beginning and 128.3MB in the end (delta: 7.5MB). Peak memory consumption was 31.7MB. Max. memory is 8.0GB. * TraceAbstraction took 57990.08ms. Allocated memory was 245.4MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 127.8MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.5GB. 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 constructing difference of abstraction (62083states) and FLOYD_HOARE automaton (currently 33 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (143575 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 323 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.9s, OverallIterations: 16, TraceHistogramMax: 93, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 24.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12671 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12486 mSDsluCounter, 28152 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17759 mSDsCounter, 2986 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7296 IncrementalHoareTripleChecker+Invalid, 10282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2986 mSolverCounterUnsat, 10393 mSDtfsCounter, 7296 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12097 GetRequests, 12000 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64211occurred in iteration=14, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 18942 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 10251 NumberOfCodeBlocks, 10251 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 12047 ConstructedInterpolants, 0 QuantifiedInterpolants, 27550 SizeOfPredicates, 30 NumberOfNonLiveVariables, 22293 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 20 InterpolantComputations, 12 PerfectInterpolantSequences, 341352/342240 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