/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:58:43,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:58:43,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:58:43,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:58:43,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:58:43,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:58:43,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:58:43,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:58:43,897 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:58:43,900 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:58:43,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:58:43,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:58:43,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:58:43,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:58:43,903 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:58:43,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:58:43,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:58:43,903 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:58:43,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:58:43,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:58:43,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:58:43,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:58:43,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:58:43,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:58:43,904 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:58:43,904 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:58:43,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:58:43,905 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:58:43,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:58:43,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:58:43,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:58:43,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:58:43,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:58:43,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:58:43,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:58:43,907 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:58:44,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:58:44,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:58:44,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:58:44,126 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:58:44,126 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:58:44,127 INFO L431 ainManager$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-4.i [2023-12-16 02:58:45,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:58:45,267 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:58:45,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.i [2023-12-16 02:58:45,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8182e8aa0/061377697669449b9b1d20fe6e7d56a8/FLAGf4e1cdc70 [2023-12-16 02:58:45,297 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8182e8aa0/061377697669449b9b1d20fe6e7d56a8 [2023-12-16 02:58:45,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:58:45,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:58:45,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:58:45,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:58:45,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:58:45,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d09306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45, skipping insertion in model container [2023-12-16 02:58:45,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:58:45,487 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-4.i[915,928] [2023-12-16 02:58:45,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:58:45,677 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:58:45,688 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-4.i[915,928] [2023-12-16 02:58:45,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:58:45,784 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:58:45,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45 WrapperNode [2023-12-16 02:58:45,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:58:45,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:58:45,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:58:45,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:58:45,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,891 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 668 [2023-12-16 02:58:45,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:58:45,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:58:45,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:58:45,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:58:45,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,951 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:58:45,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:45,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:46,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:46,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:58:46,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:58:46,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:58:46,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:58:46,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (1/1) ... [2023-12-16 02:58:46,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:58:46,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:46,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:58:46,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:58:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:58:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:58:46,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:58:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:58:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:58:46,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:58:46,168 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:58:46,169 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:58:46,904 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:58:46,948 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:58:46,948 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:58:46,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:58:46 BoogieIcfgContainer [2023-12-16 02:58:46,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:58:46,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:58:46,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:58:46,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:58:46,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:58:45" (1/3) ... [2023-12-16 02:58:46,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:58:46, skipping insertion in model container [2023-12-16 02:58:46,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:45" (2/3) ... [2023-12-16 02:58:46,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:58:46, skipping insertion in model container [2023-12-16 02:58:46,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:58:46" (3/3) ... [2023-12-16 02:58:46,955 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-4.i [2023-12-16 02:58:46,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:58:46,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:58:47,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:58:47,021 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;@2d28acc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:58:47,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:58:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 179 states have (on average 1.6145251396648044) internal successors, (289), 180 states have internal predecessors, (289), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-16 02:58:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-16 02:58:47,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:47,060 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:47,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:47,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:47,065 INFO L85 PathProgramCache]: Analyzing trace with hash 219775601, now seen corresponding path program 1 times [2023-12-16 02:58:47,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163460091] [2023-12-16 02:58:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:47,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163460091] [2023-12-16 02:58:47,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:58:47,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641946843] [2023-12-16 02:58:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:47,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:47,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:47,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:58:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:47,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:58:47,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2023-12-16 02:58:47,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:47,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641946843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:47,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:58:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438032085] [2023-12-16 02:58:47,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:47,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:58:47,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:58:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:58:47,858 INFO L87 Difference]: Start difference. First operand has 263 states, 179 states have (on average 1.6145251396648044) internal successors, (289), 180 states have internal predecessors, (289), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) 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, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2023-12-16 02:58:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:47,900 INFO L93 Difference]: Finished difference Result 522 states and 979 transitions. [2023-12-16 02:58:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:58:47,903 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, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) Word has length 541 [2023-12-16 02:58:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:47,909 INFO L225 Difference]: With dead ends: 522 [2023-12-16 02:58:47,909 INFO L226 Difference]: Without dead ends: 260 [2023-12-16 02:58:47,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:58:47,914 INFO L413 NwaCegarLoop]: 438 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, 438 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:47,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 438 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-16 02:58:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-12-16 02:58:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 177 states have (on average 1.576271186440678) internal successors, (279), 177 states have internal predecessors, (279), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-16 02:58:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 441 transitions. [2023-12-16 02:58:47,956 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 441 transitions. Word has length 541 [2023-12-16 02:58:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:47,956 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 441 transitions. [2023-12-16 02:58:47,956 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, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2023-12-16 02:58:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 441 transitions. [2023-12-16 02:58:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 02:58:47,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:47,964 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:47,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:48,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 02:58:48,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:48,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1875199210, now seen corresponding path program 1 times [2023-12-16 02:58:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494559141] [2023-12-16 02:58:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:48,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475717414] [2023-12-16 02:58:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:48,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:48,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:48,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:58:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:48,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:48,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:48,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:48,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:48,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494559141] [2023-12-16 02:58:48,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:48,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475717414] [2023-12-16 02:58:48,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475717414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:48,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:48,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:48,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903522549] [2023-12-16 02:58:48,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:48,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:48,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:48,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:48,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:48,627 INFO L87 Difference]: Start difference. First operand 260 states and 441 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:48,699 INFO L93 Difference]: Finished difference Result 690 states and 1175 transitions. [2023-12-16 02:58:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:48,699 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 542 [2023-12-16 02:58:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:48,703 INFO L225 Difference]: With dead ends: 690 [2023-12-16 02:58:48,703 INFO L226 Difference]: Without dead ends: 431 [2023-12-16 02:58:48,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:48,704 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 293 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:48,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:48,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-16 02:58:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 428. [2023-12-16 02:58:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 313 states have (on average 1.610223642172524) internal successors, (504), 314 states have internal predecessors, (504), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-16 02:58:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 728 transitions. [2023-12-16 02:58:48,770 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 728 transitions. Word has length 542 [2023-12-16 02:58:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:48,771 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 728 transitions. [2023-12-16 02:58:48,771 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 728 transitions. [2023-12-16 02:58:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 02:58:48,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:48,775 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:48,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:48,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 02:58:48,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:48,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:48,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1833491864, now seen corresponding path program 1 times [2023-12-16 02:58:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:48,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868341178] [2023-12-16 02:58:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:49,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:49,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711738331] [2023-12-16 02:58:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:49,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:49,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:49,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:49,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:58:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:49,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:49,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:49,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868341178] [2023-12-16 02:58:49,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711738331] [2023-12-16 02:58:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711738331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:49,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:49,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936697384] [2023-12-16 02:58:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:49,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:49,381 INFO L87 Difference]: Start difference. First operand 428 states and 728 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:49,456 INFO L93 Difference]: Finished difference Result 1182 states and 2011 transitions. [2023-12-16 02:58:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:49,457 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 542 [2023-12-16 02:58:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:49,465 INFO L225 Difference]: With dead ends: 1182 [2023-12-16 02:58:49,465 INFO L226 Difference]: Without dead ends: 755 [2023-12-16 02:58:49,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:49,468 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 270 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:49,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 943 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:49,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-12-16 02:58:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 752. [2023-12-16 02:58:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 567 states have (on average 1.597883597883598) internal successors, (906), 570 states have internal predecessors, (906), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-16 02:58:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1266 transitions. [2023-12-16 02:58:49,512 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1266 transitions. Word has length 542 [2023-12-16 02:58:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:49,513 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1266 transitions. [2023-12-16 02:58:49,513 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1266 transitions. [2023-12-16 02:58:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-16 02:58:49,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:49,517 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:49,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:49,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:49,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash 114576090, now seen corresponding path program 1 times [2023-12-16 02:58:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834439717] [2023-12-16 02:58:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:49,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106197668] [2023-12-16 02:58:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:49,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:49,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:49,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:49,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:58:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:50,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:50,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:50,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834439717] [2023-12-16 02:58:50,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106197668] [2023-12-16 02:58:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106197668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:50,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:50,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641239272] [2023-12-16 02:58:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:50,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:50,135 INFO L87 Difference]: Start difference. First operand 752 states and 1266 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:50,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:50,193 INFO L93 Difference]: Finished difference Result 2234 states and 3762 transitions. [2023-12-16 02:58:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:50,194 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 542 [2023-12-16 02:58:50,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:50,200 INFO L225 Difference]: With dead ends: 2234 [2023-12-16 02:58:50,200 INFO L226 Difference]: Without dead ends: 1483 [2023-12-16 02:58:50,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:50,203 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 417 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:50,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 867 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-12-16 02:58:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 850. [2023-12-16 02:58:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 665 states have (on average 1.630075187969925) internal successors, (1084), 668 states have internal predecessors, (1084), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-16 02:58:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1444 transitions. [2023-12-16 02:58:50,258 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1444 transitions. Word has length 542 [2023-12-16 02:58:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:50,259 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1444 transitions. [2023-12-16 02:58:50,259 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, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1444 transitions. [2023-12-16 02:58:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-16 02:58:50,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:50,263 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:50,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:50,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:50,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:50,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash 627978490, now seen corresponding path program 1 times [2023-12-16 02:58:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446851294] [2023-12-16 02:58:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:50,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:50,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:50,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726038707] [2023-12-16 02:58:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:50,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:50,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:50,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:50,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:58:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:50,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:58:50,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:51,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:51,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446851294] [2023-12-16 02:58:51,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726038707] [2023-12-16 02:58:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726038707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:51,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:51,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:51,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051974518] [2023-12-16 02:58:51,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:51,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:58:51,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:51,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:58:51,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:58:51,313 INFO L87 Difference]: Start difference. First operand 850 states and 1444 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:51,582 INFO L93 Difference]: Finished difference Result 2560 states and 4339 transitions. [2023-12-16 02:58:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:58:51,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 543 [2023-12-16 02:58:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:51,591 INFO L225 Difference]: With dead ends: 2560 [2023-12-16 02:58:51,591 INFO L226 Difference]: Without dead ends: 1711 [2023-12-16 02:58:51,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:58:51,595 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 480 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:51,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1357 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:58:51,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-12-16 02:58:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1427. [2023-12-16 02:58:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1120 states have (on average 1.6294642857142858) internal successors, (1825), 1124 states have internal predecessors, (1825), 298 states have call successors, (298), 8 states have call predecessors, (298), 8 states have return successors, (298), 294 states have call predecessors, (298), 298 states have call successors, (298) [2023-12-16 02:58:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2421 transitions. [2023-12-16 02:58:51,670 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2421 transitions. Word has length 543 [2023-12-16 02:58:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:51,672 INFO L495 AbstractCegarLoop]: Abstraction has 1427 states and 2421 transitions. [2023-12-16 02:58:51,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2421 transitions. [2023-12-16 02:58:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-16 02:58:51,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:51,677 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:51,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:51,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:51,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash 829802424, now seen corresponding path program 1 times [2023-12-16 02:58:51,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:51,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570109779] [2023-12-16 02:58:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:51,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:51,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578602387] [2023-12-16 02:58:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:51,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:51,926 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:51,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:58:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:52,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:52,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6518 proven. 129 refuted. 0 times theorem prover too weak. 6313 trivial. 0 not checked. [2023-12-16 02:58:52,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 111 proven. 129 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:58:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:52,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570109779] [2023-12-16 02:58:52,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:52,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578602387] [2023-12-16 02:58:52,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578602387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:52,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:52,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:58:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883952844] [2023-12-16 02:58:52,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:58:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:58:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:58:52,727 INFO L87 Difference]: Start difference. First operand 1427 states and 2421 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, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-16 02:58:53,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:53,105 INFO L93 Difference]: Finished difference Result 2261 states and 3839 transitions. [2023-12-16 02:58:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:58:53,106 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, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 543 [2023-12-16 02:58:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:53,109 INFO L225 Difference]: With dead ends: 2261 [2023-12-16 02:58:53,109 INFO L226 Difference]: Without dead ends: 835 [2023-12-16 02:58:53,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1088 GetRequests, 1078 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:58:53,113 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 751 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:53,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 840 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:58:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-12-16 02:58:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 827. [2023-12-16 02:58:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 627 states have (on average 1.5837320574162679) internal successors, (993), 628 states have internal predecessors, (993), 193 states have call successors, (193), 6 states have call predecessors, (193), 6 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) [2023-12-16 02:58:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1379 transitions. [2023-12-16 02:58:53,153 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1379 transitions. Word has length 543 [2023-12-16 02:58:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:53,154 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1379 transitions. [2023-12-16 02:58:53,154 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, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-16 02:58:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1379 transitions. [2023-12-16 02:58:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-16 02:58:53,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:53,158 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:53,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:53,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:53,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:53,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1563618438, now seen corresponding path program 1 times [2023-12-16 02:58:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:53,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469529885] [2023-12-16 02:58:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:53,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:53,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66691011] [2023-12-16 02:58:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:53,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:53,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:53,414 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:53,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:58:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:53,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:58:53,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:53,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:53,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:53,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469529885] [2023-12-16 02:58:53,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:53,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66691011] [2023-12-16 02:58:53,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66691011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:53,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:53,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:58:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147888145] [2023-12-16 02:58:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:53,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:58:53,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:58:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:58:53,836 INFO L87 Difference]: Start difference. First operand 827 states and 1379 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:54,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:54,847 INFO L93 Difference]: Finished difference Result 5118 states and 8427 transitions. [2023-12-16 02:58:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 02:58:54,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 547 [2023-12-16 02:58:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:54,865 INFO L225 Difference]: With dead ends: 5118 [2023-12-16 02:58:54,869 INFO L226 Difference]: Without dead ends: 4292 [2023-12-16 02:58:54,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 02:58:54,872 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2691 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:54,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 2057 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:58:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2023-12-16 02:58:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 2060. [2023-12-16 02:58:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1690 states have (on average 1.6) internal successors, (2704), 1695 states have internal predecessors, (2704), 349 states have call successors, (349), 20 states have call predecessors, (349), 20 states have return successors, (349), 344 states have call predecessors, (349), 349 states have call successors, (349) [2023-12-16 02:58:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3402 transitions. [2023-12-16 02:58:55,016 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3402 transitions. Word has length 547 [2023-12-16 02:58:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:55,017 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 3402 transitions. [2023-12-16 02:58:55,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:55,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3402 transitions. [2023-12-16 02:58:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-16 02:58:55,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:55,022 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:55,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:55,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:55,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:55,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1205585980, now seen corresponding path program 1 times [2023-12-16 02:58:55,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:55,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47795113] [2023-12-16 02:58:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:55,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:55,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554797011] [2023-12-16 02:58:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:55,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:55,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:55,274 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:55,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 02:58:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:55,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:58:55,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:55,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:55,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47795113] [2023-12-16 02:58:55,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554797011] [2023-12-16 02:58:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554797011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:55,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:55,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:58:55,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332594791] [2023-12-16 02:58:55,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:55,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:58:55,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:58:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:58:55,649 INFO L87 Difference]: Start difference. First operand 2060 states and 3402 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:55,909 INFO L93 Difference]: Finished difference Result 5512 states and 9117 transitions. [2023-12-16 02:58:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:58:55,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 547 [2023-12-16 02:58:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:55,919 INFO L225 Difference]: With dead ends: 5512 [2023-12-16 02:58:55,920 INFO L226 Difference]: Without dead ends: 3085 [2023-12-16 02:58:55,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:58:55,924 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 848 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:55,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1594 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 02:58:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2023-12-16 02:58:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 1971. [2023-12-16 02:58:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1714 states have (on average 1.647607934655776) internal successors, (2824), 1716 states have internal predecessors, (2824), 240 states have call successors, (240), 16 states have call predecessors, (240), 16 states have return successors, (240), 238 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-16 02:58:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 3304 transitions. [2023-12-16 02:58:56,012 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 3304 transitions. Word has length 547 [2023-12-16 02:58:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:56,013 INFO L495 AbstractCegarLoop]: Abstraction has 1971 states and 3304 transitions. [2023-12-16 02:58:56,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 3304 transitions. [2023-12-16 02:58:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-16 02:58:56,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:56,018 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:56,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:56,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 02:58:56,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:56,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:56,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1931848776, now seen corresponding path program 1 times [2023-12-16 02:58:56,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:56,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780505585] [2023-12-16 02:58:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:56,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:56,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110029936] [2023-12-16 02:58:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:56,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:56,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:56,265 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:56,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 02:58:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:56,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:56,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 3698 proven. 39 refuted. 0 times theorem prover too weak. 9223 trivial. 0 not checked. [2023-12-16 02:58:56,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 201 proven. 39 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:58:56,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780505585] [2023-12-16 02:58:56,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110029936] [2023-12-16 02:58:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110029936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:56,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:56,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:58:56,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221293185] [2023-12-16 02:58:56,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:56,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:58:56,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:56,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:58:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:58:56,965 INFO L87 Difference]: Start difference. First operand 1971 states and 3304 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-16 02:58:57,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:57,337 INFO L93 Difference]: Finished difference Result 3969 states and 6633 transitions. [2023-12-16 02:58:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:58:57,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 547 [2023-12-16 02:58:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:57,345 INFO L225 Difference]: With dead ends: 3969 [2023-12-16 02:58:57,345 INFO L226 Difference]: Without dead ends: 1999 [2023-12-16 02:58:57,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1086 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:58:57,348 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 274 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:57,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 862 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:58:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-12-16 02:58:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1979. [2023-12-16 02:58:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1720 states have (on average 1.6267441860465117) internal successors, (2798), 1722 states have internal predecessors, (2798), 240 states have call successors, (240), 18 states have call predecessors, (240), 18 states have return successors, (240), 238 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-16 02:58:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 3278 transitions. [2023-12-16 02:58:57,418 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 3278 transitions. Word has length 547 [2023-12-16 02:58:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:57,418 INFO L495 AbstractCegarLoop]: Abstraction has 1979 states and 3278 transitions. [2023-12-16 02:58:57,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-16 02:58:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 3278 transitions. [2023-12-16 02:58:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-16 02:58:57,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:57,423 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:57,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:57,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:57,630 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:57,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2021739615, now seen corresponding path program 1 times [2023-12-16 02:58:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418969249] [2023-12-16 02:58:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:57,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:57,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660210258] [2023-12-16 02:58:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:57,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:57,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:57,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:57,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 02:58:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:57,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:58:57,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:58,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:58,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418969249] [2023-12-16 02:58:58,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660210258] [2023-12-16 02:58:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660210258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:58,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:58,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:58:58,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770229631] [2023-12-16 02:58:58,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:58,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:58:58,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:58:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:58:58,132 INFO L87 Difference]: Start difference. First operand 1979 states and 3278 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:58,674 INFO L93 Difference]: Finished difference Result 7747 states and 12729 transitions. [2023-12-16 02:58:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:58:58,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 548 [2023-12-16 02:58:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:58,695 INFO L225 Difference]: With dead ends: 7747 [2023-12-16 02:58:58,695 INFO L226 Difference]: Without dead ends: 5769 [2023-12-16 02:58:58,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:58:58,700 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 842 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:58,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1888 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:58:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2023-12-16 02:58:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 4507. [2023-12-16 02:58:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4507 states, 3990 states have (on average 1.6295739348370928) internal successors, (6502), 3994 states have internal predecessors, (6502), 480 states have call successors, (480), 36 states have call predecessors, (480), 36 states have return successors, (480), 476 states have call predecessors, (480), 480 states have call successors, (480) [2023-12-16 02:58:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 7462 transitions. [2023-12-16 02:58:58,955 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 7462 transitions. Word has length 548 [2023-12-16 02:58:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:58,956 INFO L495 AbstractCegarLoop]: Abstraction has 4507 states and 7462 transitions. [2023-12-16 02:58:58,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:58:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 7462 transitions. [2023-12-16 02:58:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-16 02:58:58,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:58,962 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:58,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:59,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 02:58:59,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:59,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash 386229859, now seen corresponding path program 1 times [2023-12-16 02:58:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:59,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947907591] [2023-12-16 02:58:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:59,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:59,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:59,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101036006] [2023-12-16 02:58:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:59,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:59,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:59,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:59,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 02:58:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:59,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 02:58:59,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:58:59,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:59,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:59,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947907591] [2023-12-16 02:58:59,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:59,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101036006] [2023-12-16 02:58:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101036006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:59,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:59,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:58:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656080199] [2023-12-16 02:58:59,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:59,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:58:59,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:58:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:58:59,695 INFO L87 Difference]: Start difference. First operand 4507 states and 7462 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:01,255 INFO L93 Difference]: Finished difference Result 18185 states and 29483 transitions. [2023-12-16 02:59:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 02:59:01,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 548 [2023-12-16 02:59:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:01,313 INFO L225 Difference]: With dead ends: 18185 [2023-12-16 02:59:01,314 INFO L226 Difference]: Without dead ends: 13679 [2023-12-16 02:59:01,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:59:01,324 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1383 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:01,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 2220 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 02:59:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13679 states. [2023-12-16 02:59:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13679 to 5803. [2023-12-16 02:59:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 5174 states have (on average 1.6277541553923462) internal successors, (8422), 5178 states have internal predecessors, (8422), 584 states have call successors, (584), 44 states have call predecessors, (584), 44 states have return successors, (584), 580 states have call predecessors, (584), 584 states have call successors, (584) [2023-12-16 02:59:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 9590 transitions. [2023-12-16 02:59:01,743 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 9590 transitions. Word has length 548 [2023-12-16 02:59:01,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:01,744 INFO L495 AbstractCegarLoop]: Abstraction has 5803 states and 9590 transitions. [2023-12-16 02:59:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 9590 transitions. [2023-12-16 02:59:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-16 02:59:01,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:01,754 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:01,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:01,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 02:59:01,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:01,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1144448861, now seen corresponding path program 1 times [2023-12-16 02:59:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399766030] [2023-12-16 02:59:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:01,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:01,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117840782] [2023-12-16 02:59:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:01,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:02,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:02,000 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:02,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 02:59:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:02,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:59:02,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 4110 proven. 45 refuted. 0 times theorem prover too weak. 8805 trivial. 0 not checked. [2023-12-16 02:59:02,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 195 proven. 45 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:59:02,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399766030] [2023-12-16 02:59:02,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:02,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117840782] [2023-12-16 02:59:02,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117840782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:59:02,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:59:02,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:59:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498795025] [2023-12-16 02:59:02,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:59:02,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:59:02,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:02,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:59:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:59:02,733 INFO L87 Difference]: Start difference. First operand 5803 states and 9590 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-16 02:59:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:03,310 INFO L93 Difference]: Finished difference Result 11669 states and 19239 transitions. [2023-12-16 02:59:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:59:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 548 [2023-12-16 02:59:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:03,322 INFO L225 Difference]: With dead ends: 11669 [2023-12-16 02:59:03,322 INFO L226 Difference]: Without dead ends: 5243 [2023-12-16 02:59:03,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1088 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:59:03,332 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 439 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:03,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 858 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:59:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2023-12-16 02:59:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 5195. [2023-12-16 02:59:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 4562 states have (on average 1.6137658921525646) internal successors, (7362), 4566 states have internal predecessors, (7362), 584 states have call successors, (584), 48 states have call predecessors, (584), 48 states have return successors, (584), 580 states have call predecessors, (584), 584 states have call successors, (584) [2023-12-16 02:59:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 8530 transitions. [2023-12-16 02:59:03,562 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 8530 transitions. Word has length 548 [2023-12-16 02:59:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:03,563 INFO L495 AbstractCegarLoop]: Abstraction has 5195 states and 8530 transitions. [2023-12-16 02:59:03,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-16 02:59:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 8530 transitions. [2023-12-16 02:59:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-16 02:59:03,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:03,570 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:03,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:03,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 02:59:03,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:03,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1984686726, now seen corresponding path program 1 times [2023-12-16 02:59:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13811283] [2023-12-16 02:59:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:03,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:03,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150424403] [2023-12-16 02:59:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:03,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:03,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:03,815 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:03,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 02:59:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:04,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:59:04,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6560 proven. 120 refuted. 0 times theorem prover too weak. 6280 trivial. 0 not checked. [2023-12-16 02:59:04,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:59:04,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:04,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13811283] [2023-12-16 02:59:04,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:04,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150424403] [2023-12-16 02:59:04,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150424403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:59:04,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:59:04,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:59:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544629456] [2023-12-16 02:59:04,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:59:04,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:59:04,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:59:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:59:04,726 INFO L87 Difference]: Start difference. First operand 5195 states and 8530 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 02:59:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:05,285 INFO L93 Difference]: Finished difference Result 10245 states and 16747 transitions. [2023-12-16 02:59:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:59:05,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 548 [2023-12-16 02:59:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:05,295 INFO L225 Difference]: With dead ends: 10245 [2023-12-16 02:59:05,295 INFO L226 Difference]: Without dead ends: 4271 [2023-12-16 02:59:05,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1088 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:59:05,304 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 566 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:05,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 821 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:59:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2023-12-16 02:59:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 3923. [2023-12-16 02:59:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3282 states have (on average 1.5722120658135283) internal successors, (5160), 3286 states have internal predecessors, (5160), 584 states have call successors, (584), 56 states have call predecessors, (584), 56 states have return successors, (584), 580 states have call predecessors, (584), 584 states have call successors, (584) [2023-12-16 02:59:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6328 transitions. [2023-12-16 02:59:05,561 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6328 transitions. Word has length 548 [2023-12-16 02:59:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:05,562 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 6328 transitions. [2023-12-16 02:59:05,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 02:59:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6328 transitions. [2023-12-16 02:59:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-12-16 02:59:05,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:05,567 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:05,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 02:59:05,774 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:05,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash -206919955, now seen corresponding path program 1 times [2023-12-16 02:59:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:05,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322644405] [2023-12-16 02:59:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:05,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:05,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686499858] [2023-12-16 02:59:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:05,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:05,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:05,811 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:05,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 02:59:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:06,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 02:59:06,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 398 proven. 237 refuted. 0 times theorem prover too weak. 12325 trivial. 0 not checked. [2023-12-16 02:59:06,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 3 proven. 237 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:59:07,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:07,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322644405] [2023-12-16 02:59:07,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:07,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686499858] [2023-12-16 02:59:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686499858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:59:07,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:59:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 02:59:07,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289207349] [2023-12-16 02:59:07,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:59:07,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 02:59:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 02:59:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:59:07,096 INFO L87 Difference]: Start difference. First operand 3923 states and 6328 transitions. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) [2023-12-16 02:59:08,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:08,385 INFO L93 Difference]: Finished difference Result 11967 states and 19158 transitions. [2023-12-16 02:59:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 02:59:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) Word has length 549 [2023-12-16 02:59:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:08,404 INFO L225 Difference]: With dead ends: 11967 [2023-12-16 02:59:08,404 INFO L226 Difference]: Without dead ends: 8045 [2023-12-16 02:59:08,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1087 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-12-16 02:59:08,413 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 703 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:08,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2645 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:59:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2023-12-16 02:59:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 7899. [2023-12-16 02:59:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 6602 states have (on average 1.5652832475007574) internal successors, (10334), 6610 states have internal predecessors, (10334), 1168 states have call successors, (1168), 128 states have call predecessors, (1168), 128 states have return successors, (1168), 1160 states have call predecessors, (1168), 1168 states have call successors, (1168) [2023-12-16 02:59:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 12670 transitions. [2023-12-16 02:59:08,898 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 12670 transitions. Word has length 549 [2023-12-16 02:59:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:08,899 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 12670 transitions. [2023-12-16 02:59:08,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) [2023-12-16 02:59:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 12670 transitions. [2023-12-16 02:59:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-12-16 02:59:08,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:08,905 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:08,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:09,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:09,112 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:09,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -206860373, now seen corresponding path program 1 times [2023-12-16 02:59:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415448309] [2023-12-16 02:59:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:09,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:09,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927893334] [2023-12-16 02:59:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:09,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:09,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:09,155 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:09,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 02:59:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:09,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 02:59:09,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 398 proven. 237 refuted. 0 times theorem prover too weak. 12325 trivial. 0 not checked. [2023-12-16 02:59:09,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 3 proven. 237 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:59:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415448309] [2023-12-16 02:59:10,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927893334] [2023-12-16 02:59:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927893334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:59:10,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:59:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-16 02:59:10,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142546278] [2023-12-16 02:59:10,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:59:10,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 02:59:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 02:59:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-16 02:59:10,364 INFO L87 Difference]: Start difference. First operand 7899 states and 12670 transitions. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) [2023-12-16 02:59:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:11,069 INFO L93 Difference]: Finished difference Result 11989 states and 19141 transitions. [2023-12-16 02:59:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 02:59:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) Word has length 549 [2023-12-16 02:59:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:11,077 INFO L225 Difference]: With dead ends: 11989 [2023-12-16 02:59:11,078 INFO L226 Difference]: Without dead ends: 4059 [2023-12-16 02:59:11,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1086 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2023-12-16 02:59:11,089 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 905 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:11,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1035 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:59:11,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2023-12-16 02:59:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 3971. [2023-12-16 02:59:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3971 states, 3314 states have (on average 1.5497887748943875) internal successors, (5136), 3318 states have internal predecessors, (5136), 584 states have call successors, (584), 72 states have call predecessors, (584), 72 states have return successors, (584), 580 states have call predecessors, (584), 584 states have call successors, (584) [2023-12-16 02:59:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3971 states to 3971 states and 6304 transitions. [2023-12-16 02:59:11,366 INFO L78 Accepts]: Start accepts. Automaton has 3971 states and 6304 transitions. Word has length 549 [2023-12-16 02:59:11,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:11,366 INFO L495 AbstractCegarLoop]: Abstraction has 3971 states and 6304 transitions. [2023-12-16 02:59:11,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) [2023-12-16 02:59:11,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3971 states and 6304 transitions. [2023-12-16 02:59:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-16 02:59:11,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:11,371 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:11,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 02:59:11,581 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:11,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1116411898, now seen corresponding path program 1 times [2023-12-16 02:59:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793709188] [2023-12-16 02:59:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:11,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:11,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925483240] [2023-12-16 02:59:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:11,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:11,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:11,625 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) [2023-12-16 02:59:11,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 02:59:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:11,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:59:11,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:59:12,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:59:12,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:12,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793709188] [2023-12-16 02:59:12,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:12,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925483240] [2023-12-16 02:59:12,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925483240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:59:12,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:59:12,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:59:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705568752] [2023-12-16 02:59:12,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:59:12,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:59:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:59:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:59:12,016 INFO L87 Difference]: Start difference. First operand 3971 states and 6304 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:12,750 INFO L93 Difference]: Finished difference Result 11943 states and 18934 transitions. [2023-12-16 02:59:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:59:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 550 [2023-12-16 02:59:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:12,766 INFO L225 Difference]: With dead ends: 11943 [2023-12-16 02:59:12,767 INFO L226 Difference]: Without dead ends: 7973 [2023-12-16 02:59:12,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:59:12,774 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 421 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:12,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1871 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:59:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7973 states. [2023-12-16 02:59:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7973 to 7931. [2023-12-16 02:59:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7931 states, 6618 states have (on average 1.5469930492595951) internal successors, (10238), 6626 states have internal predecessors, (10238), 1168 states have call successors, (1168), 144 states have call predecessors, (1168), 144 states have return successors, (1168), 1160 states have call predecessors, (1168), 1168 states have call successors, (1168) [2023-12-16 02:59:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 12574 transitions. [2023-12-16 02:59:13,288 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 12574 transitions. Word has length 550 [2023-12-16 02:59:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:13,288 INFO L495 AbstractCegarLoop]: Abstraction has 7931 states and 12574 transitions. [2023-12-16 02:59:13,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 12574 transitions. [2023-12-16 02:59:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-16 02:59:13,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:13,293 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:13,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:13,500 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 [2023-12-16 02:59:13,501 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:13,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1925758524, now seen corresponding path program 1 times [2023-12-16 02:59:13,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:13,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65461112] [2023-12-16 02:59:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:13,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413388214] [2023-12-16 02:59:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:13,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:13,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:13,536 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:13,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 02:59:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:13,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:59:13,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:59:14,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:59:14,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65461112] [2023-12-16 02:59:14,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413388214] [2023-12-16 02:59:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413388214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:59:14,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:59:14,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:59:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203398998] [2023-12-16 02:59:14,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:59:14,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:59:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:59:14,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:59:14,377 INFO L87 Difference]: Start difference. First operand 7931 states and 12574 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:16,061 INFO L93 Difference]: Finished difference Result 26033 states and 41029 transitions. [2023-12-16 02:59:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:59:16,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 550 [2023-12-16 02:59:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:16,093 INFO L225 Difference]: With dead ends: 26033 [2023-12-16 02:59:16,094 INFO L226 Difference]: Without dead ends: 18103 [2023-12-16 02:59:16,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:59:16,108 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 823 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:16,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1249 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:59:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18103 states. [2023-12-16 02:59:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18103 to 10067. [2023-12-16 02:59:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10067 states, 7922 states have (on average 1.4549356223175967) internal successors, (11526), 7946 states have internal predecessors, (11526), 1872 states have call successors, (1872), 272 states have call predecessors, (1872), 272 states have return successors, (1872), 1848 states have call predecessors, (1872), 1872 states have call successors, (1872) [2023-12-16 02:59:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10067 states to 10067 states and 15270 transitions. [2023-12-16 02:59:17,166 INFO L78 Accepts]: Start accepts. Automaton has 10067 states and 15270 transitions. Word has length 550 [2023-12-16 02:59:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:17,166 INFO L495 AbstractCegarLoop]: Abstraction has 10067 states and 15270 transitions. [2023-12-16 02:59:17,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 10067 states and 15270 transitions. [2023-12-16 02:59:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-16 02:59:17,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:17,172 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:17,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:17,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 02:59:17,382 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:17,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1753010310, now seen corresponding path program 1 times [2023-12-16 02:59:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:17,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560798096] [2023-12-16 02:59:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:17,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:17,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580890507] [2023-12-16 02:59:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:17,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:17,443 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:17,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 02:59:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:17,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:59:17,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 2528 proven. 24 refuted. 0 times theorem prover too weak. 10408 trivial. 0 not checked. [2023-12-16 02:59:17,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 216 proven. 24 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:59:18,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560798096] [2023-12-16 02:59:18,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580890507] [2023-12-16 02:59:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580890507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:59:18,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:59:18,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 02:59:18,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26835175] [2023-12-16 02:59:18,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:59:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:59:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:18,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:59:18,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:59:18,129 INFO L87 Difference]: Start difference. First operand 10067 states and 15270 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-16 02:59:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:19,611 INFO L93 Difference]: Finished difference Result 20261 states and 30595 transitions. [2023-12-16 02:59:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 02:59:19,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 550 [2023-12-16 02:59:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:19,628 INFO L225 Difference]: With dead ends: 20261 [2023-12-16 02:59:19,628 INFO L226 Difference]: Without dead ends: 10195 [2023-12-16 02:59:19,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1091 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-16 02:59:19,640 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 818 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:19,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 811 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:59:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10195 states. [2023-12-16 02:59:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10195 to 9843. [2023-12-16 02:59:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9843 states, 7690 states have (on average 1.4540962288686605) internal successors, (11182), 7714 states have internal predecessors, (11182), 1872 states have call successors, (1872), 280 states have call predecessors, (1872), 280 states have return successors, (1872), 1848 states have call predecessors, (1872), 1872 states have call successors, (1872) [2023-12-16 02:59:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9843 states to 9843 states and 14926 transitions. [2023-12-16 02:59:20,606 INFO L78 Accepts]: Start accepts. Automaton has 9843 states and 14926 transitions. Word has length 550 [2023-12-16 02:59:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:20,607 INFO L495 AbstractCegarLoop]: Abstraction has 9843 states and 14926 transitions. [2023-12-16 02:59:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-16 02:59:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 9843 states and 14926 transitions. [2023-12-16 02:59:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-16 02:59:20,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:20,612 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:20,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:20,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 02:59:20,820 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:20,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash 997401474, now seen corresponding path program 1 times [2023-12-16 02:59:20,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792899107] [2023-12-16 02:59:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:20,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753141756] [2023-12-16 02:59:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:20,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:20,856 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:20,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 02:59:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:21,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:59:21,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-16 02:59:21,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:59:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:21,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792899107] [2023-12-16 02:59:21,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:21,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753141756] [2023-12-16 02:59:21,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753141756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:59:21,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:59:21,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:59:21,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204646454] [2023-12-16 02:59:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:59:21,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:59:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:59:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:59:21,699 INFO L87 Difference]: Start difference. First operand 9843 states and 14926 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:22,967 INFO L93 Difference]: Finished difference Result 22075 states and 33473 transitions. [2023-12-16 02:59:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:59:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 550 [2023-12-16 02:59:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:22,989 INFO L225 Difference]: With dead ends: 22075 [2023-12-16 02:59:22,989 INFO L226 Difference]: Without dead ends: 12233 [2023-12-16 02:59:23,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:59:23,004 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 395 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:23,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1312 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:59:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12233 states. [2023-12-16 02:59:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12233 to 10251. [2023-12-16 02:59:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10251 states, 8098 states have (on average 1.4606075574215855) internal successors, (11828), 8122 states have internal predecessors, (11828), 1872 states have call successors, (1872), 280 states have call predecessors, (1872), 280 states have return successors, (1872), 1848 states have call predecessors, (1872), 1872 states have call successors, (1872) [2023-12-16 02:59:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10251 states to 10251 states and 15572 transitions. [2023-12-16 02:59:24,123 INFO L78 Accepts]: Start accepts. Automaton has 10251 states and 15572 transitions. Word has length 550 [2023-12-16 02:59:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:24,124 INFO L495 AbstractCegarLoop]: Abstraction has 10251 states and 15572 transitions. [2023-12-16 02:59:24,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-16 02:59:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 10251 states and 15572 transitions. [2023-12-16 02:59:24,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-16 02:59:24,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:24,129 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:24,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:24,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:24,338 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:24,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1438954174, now seen corresponding path program 1 times [2023-12-16 02:59:24,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829504288] [2023-12-16 02:59:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:24,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:24,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568951007] [2023-12-16 02:59:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:24,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:24,374 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:24,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 02:59:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:24,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:59:24,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6504 proven. 108 refuted. 0 times theorem prover too weak. 6348 trivial. 0 not checked. [2023-12-16 02:59:24,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 132 proven. 108 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-16 02:59:25,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829504288] [2023-12-16 02:59:25,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568951007] [2023-12-16 02:59:25,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568951007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:59:25,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:59:25,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 02:59:25,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957894062] [2023-12-16 02:59:25,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:59:25,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:59:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:59:25,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:59:25,223 INFO L87 Difference]: Start difference. First operand 10251 states and 15572 transitions. Second operand has 8 states, 8 states have (on average 28.625) internal successors, (229), 8 states have internal predecessors, (229), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-16 02:59:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:26,618 INFO L93 Difference]: Finished difference Result 20437 states and 30613 transitions. [2023-12-16 02:59:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:59:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.625) internal successors, (229), 8 states have internal predecessors, (229), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 550 [2023-12-16 02:59:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:26,636 INFO L225 Difference]: With dead ends: 20437 [2023-12-16 02:59:26,636 INFO L226 Difference]: Without dead ends: 9899 [2023-12-16 02:59:26,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1092 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 02:59:26,649 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 569 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:26,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 757 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:59:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2023-12-16 02:59:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 9547. [2023-12-16 02:59:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9547 states, 7378 states have (on average 1.4071564109514774) internal successors, (10382), 7402 states have internal predecessors, (10382), 1872 states have call successors, (1872), 296 states have call predecessors, (1872), 296 states have return successors, (1872), 1848 states have call predecessors, (1872), 1872 states have call successors, (1872) [2023-12-16 02:59:27,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9547 states to 9547 states and 14126 transitions. [2023-12-16 02:59:27,643 INFO L78 Accepts]: Start accepts. Automaton has 9547 states and 14126 transitions. Word has length 550 [2023-12-16 02:59:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:27,643 INFO L495 AbstractCegarLoop]: Abstraction has 9547 states and 14126 transitions. [2023-12-16 02:59:27,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.625) internal successors, (229), 8 states have internal predecessors, (229), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-16 02:59:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 9547 states and 14126 transitions. [2023-12-16 02:59:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-16 02:59:27,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:27,649 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:27,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-16 02:59:27,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:27,856 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:27,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1335991164, now seen corresponding path program 1 times [2023-12-16 02:59:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:27,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683333635] [2023-12-16 02:59:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:27,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:27,888 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:27,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073379916] [2023-12-16 02:59:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:27,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:27,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:27,889 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:27,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-16 02:59:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:32,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 02:59:32,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 2484 proven. 1041 refuted. 0 times theorem prover too weak. 9435 trivial. 0 not checked. [2023-12-16 02:59:39,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 02:59:42,700 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:59:42,710 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:59:42,710 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:59:42,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-16 02:59:42,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:42,905 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 551 with TraceHistMax 81,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2023-12-16 02:59:42,909 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:42,910 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:59:42,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:59:42 BoogieIcfgContainer [2023-12-16 02:59:42,912 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:59:42,912 INFO L158 Benchmark]: Toolchain (without parser) took 57612.12ms. Allocated memory was 289.4MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 238.0MB in the beginning and 812.9MB in the end (delta: -574.9MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 02:59:42,912 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 151.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:59:42,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.79ms. Allocated memory is still 289.4MB. Free memory was 237.7MB in the beginning and 206.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 02:59:42,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.04ms. Allocated memory is still 289.4MB. Free memory was 206.3MB in the beginning and 245.8MB in the end (delta: -39.5MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2023-12-16 02:59:42,913 INFO L158 Benchmark]: Boogie Preprocessor took 119.18ms. Allocated memory is still 289.4MB. Free memory was 245.8MB in the beginning and 232.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 02:59:42,913 INFO L158 Benchmark]: RCFGBuilder took 936.88ms. Allocated memory is still 289.4MB. Free memory was 231.6MB in the beginning and 155.6MB in the end (delta: 76.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2023-12-16 02:59:42,913 INFO L158 Benchmark]: TraceAbstraction took 55961.27ms. Allocated memory was 289.4MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 155.1MB in the beginning and 812.9MB in the end (delta: -657.8MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-16 02:59:42,914 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 151.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 483.79ms. Allocated memory is still 289.4MB. Free memory was 237.7MB in the beginning and 206.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 91.04ms. Allocated memory is still 289.4MB. Free memory was 206.3MB in the beginning and 245.8MB in the end (delta: -39.5MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 119.18ms. Allocated memory is still 289.4MB. Free memory was 245.8MB in the beginning and 232.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * RCFGBuilder took 936.88ms. Allocated memory is still 289.4MB. Free memory was 231.6MB in the beginning and 155.6MB in the end (delta: 76.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. * TraceAbstraction took 55961.27ms. Allocated memory was 289.4MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 155.1MB in the beginning and 812.9MB in the end (delta: -657.8MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 551 with TraceHistMax 81,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 263 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.9s, OverallIterations: 21, TraceHistogramMax: 81, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14146 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13888 mSDsluCounter, 25561 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15622 mSDsCounter, 3288 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6834 IncrementalHoareTripleChecker+Invalid, 10122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3288 mSolverCounterUnsat, 9939 mSDtfsCounter, 6834 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15376 GetRequests, 15223 SyntacticMatches, 12 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10251occurred in iteration=19, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 24829 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 11475 NumberOfCodeBlocks, 11475 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 15290 ConstructedInterpolants, 14 QuantifiedInterpolants, 36831 SizeOfPredicates, 46 NumberOfNonLiveVariables, 26202 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 28 InterpolantComputations, 12 PerfectInterpolantSequences, 361002/362880 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