/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-47.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:49:35,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:49:35,928 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:49:35,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:49:35,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:49:35,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:49:35,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:49:35,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:49:35,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:49:35,974 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:49:35,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:49:35,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:49:35,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:49:35,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:49:35,975 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:49:35,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:49:35,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:49:35,976 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:49:35,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:49:35,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:49:35,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:49:35,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:49:35,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:49:35,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:49:35,978 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:49:35,978 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:49:35,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:49:35,978 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:49:35,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:49:35,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:49:35,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:49:35,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:49:35,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:49:35,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:49:35,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:49:35,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:49:35,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:49:35,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:49:35,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:49:35,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:49:35,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:49:35,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:49:35,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:49:35,981 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:49:36,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:49:36,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:49:36,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:49:36,184 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:49:36,184 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:49:36,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-47.i [2023-12-15 19:49:37,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:49:37,385 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:49:37,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-47.i [2023-12-15 19:49:37,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b529bfccf/965acc13f84e425fb6ff33a71d032288/FLAGe31f63e6b [2023-12-15 19:49:37,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b529bfccf/965acc13f84e425fb6ff33a71d032288 [2023-12-15 19:49:37,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:49:37,406 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:49:37,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:49:37,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:49:37,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:49:37,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee30613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37, skipping insertion in model container [2023-12-15 19:49:37,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:49:37,592 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-47.i[916,929] [2023-12-15 19:49:37,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:49:37,688 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:49:37,696 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-47.i[916,929] [2023-12-15 19:49:37,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:49:37,768 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:49:37,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37 WrapperNode [2023-12-15 19:49:37,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:49:37,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:49:37,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:49:37,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:49:37,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,834 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 553 [2023-12-15 19:49:37,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:49:37,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:49:37,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:49:37,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:49:37,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,870 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:49:37,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:49:37,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:49:37,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:49:37,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:49:37,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (1/1) ... [2023-12-15 19:49:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:49:37,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:37,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:49:37,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:49:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:49:37,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:49:37,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:49:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:49:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:49:37,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:49:38,077 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:49:38,078 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:49:38,670 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:49:38,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:49:38,703 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:49:38,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:49:38 BoogieIcfgContainer [2023-12-15 19:49:38,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:49:38,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:49:38,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:49:38,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:49:38,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:49:37" (1/3) ... [2023-12-15 19:49:38,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62922430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:49:38, skipping insertion in model container [2023-12-15 19:49:38,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:49:37" (2/3) ... [2023-12-15 19:49:38,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62922430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:49:38, skipping insertion in model container [2023-12-15 19:49:38,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:49:38" (3/3) ... [2023-12-15 19:49:38,709 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-47.i [2023-12-15 19:49:38,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:49:38,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:49:38,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:49:38,780 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;@7e3df6b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:49:38,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:49:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 145 states have internal predecessors, (231), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-15 19:49:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-15 19:49:38,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:38,807 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:38,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:38,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:38,817 INFO L85 PathProgramCache]: Analyzing trace with hash -937667184, now seen corresponding path program 1 times [2023-12-15 19:49:38,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:38,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544796788] [2023-12-15 19:49:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:39,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:39,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544796788] [2023-12-15 19:49:39,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:49:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457236381] [2023-12-15 19:49:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:39,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:39,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:39,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:39,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:49:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:39,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:49:39,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2023-12-15 19:49:39,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:39,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457236381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:39,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:39,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:49:39,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289362114] [2023-12-15 19:49:39,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:39,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:49:39,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:49:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:49:39,522 INFO L87 Difference]: Start difference. First operand has 213 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 145 states have internal predecessors, (231), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-15 19:49:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:39,591 INFO L93 Difference]: Finished difference Result 423 states and 790 transitions. [2023-12-15 19:49:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:49:39,593 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 424 [2023-12-15 19:49:39,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:39,599 INFO L225 Difference]: With dead ends: 423 [2023-12-15 19:49:39,599 INFO L226 Difference]: Without dead ends: 211 [2023-12-15 19:49:39,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:49:39,605 INFO L413 NwaCegarLoop]: 351 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, 351 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:39,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:49:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-15 19:49:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2023-12-15 19:49:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 143 states have (on average 1.5524475524475525) internal successors, (222), 143 states have internal predecessors, (222), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-15 19:49:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 354 transitions. [2023-12-15 19:49:39,660 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 354 transitions. Word has length 424 [2023-12-15 19:49:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:39,661 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 354 transitions. [2023-12-15 19:49:39,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-15 19:49:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 354 transitions. [2023-12-15 19:49:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-15 19:49:39,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:39,667 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:39,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:49:39,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:39,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 669057802, now seen corresponding path program 1 times [2023-12-15 19:49:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687024710] [2023-12-15 19:49:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:39,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:39,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600147208] [2023-12-15 19:49:39,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:39,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:39,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:39,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:40,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:49:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:40,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:49:40,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:49:40,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:40,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:40,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687024710] [2023-12-15 19:49:40,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:40,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600147208] [2023-12-15 19:49:40,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600147208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:40,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:40,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:49:40,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603985723] [2023-12-15 19:49:40,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:40,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:49:40,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:40,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:49:40,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:40,283 INFO L87 Difference]: Start difference. First operand 211 states and 354 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:40,387 INFO L93 Difference]: Finished difference Result 564 states and 947 transitions. [2023-12-15 19:49:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:49:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 425 [2023-12-15 19:49:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:40,395 INFO L225 Difference]: With dead ends: 564 [2023-12-15 19:49:40,395 INFO L226 Difference]: Without dead ends: 354 [2023-12-15 19:49:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:40,401 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 229 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:40,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 871 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:49:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-15 19:49:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 351. [2023-12-15 19:49:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 255 states have (on average 1.5686274509803921) internal successors, (400), 256 states have internal predecessors, (400), 93 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-15 19:49:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 586 transitions. [2023-12-15 19:49:40,465 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 586 transitions. Word has length 425 [2023-12-15 19:49:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:40,468 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 586 transitions. [2023-12-15 19:49:40,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:40,468 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 586 transitions. [2023-12-15 19:49:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-15 19:49:40,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:40,473 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:40,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:49:40,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:49:40,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:40,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:40,681 INFO L85 PathProgramCache]: Analyzing trace with hash -133501595, now seen corresponding path program 1 times [2023-12-15 19:49:40,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:40,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793525348] [2023-12-15 19:49:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:40,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:40,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:40,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042001171] [2023-12-15 19:49:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:40,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:40,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:40,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:49:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:40,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:49:40,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:49:41,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:41,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:41,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793525348] [2023-12-15 19:49:41,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:41,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042001171] [2023-12-15 19:49:41,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042001171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:41,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:49:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899530489] [2023-12-15 19:49:41,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:41,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:49:41,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:49:41,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:41,007 INFO L87 Difference]: Start difference. First operand 351 states and 586 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:41,046 INFO L93 Difference]: Finished difference Result 959 states and 1590 transitions. [2023-12-15 19:49:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:49:41,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 426 [2023-12-15 19:49:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:41,053 INFO L225 Difference]: With dead ends: 959 [2023-12-15 19:49:41,054 INFO L226 Difference]: Without dead ends: 609 [2023-12-15 19:49:41,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:41,056 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 241 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:41,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 693 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:49:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-15 19:49:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 606. [2023-12-15 19:49:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 422 states have (on average 1.5236966824644549) internal successors, (643), 425 states have internal predecessors, (643), 179 states have call successors, (179), 4 states have call predecessors, (179), 4 states have return successors, (179), 176 states have call predecessors, (179), 179 states have call successors, (179) [2023-12-15 19:49:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1001 transitions. [2023-12-15 19:49:41,102 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1001 transitions. Word has length 426 [2023-12-15 19:49:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:41,103 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 1001 transitions. [2023-12-15 19:49:41,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1001 transitions. [2023-12-15 19:49:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-15 19:49:41,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:41,107 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:41,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:41,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:41,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:41,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash -267515101, now seen corresponding path program 1 times [2023-12-15 19:49:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:41,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528103214] [2023-12-15 19:49:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:41,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622108229] [2023-12-15 19:49:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:41,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:41,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:41,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:49:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:41,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:49:41,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 1599 proven. 18 refuted. 0 times theorem prover too weak. 6963 trivial. 0 not checked. [2023-12-15 19:49:41,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:49:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 177 proven. 18 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-15 19:49:41,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:41,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528103214] [2023-12-15 19:49:41,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622108229] [2023-12-15 19:49:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622108229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:49:41,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:49:41,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:49:41,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294956100] [2023-12-15 19:49:41,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:49:41,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:49:41,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:49:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:49:41,939 INFO L87 Difference]: Start difference. First operand 606 states and 1001 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-15 19:49:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:42,473 INFO L93 Difference]: Finished difference Result 1063 states and 1750 transitions. [2023-12-15 19:49:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:49:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 426 [2023-12-15 19:49:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:42,478 INFO L225 Difference]: With dead ends: 1063 [2023-12-15 19:49:42,478 INFO L226 Difference]: Without dead ends: 458 [2023-12-15 19:49:42,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 844 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:49:42,481 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 250 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:42,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 950 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:49:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-12-15 19:49:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 451. [2023-12-15 19:49:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 294 states have (on average 1.4795918367346939) internal successors, (435), 296 states have internal predecessors, (435), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 150 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-15 19:49:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 739 transitions. [2023-12-15 19:49:42,506 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 739 transitions. Word has length 426 [2023-12-15 19:49:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:42,507 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 739 transitions. [2023-12-15 19:49:42,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-15 19:49:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 739 transitions. [2023-12-15 19:49:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-15 19:49:42,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:42,511 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:42,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:42,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:42,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:42,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:42,718 INFO L85 PathProgramCache]: Analyzing trace with hash -61115037, now seen corresponding path program 1 times [2023-12-15 19:49:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318026125] [2023-12-15 19:49:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:42,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:42,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184185867] [2023-12-15 19:49:42,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:42,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:42,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:42,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:42,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:49:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:42,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 19:49:42,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 573 proven. 189 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2023-12-15 19:49:43,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:49:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-15 19:49:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318026125] [2023-12-15 19:49:44,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184185867] [2023-12-15 19:49:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184185867] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:49:44,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:49:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-15 19:49:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684061348] [2023-12-15 19:49:44,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:49:44,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:49:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:49:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:49:44,319 INFO L87 Difference]: Start difference. First operand 451 states and 739 transitions. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-15 19:49:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:45,039 INFO L93 Difference]: Finished difference Result 1291 states and 2099 transitions. [2023-12-15 19:49:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:49:45,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) Word has length 426 [2023-12-15 19:49:45,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:45,044 INFO L225 Difference]: With dead ends: 1291 [2023-12-15 19:49:45,044 INFO L226 Difference]: Without dead ends: 937 [2023-12-15 19:49:45,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:49:45,046 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 431 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:45,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1583 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:49:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-15 19:49:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 893. [2023-12-15 19:49:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 631 states have (on average 1.5007923930269413) internal successors, (947), 636 states have internal predecessors, (947), 249 states have call successors, (249), 12 states have call predecessors, (249), 12 states have return successors, (249), 244 states have call predecessors, (249), 249 states have call successors, (249) [2023-12-15 19:49:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1445 transitions. [2023-12-15 19:49:45,104 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1445 transitions. Word has length 426 [2023-12-15 19:49:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:45,105 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1445 transitions. [2023-12-15 19:49:45,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-15 19:49:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1445 transitions. [2023-12-15 19:49:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-15 19:49:45,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:45,107 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:45,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:45,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:45,314 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:45,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash -899731982, now seen corresponding path program 1 times [2023-12-15 19:49:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:45,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420406085] [2023-12-15 19:49:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:45,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804825892] [2023-12-15 19:49:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:45,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:45,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:45,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:49:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:45,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:49:45,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:49:45,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:45,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:45,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420406085] [2023-12-15 19:49:45,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:45,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804825892] [2023-12-15 19:49:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804825892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:45,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:45,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:49:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614526138] [2023-12-15 19:49:45,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:45,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:49:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:49:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:45,602 INFO L87 Difference]: Start difference. First operand 893 states and 1445 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:45,667 INFO L93 Difference]: Finished difference Result 2435 states and 3951 transitions. [2023-12-15 19:49:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:49:45,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 427 [2023-12-15 19:49:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:45,676 INFO L225 Difference]: With dead ends: 2435 [2023-12-15 19:49:45,676 INFO L226 Difference]: Without dead ends: 1643 [2023-12-15 19:49:45,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:45,679 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 335 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:45,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 720 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:49:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2023-12-15 19:49:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 917. [2023-12-15 19:49:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 655 states have (on average 1.4824427480916031) internal successors, (971), 660 states have internal predecessors, (971), 249 states have call successors, (249), 12 states have call predecessors, (249), 12 states have return successors, (249), 244 states have call predecessors, (249), 249 states have call successors, (249) [2023-12-15 19:49:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1469 transitions. [2023-12-15 19:49:45,749 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1469 transitions. Word has length 427 [2023-12-15 19:49:45,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:45,749 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1469 transitions. [2023-12-15 19:49:45,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1469 transitions. [2023-12-15 19:49:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-15 19:49:45,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:45,751 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:45,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:45,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:45,976 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:45,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:45,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1910849232, now seen corresponding path program 1 times [2023-12-15 19:49:45,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:45,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694845342] [2023-12-15 19:49:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:45,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:46,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539794170] [2023-12-15 19:49:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:46,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:46,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:46,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:46,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:49:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:46,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:49:46,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:49:46,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:46,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:46,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694845342] [2023-12-15 19:49:46,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:46,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539794170] [2023-12-15 19:49:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539794170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:46,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:49:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444707119] [2023-12-15 19:49:46,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:46,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:49:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:49:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:46,640 INFO L87 Difference]: Start difference. First operand 917 states and 1469 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:46,710 INFO L93 Difference]: Finished difference Result 2549 states and 4091 transitions. [2023-12-15 19:49:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:49:46,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 427 [2023-12-15 19:49:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:46,716 INFO L225 Difference]: With dead ends: 2549 [2023-12-15 19:49:46,716 INFO L226 Difference]: Without dead ends: 1733 [2023-12-15 19:49:46,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:46,718 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 149 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:46,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 774 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:49:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2023-12-15 19:49:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1731. [2023-12-15 19:49:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1269 states have (on average 1.4948778565799843) internal successors, (1897), 1278 states have internal predecessors, (1897), 439 states have call successors, (439), 22 states have call predecessors, (439), 22 states have return successors, (439), 430 states have call predecessors, (439), 439 states have call successors, (439) [2023-12-15 19:49:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2775 transitions. [2023-12-15 19:49:46,811 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2775 transitions. Word has length 427 [2023-12-15 19:49:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:46,811 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2775 transitions. [2023-12-15 19:49:46,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2775 transitions. [2023-12-15 19:49:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-15 19:49:46,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:46,813 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:46,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 19:49:47,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:47,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:47,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash 997814355, now seen corresponding path program 1 times [2023-12-15 19:49:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:47,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267989585] [2023-12-15 19:49:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:47,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:47,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901472537] [2023-12-15 19:49:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:47,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:47,121 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:47,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:49:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:47,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 19:49:47,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2003 proven. 24 refuted. 0 times theorem prover too weak. 6553 trivial. 0 not checked. [2023-12-15 19:49:47,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:49:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:49:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267989585] [2023-12-15 19:49:48,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901472537] [2023-12-15 19:49:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901472537] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:49:48,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:49:48,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-12-15 19:49:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379824586] [2023-12-15 19:49:48,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:48,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:49:48,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:49:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:49:48,377 INFO L87 Difference]: Start difference. First operand 1731 states and 2775 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 2 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-15 19:49:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:49,188 INFO L93 Difference]: Finished difference Result 7969 states and 12694 transitions. [2023-12-15 19:49:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:49:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 2 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 428 [2023-12-15 19:49:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:49,213 INFO L225 Difference]: With dead ends: 7969 [2023-12-15 19:49:49,213 INFO L226 Difference]: Without dead ends: 6339 [2023-12-15 19:49:49,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-12-15 19:49:49,219 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 2111 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:49,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 2321 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:49:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2023-12-15 19:49:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 3454. [2023-12-15 19:49:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 2583 states have (on average 1.4924506387921022) internal successors, (3855), 2600 states have internal predecessors, (3855), 826 states have call successors, (826), 44 states have call predecessors, (826), 44 states have return successors, (826), 809 states have call predecessors, (826), 826 states have call successors, (826) [2023-12-15 19:49:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5507 transitions. [2023-12-15 19:49:49,650 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5507 transitions. Word has length 428 [2023-12-15 19:49:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:49,651 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 5507 transitions. [2023-12-15 19:49:49,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 2 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-15 19:49:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5507 transitions. [2023-12-15 19:49:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-15 19:49:49,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:49,654 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:49,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:49,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:49:49,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:49,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash -691129387, now seen corresponding path program 1 times [2023-12-15 19:49:49,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:49,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289304874] [2023-12-15 19:49:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:49,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:49,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:49,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024567317] [2023-12-15 19:49:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:49,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:49,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:49,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:49,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:49:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:50,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:49:50,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:49:50,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289304874] [2023-12-15 19:49:50,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024567317] [2023-12-15 19:49:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024567317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:50,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:50,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:49:50,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130001403] [2023-12-15 19:49:50,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:50,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:49:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:49:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:50,291 INFO L87 Difference]: Start difference. First operand 3454 states and 5507 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:50,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:50,540 INFO L93 Difference]: Finished difference Result 9421 states and 15045 transitions. [2023-12-15 19:49:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:49:50,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 428 [2023-12-15 19:49:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:50,563 INFO L225 Difference]: With dead ends: 9421 [2023-12-15 19:49:50,563 INFO L226 Difference]: Without dead ends: 6087 [2023-12-15 19:49:50,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:50,572 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 334 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:50,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 979 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:49:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6087 states. [2023-12-15 19:49:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6087 to 4186. [2023-12-15 19:49:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 3119 states have (on average 1.4232125681308112) internal successors, (4439), 3140 states have internal predecessors, (4439), 1012 states have call successors, (1012), 54 states have call predecessors, (1012), 54 states have return successors, (1012), 991 states have call predecessors, (1012), 1012 states have call successors, (1012) [2023-12-15 19:49:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6463 transitions. [2023-12-15 19:49:50,922 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6463 transitions. Word has length 428 [2023-12-15 19:49:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:50,922 INFO L495 AbstractCegarLoop]: Abstraction has 4186 states and 6463 transitions. [2023-12-15 19:49:50,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:49:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6463 transitions. [2023-12-15 19:49:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-15 19:49:50,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:50,925 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:50,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:51,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:51,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:51,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:51,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1044947718, now seen corresponding path program 1 times [2023-12-15 19:49:51,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:51,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227128807] [2023-12-15 19:49:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:51,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:51,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:51,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867657675] [2023-12-15 19:49:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:51,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:51,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:51,220 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:51,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:49:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:51,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:49:51,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 3849 proven. 63 refuted. 0 times theorem prover too weak. 4668 trivial. 0 not checked. [2023-12-15 19:49:52,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:49:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 132 proven. 63 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-15 19:49:52,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227128807] [2023-12-15 19:49:52,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867657675] [2023-12-15 19:49:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867657675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:49:52,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:49:52,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-15 19:49:52,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614562770] [2023-12-15 19:49:52,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:49:52,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:49:52,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:49:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:49:52,463 INFO L87 Difference]: Start difference. First operand 4186 states and 6463 transitions. Second operand has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-15 19:49:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:53,669 INFO L93 Difference]: Finished difference Result 14236 states and 21931 transitions. [2023-12-15 19:49:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 19:49:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) Word has length 429 [2023-12-15 19:49:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:53,715 INFO L225 Difference]: With dead ends: 14236 [2023-12-15 19:49:53,715 INFO L226 Difference]: Without dead ends: 10170 [2023-12-15 19:49:53,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:49:53,724 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1170 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:53,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 1365 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:49:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10170 states. [2023-12-15 19:49:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10170 to 8286. [2023-12-15 19:49:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8286 states, 6212 states have (on average 1.4224082421120412) internal successors, (8836), 6253 states have internal predecessors, (8836), 1958 states have call successors, (1958), 115 states have call predecessors, (1958), 115 states have return successors, (1958), 1917 states have call predecessors, (1958), 1958 states have call successors, (1958) [2023-12-15 19:49:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8286 states to 8286 states and 12752 transitions. [2023-12-15 19:49:54,575 INFO L78 Accepts]: Start accepts. Automaton has 8286 states and 12752 transitions. Word has length 429 [2023-12-15 19:49:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:54,575 INFO L495 AbstractCegarLoop]: Abstraction has 8286 states and 12752 transitions. [2023-12-15 19:49:54,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-15 19:49:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 8286 states and 12752 transitions. [2023-12-15 19:49:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-15 19:49:54,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:54,580 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:54,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:54,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:49:54,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:54,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1134412660, now seen corresponding path program 1 times [2023-12-15 19:49:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:54,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513519742] [2023-12-15 19:49:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:54,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:54,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533729223] [2023-12-15 19:49:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:54,818 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:54,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:49:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:55,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 19:49:55,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4187 proven. 156 refuted. 0 times theorem prover too weak. 4237 trivial. 0 not checked. [2023-12-15 19:49:55,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:49:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 135 proven. 60 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-15 19:49:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:56,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513519742] [2023-12-15 19:49:56,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:56,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533729223] [2023-12-15 19:49:56,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533729223] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:49:56,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:49:56,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2023-12-15 19:49:56,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950325780] [2023-12-15 19:49:56,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:49:56,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 19:49:56,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 19:49:56,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:49:56,154 INFO L87 Difference]: Start difference. First operand 8286 states and 12752 transitions. Second operand has 17 states, 17 states have (on average 9.882352941176471) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (87), 4 states have call predecessors, (87), 7 states have return successors, (88), 6 states have call predecessors, (88), 6 states have call successors, (88) [2023-12-15 19:49:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:57,557 INFO L93 Difference]: Finished difference Result 16902 states and 25701 transitions. [2023-12-15 19:49:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 19:49:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.882352941176471) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (87), 4 states have call predecessors, (87), 7 states have return successors, (88), 6 states have call predecessors, (88), 6 states have call successors, (88) Word has length 430 [2023-12-15 19:49:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:57,578 INFO L225 Difference]: With dead ends: 16902 [2023-12-15 19:49:57,579 INFO L226 Difference]: Without dead ends: 8740 [2023-12-15 19:49:57,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2023-12-15 19:49:57,594 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 435 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:57,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 1345 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:49:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8740 states. [2023-12-15 19:49:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8740 to 8354. [2023-12-15 19:49:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8354 states, 6316 states have (on average 1.4103863204559848) internal successors, (8908), 6357 states have internal predecessors, (8908), 1870 states have call successors, (1870), 167 states have call predecessors, (1870), 167 states have return successors, (1870), 1829 states have call predecessors, (1870), 1870 states have call successors, (1870) [2023-12-15 19:49:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 12648 transitions. [2023-12-15 19:49:58,180 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 12648 transitions. Word has length 430 [2023-12-15 19:49:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:58,181 INFO L495 AbstractCegarLoop]: Abstraction has 8354 states and 12648 transitions. [2023-12-15 19:49:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.882352941176471) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (87), 4 states have call predecessors, (87), 7 states have return successors, (88), 6 states have call predecessors, (88), 6 states have call successors, (88) [2023-12-15 19:49:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 12648 transitions. [2023-12-15 19:49:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-15 19:49:58,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:58,184 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:58,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:58,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:49:58,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:58,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1986134101, now seen corresponding path program 1 times [2023-12-15 19:49:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:58,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054613548] [2023-12-15 19:49:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:58,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:58,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202368639] [2023-12-15 19:49:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:58,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:58,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:58,445 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:58,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:49:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:58,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-15 19:49:58,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5386 proven. 261 refuted. 0 times theorem prover too weak. 2933 trivial. 0 not checked. [2023-12-15 19:50:00,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:50:00,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:00,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054613548] [2023-12-15 19:50:00,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:00,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202368639] [2023-12-15 19:50:00,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202368639] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:50:00,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:50:00,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21] total 26 [2023-12-15 19:50:00,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955146968] [2023-12-15 19:50:00,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:00,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:50:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:50:00,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-12-15 19:50:00,868 INFO L87 Difference]: Start difference. First operand 8354 states and 12648 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:05,384 INFO L93 Difference]: Finished difference Result 30820 states and 45833 transitions. [2023-12-15 19:50:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 19:50:05,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 431 [2023-12-15 19:50:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:05,445 INFO L225 Difference]: With dead ends: 30820 [2023-12-15 19:50:05,445 INFO L226 Difference]: Without dead ends: 26684 [2023-12-15 19:50:05,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2023-12-15 19:50:05,458 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1652 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:05,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 1504 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:50:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26684 states. [2023-12-15 19:50:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26684 to 17868. [2023-12-15 19:50:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17868 states, 13383 states have (on average 1.363446163042666) internal successors, (18247), 13508 states have internal predecessors, (18247), 4088 states have call successors, (4088), 396 states have call predecessors, (4088), 396 states have return successors, (4088), 3963 states have call predecessors, (4088), 4088 states have call successors, (4088) [2023-12-15 19:50:07,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17868 states to 17868 states and 26423 transitions. [2023-12-15 19:50:07,646 INFO L78 Accepts]: Start accepts. Automaton has 17868 states and 26423 transitions. Word has length 431 [2023-12-15 19:50:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:07,647 INFO L495 AbstractCegarLoop]: Abstraction has 17868 states and 26423 transitions. [2023-12-15 19:50:07,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 17868 states and 26423 transitions. [2023-12-15 19:50:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-15 19:50:07,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:07,651 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:07,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:07,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:50:07,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:07,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1284534227, now seen corresponding path program 1 times [2023-12-15 19:50:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352099730] [2023-12-15 19:50:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:07,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:07,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:07,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974755777] [2023-12-15 19:50:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:07,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:07,901 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:07,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:50:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:08,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:50:08,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:50:09,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:09,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352099730] [2023-12-15 19:50:09,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974755777] [2023-12-15 19:50:09,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974755777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:09,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:09,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:09,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222684624] [2023-12-15 19:50:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:09,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:50:09,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:50:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:50:09,143 INFO L87 Difference]: Start difference. First operand 17868 states and 26423 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:10,056 INFO L93 Difference]: Finished difference Result 28262 states and 41799 transitions. [2023-12-15 19:50:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:50:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 431 [2023-12-15 19:50:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:10,076 INFO L225 Difference]: With dead ends: 28262 [2023-12-15 19:50:10,076 INFO L226 Difference]: Without dead ends: 10538 [2023-12-15 19:50:10,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:50:10,106 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 293 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:10,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1014 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:50:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2023-12-15 19:50:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 9777. [2023-12-15 19:50:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9777 states, 7840 states have (on average 1.3988520408163265) internal successors, (10967), 7892 states have internal predecessors, (10967), 1754 states have call successors, (1754), 182 states have call predecessors, (1754), 182 states have return successors, (1754), 1702 states have call predecessors, (1754), 1754 states have call successors, (1754) [2023-12-15 19:50:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9777 states to 9777 states and 14475 transitions. [2023-12-15 19:50:11,044 INFO L78 Accepts]: Start accepts. Automaton has 9777 states and 14475 transitions. Word has length 431 [2023-12-15 19:50:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:11,046 INFO L495 AbstractCegarLoop]: Abstraction has 9777 states and 14475 transitions. [2023-12-15 19:50:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 9777 states and 14475 transitions. [2023-12-15 19:50:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-15 19:50:11,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:11,049 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:11,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:11,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:50:11,256 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:11,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1591448517, now seen corresponding path program 1 times [2023-12-15 19:50:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025846385] [2023-12-15 19:50:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:11,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:11,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321597918] [2023-12-15 19:50:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:11,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:11,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:11,298 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:11,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:50:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:11,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 19:50:11,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 3549 proven. 630 refuted. 0 times theorem prover too weak. 4401 trivial. 0 not checked. [2023-12-15 19:50:14,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 114 proven. 462 refuted. 0 times theorem prover too weak. 8004 trivial. 0 not checked. [2023-12-15 19:50:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025846385] [2023-12-15 19:50:15,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321597918] [2023-12-15 19:50:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321597918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:15,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 26 [2023-12-15 19:50:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997529726] [2023-12-15 19:50:15,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 19:50:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:15,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 19:50:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2023-12-15 19:50:15,991 INFO L87 Difference]: Start difference. First operand 9777 states and 14475 transitions. Second operand has 26 states, 25 states have (on average 9.2) internal successors, (230), 23 states have internal predecessors, (230), 9 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 9 states have call predecessors, (132), 9 states have call successors, (132) [2023-12-15 19:50:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:22,863 INFO L93 Difference]: Finished difference Result 26671 states and 38677 transitions. [2023-12-15 19:50:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-15 19:50:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 9.2) internal successors, (230), 23 states have internal predecessors, (230), 9 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 9 states have call predecessors, (132), 9 states have call successors, (132) Word has length 432 [2023-12-15 19:50:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:22,931 INFO L225 Difference]: With dead ends: 26671 [2023-12-15 19:50:22,931 INFO L226 Difference]: Without dead ends: 17393 [2023-12-15 19:50:22,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2011, Invalid=5299, Unknown=0, NotChecked=0, Total=7310 [2023-12-15 19:50:22,943 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 2709 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 1457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2713 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 3715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1457 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:22,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2713 Valid, 2952 Invalid, 3715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1457 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 19:50:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2023-12-15 19:50:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 11419. [2023-12-15 19:50:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11419 states, 8651 states have (on average 1.3337186452433245) internal successors, (11538), 8723 states have internal predecessors, (11538), 2400 states have call successors, (2400), 367 states have call predecessors, (2400), 367 states have return successors, (2400), 2328 states have call predecessors, (2400), 2400 states have call successors, (2400) [2023-12-15 19:50:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11419 states to 11419 states and 16338 transitions. [2023-12-15 19:50:24,593 INFO L78 Accepts]: Start accepts. Automaton has 11419 states and 16338 transitions. Word has length 432 [2023-12-15 19:50:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:24,594 INFO L495 AbstractCegarLoop]: Abstraction has 11419 states and 16338 transitions. [2023-12-15 19:50:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 9.2) internal successors, (230), 23 states have internal predecessors, (230), 9 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 9 states have call predecessors, (132), 9 states have call successors, (132) [2023-12-15 19:50:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11419 states and 16338 transitions. [2023-12-15 19:50:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-15 19:50:24,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:24,597 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:24,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 19:50:24,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:24,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:24,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash 995490570, now seen corresponding path program 1 times [2023-12-15 19:50:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:24,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383503796] [2023-12-15 19:50:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:24,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:24,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876521030] [2023-12-15 19:50:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:24,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:24,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:24,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:24,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:50:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:25,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 19:50:25,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4289 proven. 132 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2023-12-15 19:50:25,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:50:25,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:25,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383503796] [2023-12-15 19:50:25,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:25,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876521030] [2023-12-15 19:50:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876521030] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:50:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:50:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-15 19:50:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365537438] [2023-12-15 19:50:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:25,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:50:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:50:25,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:50:25,933 INFO L87 Difference]: Start difference. First operand 11419 states and 16338 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:27,362 INFO L93 Difference]: Finished difference Result 18017 states and 25752 transitions. [2023-12-15 19:50:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:50:27,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 433 [2023-12-15 19:50:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:27,378 INFO L225 Difference]: With dead ends: 18017 [2023-12-15 19:50:27,378 INFO L226 Difference]: Without dead ends: 9405 [2023-12-15 19:50:27,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 851 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:50:27,388 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 341 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:27,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 950 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:50:27,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9405 states. [2023-12-15 19:50:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9405 to 9361. [2023-12-15 19:50:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9361 states, 7077 states have (on average 1.3361593895718524) internal successors, (9456), 7133 states have internal predecessors, (9456), 1978 states have call successors, (1978), 305 states have call predecessors, (1978), 305 states have return successors, (1978), 1922 states have call predecessors, (1978), 1978 states have call successors, (1978) [2023-12-15 19:50:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9361 states to 9361 states and 13412 transitions. [2023-12-15 19:50:28,706 INFO L78 Accepts]: Start accepts. Automaton has 9361 states and 13412 transitions. Word has length 433 [2023-12-15 19:50:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:28,706 INFO L495 AbstractCegarLoop]: Abstraction has 9361 states and 13412 transitions. [2023-12-15 19:50:28,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9361 states and 13412 transitions. [2023-12-15 19:50:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-15 19:50:28,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:28,709 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:28,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:28,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:50:28,916 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:28,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1678988935, now seen corresponding path program 1 times [2023-12-15 19:50:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:28,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197096616] [2023-12-15 19:50:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:28,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:28,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092301347] [2023-12-15 19:50:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:28,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:28,944 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:28,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 19:50:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:29,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:50:29,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-15 19:50:29,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:29,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:29,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197096616] [2023-12-15 19:50:29,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:29,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092301347] [2023-12-15 19:50:29,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092301347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:29,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:29,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:50:29,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332393307] [2023-12-15 19:50:29,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:29,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:29,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:29,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:29,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:29,567 INFO L87 Difference]: Start difference. First operand 9361 states and 13412 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:32,048 INFO L93 Difference]: Finished difference Result 27579 states and 39478 transitions. [2023-12-15 19:50:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:32,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 433 [2023-12-15 19:50:32,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:32,081 INFO L225 Difference]: With dead ends: 27579 [2023-12-15 19:50:32,082 INFO L226 Difference]: Without dead ends: 18440 [2023-12-15 19:50:32,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:32,093 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 143 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:32,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 788 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18440 states. [2023-12-15 19:50:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18440 to 18350. [2023-12-15 19:50:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18350 states, 13862 states have (on average 1.3277304862213244) internal successors, (18405), 13974 states have internal predecessors, (18405), 3890 states have call successors, (3890), 597 states have call predecessors, (3890), 597 states have return successors, (3890), 3778 states have call predecessors, (3890), 3890 states have call successors, (3890) [2023-12-15 19:50:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18350 states to 18350 states and 26185 transitions. [2023-12-15 19:50:34,591 INFO L78 Accepts]: Start accepts. Automaton has 18350 states and 26185 transitions. Word has length 433 [2023-12-15 19:50:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:34,591 INFO L495 AbstractCegarLoop]: Abstraction has 18350 states and 26185 transitions. [2023-12-15 19:50:34,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-15 19:50:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 18350 states and 26185 transitions. [2023-12-15 19:50:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-15 19:50:34,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:34,594 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:34,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-15 19:50:34,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 19:50:34,796 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:34,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash -536399764, now seen corresponding path program 1 times [2023-12-15 19:50:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:34,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756654149] [2023-12-15 19:50:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:34,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:34,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:34,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109416473] [2023-12-15 19:50:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:34,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:34,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:34,933 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) [2023-12-15 19:50:34,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 19:50:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:35,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 19:50:35,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5775 proven. 159 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2023-12-15 19:50:36,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 120 proven. 75 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-15 19:50:37,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:37,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756654149] [2023-12-15 19:50:37,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:37,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109416473] [2023-12-15 19:50:37,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109416473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:37,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:37,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2023-12-15 19:50:37,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998357052] [2023-12-15 19:50:37,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:37,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 19:50:37,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 19:50:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-12-15 19:50:37,170 INFO L87 Difference]: Start difference. First operand 18350 states and 26185 transitions. Second operand has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 5 states have call successors, (107), 4 states have call predecessors, (107), 7 states have return successors, (107), 5 states have call predecessors, (107), 5 states have call successors, (107) Received shutdown request... [2023-12-15 19:50:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 19:50:38,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=507, Invalid=1133, Unknown=0, NotChecked=0, Total=1640 [2023-12-15 19:50:38,807 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1764 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:38,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 1184 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:50:38,808 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:50:38,808 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:50:38,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:38,830 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:50:39,015 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 [2023-12-15 19:50:39,017 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (18350states) and FLOYD_HOARE automaton (currently 25 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (4142 states constructed, input type IntersectNwa). [2023-12-15 19:50:39,020 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:39,023 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:50:39,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:50:39 BoogieIcfgContainer [2023-12-15 19:50:39,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:50:39,025 INFO L158 Benchmark]: Toolchain (without parser) took 61618.18ms. Allocated memory was 250.6MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 206.1MB in the beginning and 972.3MB in the end (delta: -766.2MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 19:50:39,025 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:50:39,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.14ms. Allocated memory is still 250.6MB. Free memory was 205.5MB in the beginning and 181.7MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 19:50:39,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.75ms. Allocated memory is still 250.6MB. Free memory was 181.7MB in the beginning and 170.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 19:50:39,026 INFO L158 Benchmark]: Boogie Preprocessor took 63.08ms. Allocated memory is still 250.6MB. Free memory was 170.7MB in the beginning and 158.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 19:50:39,026 INFO L158 Benchmark]: RCFGBuilder took 805.22ms. Allocated memory is still 250.6MB. Free memory was 158.2MB in the beginning and 177.0MB in the end (delta: -18.8MB). Peak memory consumption was 42.0MB. Max. memory is 8.0GB. [2023-12-15 19:50:39,026 INFO L158 Benchmark]: TraceAbstraction took 60318.69ms. Allocated memory was 250.6MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 176.5MB in the beginning and 972.3MB in the end (delta: -795.8MB). Peak memory consumption was 984.7MB. Max. memory is 8.0GB. [2023-12-15 19:50:39,030 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 362.14ms. Allocated memory is still 250.6MB. Free memory was 205.5MB in the beginning and 181.7MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.75ms. Allocated memory is still 250.6MB. Free memory was 181.7MB in the beginning and 170.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 63.08ms. Allocated memory is still 250.6MB. Free memory was 170.7MB in the beginning and 158.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 805.22ms. Allocated memory is still 250.6MB. Free memory was 158.2MB in the beginning and 177.0MB in the end (delta: -18.8MB). Peak memory consumption was 42.0MB. Max. memory is 8.0GB. * TraceAbstraction took 60318.69ms. Allocated memory was 250.6MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 176.5MB in the beginning and 972.3MB in the end (delta: -795.8MB). Peak memory consumption was 984.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (18350states) and FLOYD_HOARE automaton (currently 25 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (4142 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 213 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.3s, OverallIterations: 17, TraceHistogramMax: 66, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12805 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12587 mSDsluCounter, 20344 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13692 mSDsCounter, 4318 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8423 IncrementalHoareTripleChecker+Invalid, 12741 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4318 mSolverCounterUnsat, 6652 mSDtfsCounter, 8423 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11275 GetRequests, 11020 SyntacticMatches, 1 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3646 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18350occurred in iteration=16, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 23526 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 7714 NumberOfCodeBlocks, 7714 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 11133 ConstructedInterpolants, 5 QuantifiedInterpolants, 52956 SizeOfPredicates, 66 NumberOfNonLiveVariables, 16695 ConjunctsInSsa, 183 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 220581/223080 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