/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:46:15,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:46:15,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:46:15,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:46:15,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:46:15,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:46:15,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:46:15,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:46:15,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:46:15,911 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:46:15,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:46:15,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:46:15,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:46:15,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:46:15,913 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:46:15,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:46:15,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:46:15,914 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:46:15,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:46:15,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:46:15,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:46:15,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:46:15,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:46:15,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:46:15,915 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:46:15,915 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:46:15,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:46:15,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:46:15,916 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:46:15,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:46:15,917 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:46:15,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:46:15,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:46:15,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:46:15,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:46:15,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:46:15,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:46:15,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:46:15,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:46:15,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:46:15,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:46:15,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:46:15,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:46:15,919 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:46:16,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:46:16,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:46:16,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:46:16,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:46:16,138 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:46:16,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i [2023-12-19 07:46:17,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:46:17,586 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:46:17,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i [2023-12-19 07:46:17,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5865c25/59417dc2ff0341b396fac4787b223971/FLAGd110c4737 [2023-12-19 07:46:17,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5865c25/59417dc2ff0341b396fac4787b223971 [2023-12-19 07:46:17,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:46:17,616 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:46:17,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:46:17,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:46:17,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:46:17,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:46:17" (1/1) ... [2023-12-19 07:46:17,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a5f4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:17, skipping insertion in model container [2023-12-19 07:46:17,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:46:17" (1/1) ... [2023-12-19 07:46:17,667 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:46:17,783 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i[916,929] [2023-12-19 07:46:17,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:46:17,979 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:46:18,002 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i[916,929] [2023-12-19 07:46:18,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:46:18,156 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:46:18,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18 WrapperNode [2023-12-19 07:46:18,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:46:18,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:46:18,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:46:18,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:46:18,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,255 INFO L138 Inliner]: procedures = 26, calls = 118, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 973 [2023-12-19 07:46:18,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:46:18,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:46:18,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:46:18,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:46:18,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,333 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:46:18,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:46:18,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:46:18,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:46:18,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:46:18,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (1/1) ... [2023-12-19 07:46:18,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:46:18,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:18,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:46:18,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:46:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:46:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:46:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:46:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:46:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:46:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:46:18,609 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:46:18,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:46:19,674 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:46:19,706 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:46:19,706 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:46:19,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:46:19 BoogieIcfgContainer [2023-12-19 07:46:19,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:46:19,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:46:19,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:46:19,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:46:19,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:46:17" (1/3) ... [2023-12-19 07:46:19,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cce0f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:46:19, skipping insertion in model container [2023-12-19 07:46:19,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:46:18" (2/3) ... [2023-12-19 07:46:19,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cce0f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:46:19, skipping insertion in model container [2023-12-19 07:46:19,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:46:19" (3/3) ... [2023-12-19 07:46:19,712 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-67.i [2023-12-19 07:46:19,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:46:19,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:46:19,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:46:19,760 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;@3cafe43d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:46:19,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:46:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 258 states have (on average 1.686046511627907) internal successors, (435), 259 states have internal predecessors, (435), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-19 07:46:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-19 07:46:19,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:19,799 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:19,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:19,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1434933910, now seen corresponding path program 1 times [2023-12-19 07:46:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:19,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451949529] [2023-12-19 07:46:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:19,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:20,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451949529] [2023-12-19 07:46:20,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:46:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743914547] [2023-12-19 07:46:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:20,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:20,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:20,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:20,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:46:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:20,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:46:20,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 21632 trivial. 0 not checked. [2023-12-19 07:46:20,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743914547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:20,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:20,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:46:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279480152] [2023-12-19 07:46:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:46:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:46:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:46:20,637 INFO L87 Difference]: Start difference. First operand has 366 states, 258 states have (on average 1.686046511627907) internal successors, (435), 259 states have internal predecessors, (435), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (105), 2 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-19 07:46:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:20,690 INFO L93 Difference]: Finished difference Result 729 states and 1393 transitions. [2023-12-19 07:46:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:46:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (105), 2 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 2 states have call successors, (105) Word has length 674 [2023-12-19 07:46:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:20,699 INFO L225 Difference]: With dead ends: 729 [2023-12-19 07:46:20,699 INFO L226 Difference]: Without dead ends: 364 [2023-12-19 07:46:20,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:46:20,706 INFO L413 NwaCegarLoop]: 635 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, 635 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:20,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 635 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-12-19 07:46:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2023-12-19 07:46:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 257 states have (on average 1.6653696498054475) internal successors, (428), 257 states have internal predecessors, (428), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-19 07:46:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 638 transitions. [2023-12-19 07:46:20,757 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 638 transitions. Word has length 674 [2023-12-19 07:46:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:20,758 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 638 transitions. [2023-12-19 07:46:20,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (105), 2 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-19 07:46:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 638 transitions. [2023-12-19 07:46:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-19 07:46:20,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:20,768 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:20,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:20,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 07:46:20,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:20,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1637716758, now seen corresponding path program 1 times [2023-12-19 07:46:20,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:20,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619359653] [2023-12-19 07:46:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:21,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890630909] [2023-12-19 07:46:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:21,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:21,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:21,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:46:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:21,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:21,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:21,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619359653] [2023-12-19 07:46:21,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890630909] [2023-12-19 07:46:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890630909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098427648] [2023-12-19 07:46:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:21,520 INFO L87 Difference]: Start difference. First operand 364 states and 638 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:21,600 INFO L93 Difference]: Finished difference Result 886 states and 1556 transitions. [2023-12-19 07:46:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 675 [2023-12-19 07:46:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:21,610 INFO L225 Difference]: With dead ends: 886 [2023-12-19 07:46:21,610 INFO L226 Difference]: Without dead ends: 523 [2023-12-19 07:46:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:21,616 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 268 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:21,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1308 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-19 07:46:21,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 520. [2023-12-19 07:46:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 388 states have (on average 1.693298969072165) internal successors, (657), 389 states have internal predecessors, (657), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 128 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-19 07:46:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 915 transitions. [2023-12-19 07:46:21,676 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 915 transitions. Word has length 675 [2023-12-19 07:46:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:21,677 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 915 transitions. [2023-12-19 07:46:21,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 915 transitions. [2023-12-19 07:46:21,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-12-19 07:46:21,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:21,692 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:21,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 07:46:21,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:21,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:21,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1560814807, now seen corresponding path program 1 times [2023-12-19 07:46:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:21,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583629626] [2023-12-19 07:46:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:22,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764320996] [2023-12-19 07:46:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:22,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:22,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:22,012 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:22,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:46:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:22,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:22,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:22,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:22,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:22,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583629626] [2023-12-19 07:46:22,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:22,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764320996] [2023-12-19 07:46:22,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764320996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:22,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:22,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:22,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949260518] [2023-12-19 07:46:22,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:22,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:22,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:22,526 INFO L87 Difference]: Start difference. First operand 520 states and 915 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:22,614 INFO L93 Difference]: Finished difference Result 1418 states and 2507 transitions. [2023-12-19 07:46:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 676 [2023-12-19 07:46:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:22,625 INFO L225 Difference]: With dead ends: 1418 [2023-12-19 07:46:22,626 INFO L226 Difference]: Without dead ends: 899 [2023-12-19 07:46:22,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:22,630 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 398 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:22,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1320 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2023-12-19 07:46:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 896. [2023-12-19 07:46:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 708 states have (on average 1.7189265536723164) internal successors, (1217), 711 states have internal predecessors, (1217), 183 states have call successors, (183), 4 states have call predecessors, (183), 4 states have return successors, (183), 180 states have call predecessors, (183), 183 states have call successors, (183) [2023-12-19 07:46:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1583 transitions. [2023-12-19 07:46:22,704 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1583 transitions. Word has length 676 [2023-12-19 07:46:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:22,706 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1583 transitions. [2023-12-19 07:46:22,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1583 transitions. [2023-12-19 07:46:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-19 07:46:22,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:22,719 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:22,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:22,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:22,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:22,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:22,930 INFO L85 PathProgramCache]: Analyzing trace with hash 966601337, now seen corresponding path program 1 times [2023-12-19 07:46:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488161790] [2023-12-19 07:46:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:23,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:23,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269810698] [2023-12-19 07:46:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:23,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:23,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:23,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:46:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:23,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:23,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:23,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:23,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:23,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488161790] [2023-12-19 07:46:23,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:23,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269810698] [2023-12-19 07:46:23,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269810698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:23,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:23,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386523122] [2023-12-19 07:46:23,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:23,396 INFO L87 Difference]: Start difference. First operand 896 states and 1583 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:27,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 07:46:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:27,549 INFO L93 Difference]: Finished difference Result 2524 states and 4469 transitions. [2023-12-19 07:46:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:27,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 677 [2023-12-19 07:46:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:27,555 INFO L225 Difference]: With dead ends: 2524 [2023-12-19 07:46:27,556 INFO L226 Difference]: Without dead ends: 1629 [2023-12-19 07:46:27,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:27,557 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 370 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:27,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1333 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 07:46:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2023-12-19 07:46:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1626. [2023-12-19 07:46:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1320 states have (on average 1.7295454545454545) internal successors, (2283), 1327 states have internal predecessors, (2283), 297 states have call successors, (297), 8 states have call predecessors, (297), 8 states have return successors, (297), 290 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 07:46:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2877 transitions. [2023-12-19 07:46:27,607 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2877 transitions. Word has length 677 [2023-12-19 07:46:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:27,608 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 2877 transitions. [2023-12-19 07:46:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2877 transitions. [2023-12-19 07:46:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-19 07:46:27,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:27,614 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:27,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 07:46:27,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:27,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:27,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:27,822 INFO L85 PathProgramCache]: Analyzing trace with hash 90582331, now seen corresponding path program 1 times [2023-12-19 07:46:27,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:27,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499680345] [2023-12-19 07:46:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:27,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:27,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694129829] [2023-12-19 07:46:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:27,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:27,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:27,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:27,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:46:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:28,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:28,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:28,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:28,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499680345] [2023-12-19 07:46:28,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694129829] [2023-12-19 07:46:28,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694129829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:28,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:28,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683523635] [2023-12-19 07:46:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:28,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:28,265 INFO L87 Difference]: Start difference. First operand 1626 states and 2877 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:28,343 INFO L93 Difference]: Finished difference Result 4511 states and 7945 transitions. [2023-12-19 07:46:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:28,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 677 [2023-12-19 07:46:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:28,355 INFO L225 Difference]: With dead ends: 4511 [2023-12-19 07:46:28,355 INFO L226 Difference]: Without dead ends: 2886 [2023-12-19 07:46:28,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:28,359 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 335 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:28,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1436 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2023-12-19 07:46:28,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2883. [2023-12-19 07:46:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2308 states have (on average 1.6980069324090121) internal successors, (3919), 2323 states have internal predecessors, (3919), 558 states have call successors, (558), 16 states have call predecessors, (558), 16 states have return successors, (558), 543 states have call predecessors, (558), 558 states have call successors, (558) [2023-12-19 07:46:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 5035 transitions. [2023-12-19 07:46:28,503 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 5035 transitions. Word has length 677 [2023-12-19 07:46:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:28,504 INFO L495 AbstractCegarLoop]: Abstraction has 2883 states and 5035 transitions. [2023-12-19 07:46:28,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 5035 transitions. [2023-12-19 07:46:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-19 07:46:28,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:28,512 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:28,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:28,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:28,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:28,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1357216961, now seen corresponding path program 1 times [2023-12-19 07:46:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128367261] [2023-12-19 07:46:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:28,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:28,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667666648] [2023-12-19 07:46:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:28,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:28,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:28,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:28,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:46:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:29,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 1548 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:29,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:29,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:29,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128367261] [2023-12-19 07:46:29,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667666648] [2023-12-19 07:46:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667666648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:29,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:29,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:29,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819799740] [2023-12-19 07:46:29,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:29,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:29,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:29,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:29,227 INFO L87 Difference]: Start difference. First operand 2883 states and 5035 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:29,378 INFO L93 Difference]: Finished difference Result 8255 states and 14364 transitions. [2023-12-19 07:46:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 677 [2023-12-19 07:46:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:29,467 INFO L225 Difference]: With dead ends: 8255 [2023-12-19 07:46:29,467 INFO L226 Difference]: Without dead ends: 5373 [2023-12-19 07:46:29,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:29,473 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 387 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:29,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1504 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2023-12-19 07:46:29,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 5369. [2023-12-19 07:46:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 4268 states have (on average 1.6708059981255858) internal successors, (7131), 4299 states have internal predecessors, (7131), 1068 states have call successors, (1068), 32 states have call predecessors, (1068), 32 states have return successors, (1068), 1037 states have call predecessors, (1068), 1068 states have call successors, (1068) [2023-12-19 07:46:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 9267 transitions. [2023-12-19 07:46:29,867 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 9267 transitions. Word has length 677 [2023-12-19 07:46:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:29,868 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 9267 transitions. [2023-12-19 07:46:29,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 9267 transitions. [2023-12-19 07:46:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-19 07:46:29,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:29,881 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:29,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:30,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:30,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash 3914435, now seen corresponding path program 1 times [2023-12-19 07:46:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061740550] [2023-12-19 07:46:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:30,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:30,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731327676] [2023-12-19 07:46:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:30,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:30,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:30,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:30,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:46:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:30,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:30,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:30,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061740550] [2023-12-19 07:46:30,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:30,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731327676] [2023-12-19 07:46:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731327676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:30,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:30,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:30,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878017134] [2023-12-19 07:46:30,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:30,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:30,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:30,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:30,711 INFO L87 Difference]: Start difference. First operand 5369 states and 9267 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:31,016 INFO L93 Difference]: Finished difference Result 16069 states and 27727 transitions. [2023-12-19 07:46:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:31,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 677 [2023-12-19 07:46:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:31,066 INFO L225 Difference]: With dead ends: 16069 [2023-12-19 07:46:31,066 INFO L226 Difference]: Without dead ends: 10701 [2023-12-19 07:46:31,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:31,086 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 578 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:31,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1248 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:31,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10701 states. [2023-12-19 07:46:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10701 to 10697. [2023-12-19 07:46:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10697 states, 8496 states have (on average 1.6513653483992468) internal successors, (14030), 8558 states have internal predecessors, (14030), 2136 states have call successors, (2136), 64 states have call predecessors, (2136), 64 states have return successors, (2136), 2074 states have call predecessors, (2136), 2136 states have call successors, (2136) [2023-12-19 07:46:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10697 states to 10697 states and 18302 transitions. [2023-12-19 07:46:31,529 INFO L78 Accepts]: Start accepts. Automaton has 10697 states and 18302 transitions. Word has length 677 [2023-12-19 07:46:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:31,529 INFO L495 AbstractCegarLoop]: Abstraction has 10697 states and 18302 transitions. [2023-12-19 07:46:31,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 10697 states and 18302 transitions. [2023-12-19 07:46:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-19 07:46:31,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:31,544 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:31,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 07:46:31,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:31,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:31,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash -963759062, now seen corresponding path program 1 times [2023-12-19 07:46:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960308935] [2023-12-19 07:46:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:31,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:31,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71687143] [2023-12-19 07:46:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:31,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:31,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:31,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:31,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:46:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:32,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:46:32,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 3456 proven. 0 refuted. 0 times theorem prover too weak. 18384 trivial. 0 not checked. [2023-12-19 07:46:32,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:32,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960308935] [2023-12-19 07:46:32,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:32,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71687143] [2023-12-19 07:46:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71687143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:32,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:32,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:46:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655365387] [2023-12-19 07:46:32,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:32,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:46:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:46:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:46:32,411 INFO L87 Difference]: Start difference. First operand 10697 states and 18302 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-19 07:46:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:33,123 INFO L93 Difference]: Finished difference Result 21411 states and 36620 transitions. [2023-12-19 07:46:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:46:33,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 678 [2023-12-19 07:46:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:33,173 INFO L225 Difference]: With dead ends: 21411 [2023-12-19 07:46:33,173 INFO L226 Difference]: Without dead ends: 10715 [2023-12-19 07:46:33,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:46:33,199 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 948 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:33,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1098 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:46:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10715 states. [2023-12-19 07:46:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10715 to 10697. [2023-12-19 07:46:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10697 states, 8496 states have (on average 1.649482109227872) internal successors, (14014), 8558 states have internal predecessors, (14014), 2136 states have call successors, (2136), 64 states have call predecessors, (2136), 64 states have return successors, (2136), 2074 states have call predecessors, (2136), 2136 states have call successors, (2136) [2023-12-19 07:46:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10697 states to 10697 states and 18286 transitions. [2023-12-19 07:46:33,813 INFO L78 Accepts]: Start accepts. Automaton has 10697 states and 18286 transitions. Word has length 678 [2023-12-19 07:46:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:33,814 INFO L495 AbstractCegarLoop]: Abstraction has 10697 states and 18286 transitions. [2023-12-19 07:46:33,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-19 07:46:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 10697 states and 18286 transitions. [2023-12-19 07:46:33,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-19 07:46:33,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:33,835 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:33,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:34,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 07:46:34,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:34,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1807764564, now seen corresponding path program 1 times [2023-12-19 07:46:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878189083] [2023-12-19 07:46:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:34,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:34,118 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:34,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50005624] [2023-12-19 07:46:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:34,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:34,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:34,120 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:34,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:46:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:34,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:34,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:34,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878189083] [2023-12-19 07:46:34,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50005624] [2023-12-19 07:46:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50005624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:34,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:34,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:34,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910279443] [2023-12-19 07:46:34,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:34,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:34,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:34,672 INFO L87 Difference]: Start difference. First operand 10697 states and 18286 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:35,382 INFO L93 Difference]: Finished difference Result 32089 states and 54856 transitions. [2023-12-19 07:46:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:35,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 678 [2023-12-19 07:46:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:35,450 INFO L225 Difference]: With dead ends: 32089 [2023-12-19 07:46:35,451 INFO L226 Difference]: Without dead ends: 21393 [2023-12-19 07:46:35,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:35,486 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 625 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:35,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1810 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21393 states. [2023-12-19 07:46:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21393 to 21391. [2023-12-19 07:46:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21391 states, 16990 states have (on average 1.6269570335491466) internal successors, (27642), 17114 states have internal predecessors, (27642), 4272 states have call successors, (4272), 128 states have call predecessors, (4272), 128 states have return successors, (4272), 4148 states have call predecessors, (4272), 4272 states have call successors, (4272) [2023-12-19 07:46:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21391 states to 21391 states and 36186 transitions. [2023-12-19 07:46:36,606 INFO L78 Accepts]: Start accepts. Automaton has 21391 states and 36186 transitions. Word has length 678 [2023-12-19 07:46:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:36,607 INFO L495 AbstractCegarLoop]: Abstraction has 21391 states and 36186 transitions. [2023-12-19 07:46:36,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 21391 states and 36186 transitions. [2023-12-19 07:46:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-19 07:46:36,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:36,628 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:36,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:36,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:36,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:36,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:36,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2326230, now seen corresponding path program 1 times [2023-12-19 07:46:36,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:36,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818797544] [2023-12-19 07:46:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:36,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:36,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180035354] [2023-12-19 07:46:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:36,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:36,885 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:36,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:46:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:37,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:46:37,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:39,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:39,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818797544] [2023-12-19 07:46:39,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180035354] [2023-12-19 07:46:39,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180035354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:39,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:39,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:46:39,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721585549] [2023-12-19 07:46:39,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:39,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:46:39,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:39,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:46:39,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:46:39,274 INFO L87 Difference]: Start difference. First operand 21391 states and 36186 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:40,430 INFO L93 Difference]: Finished difference Result 59382 states and 100679 transitions. [2023-12-19 07:46:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:46:40,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 678 [2023-12-19 07:46:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:40,544 INFO L225 Difference]: With dead ends: 59382 [2023-12-19 07:46:40,544 INFO L226 Difference]: Without dead ends: 37992 [2023-12-19 07:46:40,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:46:40,594 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1264 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:40,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 2189 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:46:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37992 states. [2023-12-19 07:46:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37992 to 30208. [2023-12-19 07:46:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30208 states, 25701 states have (on average 1.6542157892689) internal successors, (42515), 25825 states have internal predecessors, (42515), 4377 states have call successors, (4377), 129 states have call predecessors, (4377), 129 states have return successors, (4377), 4253 states have call predecessors, (4377), 4377 states have call successors, (4377) [2023-12-19 07:46:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30208 states to 30208 states and 51269 transitions. [2023-12-19 07:46:42,528 INFO L78 Accepts]: Start accepts. Automaton has 30208 states and 51269 transitions. Word has length 678 [2023-12-19 07:46:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:42,529 INFO L495 AbstractCegarLoop]: Abstraction has 30208 states and 51269 transitions. [2023-12-19 07:46:42,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 30208 states and 51269 transitions. [2023-12-19 07:46:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-12-19 07:46:42,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:42,547 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:42,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:42,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:46:42,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:42,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -818615040, now seen corresponding path program 1 times [2023-12-19 07:46:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:42,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579741464] [2023-12-19 07:46:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:42,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:42,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515933148] [2023-12-19 07:46:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:42,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:42,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:42,820 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:42,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:46:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:43,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:46:43,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 10562 proven. 123 refuted. 0 times theorem prover too weak. 11155 trivial. 0 not checked. [2023-12-19 07:46:43,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:46:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 189 proven. 123 refuted. 0 times theorem prover too weak. 21528 trivial. 0 not checked. [2023-12-19 07:46:43,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579741464] [2023-12-19 07:46:43,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515933148] [2023-12-19 07:46:43,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515933148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:46:43,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:46:43,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:46:43,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647161192] [2023-12-19 07:46:43,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:46:44,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:46:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:46:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:46:44,101 INFO L87 Difference]: Start difference. First operand 30208 states and 51269 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-19 07:46:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:45,038 INFO L93 Difference]: Finished difference Result 41852 states and 71099 transitions. [2023-12-19 07:46:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:46:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 680 [2023-12-19 07:46:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:45,074 INFO L225 Difference]: With dead ends: 41852 [2023-12-19 07:46:45,074 INFO L226 Difference]: Without dead ends: 16450 [2023-12-19 07:46:45,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1352 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:46:45,113 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 421 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:45,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1333 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:46:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16450 states. [2023-12-19 07:46:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16450 to 16320. [2023-12-19 07:46:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16320 states, 13908 states have (on average 1.6472533793500144) internal successors, (22910), 13968 states have internal predecessors, (22910), 2337 states have call successors, (2337), 74 states have call predecessors, (2337), 74 states have return successors, (2337), 2277 states have call predecessors, (2337), 2337 states have call successors, (2337) [2023-12-19 07:46:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16320 states to 16320 states and 27584 transitions. [2023-12-19 07:46:45,905 INFO L78 Accepts]: Start accepts. Automaton has 16320 states and 27584 transitions. Word has length 680 [2023-12-19 07:46:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:45,906 INFO L495 AbstractCegarLoop]: Abstraction has 16320 states and 27584 transitions. [2023-12-19 07:46:45,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-19 07:46:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 16320 states and 27584 transitions. [2023-12-19 07:46:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-12-19 07:46:45,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:45,920 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:45,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:46,129 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 [2023-12-19 07:46:46,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:46,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1973175864, now seen corresponding path program 1 times [2023-12-19 07:46:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032823243] [2023-12-19 07:46:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:46,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:46,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:46,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560609752] [2023-12-19 07:46:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:46,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:46,187 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) [2023-12-19 07:46:46,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:46:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:46,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1556 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:46,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:46,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032823243] [2023-12-19 07:46:46,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560609752] [2023-12-19 07:46:46,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560609752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:46,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:46,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958106202] [2023-12-19 07:46:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:46,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:46,692 INFO L87 Difference]: Start difference. First operand 16320 states and 27584 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:47,433 INFO L93 Difference]: Finished difference Result 42544 states and 71106 transitions. [2023-12-19 07:46:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:47,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 681 [2023-12-19 07:46:47,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:47,495 INFO L225 Difference]: With dead ends: 42544 [2023-12-19 07:46:47,495 INFO L226 Difference]: Without dead ends: 28058 [2023-12-19 07:46:47,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:47,520 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 298 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:47,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1421 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:46:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28058 states. [2023-12-19 07:46:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28058 to 28048. [2023-12-19 07:46:48,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28048 states, 23492 states have (on average 1.6031840626596288) internal successors, (37662), 23616 states have internal predecessors, (37662), 4409 states have call successors, (4409), 146 states have call predecessors, (4409), 146 states have return successors, (4409), 4285 states have call predecessors, (4409), 4409 states have call successors, (4409) [2023-12-19 07:46:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28048 states to 28048 states and 46480 transitions. [2023-12-19 07:46:48,680 INFO L78 Accepts]: Start accepts. Automaton has 28048 states and 46480 transitions. Word has length 681 [2023-12-19 07:46:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:48,682 INFO L495 AbstractCegarLoop]: Abstraction has 28048 states and 46480 transitions. [2023-12-19 07:46:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 28048 states and 46480 transitions. [2023-12-19 07:46:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-12-19 07:46:48,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:48,710 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:48,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:48,919 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 [2023-12-19 07:46:48,920 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:48,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1698416250, now seen corresponding path program 1 times [2023-12-19 07:46:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:48,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982529100] [2023-12-19 07:46:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:48,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:48,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:48,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221427029] [2023-12-19 07:46:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:48,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:48,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:48,977 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) [2023-12-19 07:46:49,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:46:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:49,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:46:49,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 10154 proven. 111 refuted. 0 times theorem prover too weak. 11575 trivial. 0 not checked. [2023-12-19 07:46:49,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:46:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 201 proven. 111 refuted. 0 times theorem prover too weak. 21528 trivial. 0 not checked. [2023-12-19 07:46:49,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982529100] [2023-12-19 07:46:49,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221427029] [2023-12-19 07:46:49,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221427029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:46:49,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:46:49,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:46:49,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325167644] [2023-12-19 07:46:49,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:46:49,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:46:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:46:49,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:46:49,986 INFO L87 Difference]: Start difference. First operand 28048 states and 46480 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-12-19 07:46:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:50,980 INFO L93 Difference]: Finished difference Result 39724 states and 66054 transitions. [2023-12-19 07:46:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:46:50,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 681 [2023-12-19 07:46:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:51,018 INFO L225 Difference]: With dead ends: 39724 [2023-12-19 07:46:51,018 INFO L226 Difference]: Without dead ends: 16486 [2023-12-19 07:46:51,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1354 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:46:51,052 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 774 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:51,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1328 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:46:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16486 states. [2023-12-19 07:46:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16486 to 16356. [2023-12-19 07:46:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16356 states, 13935 states have (on average 1.6207391460351632) internal successors, (22585), 13995 states have internal predecessors, (22585), 2337 states have call successors, (2337), 83 states have call predecessors, (2337), 83 states have return successors, (2337), 2277 states have call predecessors, (2337), 2337 states have call successors, (2337) [2023-12-19 07:46:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16356 states to 16356 states and 27259 transitions. [2023-12-19 07:46:51,784 INFO L78 Accepts]: Start accepts. Automaton has 16356 states and 27259 transitions. Word has length 681 [2023-12-19 07:46:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:51,785 INFO L495 AbstractCegarLoop]: Abstraction has 16356 states and 27259 transitions. [2023-12-19 07:46:51,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-12-19 07:46:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16356 states and 27259 transitions. [2023-12-19 07:46:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-12-19 07:46:51,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:51,796 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:51,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:52,005 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 [2023-12-19 07:46:52,005 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:52,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1492095606, now seen corresponding path program 1 times [2023-12-19 07:46:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984797372] [2023-12-19 07:46:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:52,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:52,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300907462] [2023-12-19 07:46:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:52,054 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) [2023-12-19 07:46:52,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:46:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:52,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:46:52,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 9902 proven. 105 refuted. 0 times theorem prover too weak. 11833 trivial. 0 not checked. [2023-12-19 07:46:52,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:46:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 207 proven. 105 refuted. 0 times theorem prover too weak. 21528 trivial. 0 not checked. [2023-12-19 07:46:53,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:53,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984797372] [2023-12-19 07:46:53,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:53,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300907462] [2023-12-19 07:46:53,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300907462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:46:53,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:46:53,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:46:53,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65837438] [2023-12-19 07:46:53,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:46:53,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:46:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:46:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:46:53,085 INFO L87 Difference]: Start difference. First operand 16356 states and 27259 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-19 07:46:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:53,836 INFO L93 Difference]: Finished difference Result 22940 states and 38373 transitions. [2023-12-19 07:46:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:46:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 681 [2023-12-19 07:46:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:53,856 INFO L225 Difference]: With dead ends: 22940 [2023-12-19 07:46:53,856 INFO L226 Difference]: Without dead ends: 9382 [2023-12-19 07:46:53,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1354 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:46:53,876 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 794 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:53,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1313 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:46:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9382 states. [2023-12-19 07:46:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9382 to 9316. [2023-12-19 07:46:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9316 states, 7974 states have (on average 1.6242789064459493) internal successors, (12952), 8002 states have internal predecessors, (12952), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1265 states have call predecessors, (1293), 1293 states have call successors, (1293) [2023-12-19 07:46:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 15538 transitions. [2023-12-19 07:46:54,179 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 15538 transitions. Word has length 681 [2023-12-19 07:46:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:54,180 INFO L495 AbstractCegarLoop]: Abstraction has 9316 states and 15538 transitions. [2023-12-19 07:46:54,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-19 07:46:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 15538 transitions. [2023-12-19 07:46:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-19 07:46:54,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:54,188 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:54,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:54,396 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 [2023-12-19 07:46:54,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:54,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash 253764123, now seen corresponding path program 1 times [2023-12-19 07:46:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:54,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322202519] [2023-12-19 07:46:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:54,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:54,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:54,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067184150] [2023-12-19 07:46:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:54,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:54,532 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) [2023-12-19 07:46:54,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:46:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:55,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 1556 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:46:55,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:55,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:55,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322202519] [2023-12-19 07:46:55,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:55,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067184150] [2023-12-19 07:46:55,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067184150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:55,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:55,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:46:55,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21074482] [2023-12-19 07:46:55,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:55,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:46:55,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:46:55,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:55,332 INFO L87 Difference]: Start difference. First operand 9316 states and 15538 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:46:55,711 INFO L93 Difference]: Finished difference Result 21554 states and 36101 transitions. [2023-12-19 07:46:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:46:55,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 682 [2023-12-19 07:46:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:46:55,739 INFO L225 Difference]: With dead ends: 21554 [2023-12-19 07:46:55,739 INFO L226 Difference]: Without dead ends: 14176 [2023-12-19 07:46:55,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:46:55,757 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 393 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:46:55,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1492 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:46:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14176 states. [2023-12-19 07:46:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14176 to 11374. [2023-12-19 07:46:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11374 states, 10031 states have (on average 1.6693250922141363) internal successors, (16745), 10059 states have internal predecessors, (16745), 1293 states have call successors, (1293), 49 states have call predecessors, (1293), 49 states have return successors, (1293), 1265 states have call predecessors, (1293), 1293 states have call successors, (1293) [2023-12-19 07:46:56,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11374 states to 11374 states and 19331 transitions. [2023-12-19 07:46:56,288 INFO L78 Accepts]: Start accepts. Automaton has 11374 states and 19331 transitions. Word has length 682 [2023-12-19 07:46:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:56,289 INFO L495 AbstractCegarLoop]: Abstraction has 11374 states and 19331 transitions. [2023-12-19 07:46:56,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:46:56,289 INFO L276 IsEmpty]: Start isEmpty. Operand 11374 states and 19331 transitions. [2023-12-19 07:46:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-19 07:46:56,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:56,296 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:56,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:56,505 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 [2023-12-19 07:46:56,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:56,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash -478203303, now seen corresponding path program 1 times [2023-12-19 07:46:56,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937310997] [2023-12-19 07:46:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:56,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:56,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31339166] [2023-12-19 07:46:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:56,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:56,599 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) [2023-12-19 07:46:56,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:46:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:57,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:46:57,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:46:58,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:46:58,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:58,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937310997] [2023-12-19 07:46:58,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:58,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31339166] [2023-12-19 07:46:58,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31339166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:46:58,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:46:58,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 07:46:58,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143305090] [2023-12-19 07:46:58,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:58,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:46:58,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:46:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:46:58,067 INFO L87 Difference]: Start difference. First operand 11374 states and 19331 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:47:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:47:00,191 INFO L93 Difference]: Finished difference Result 55684 states and 94127 transitions. [2023-12-19 07:47:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 07:47:00,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 682 [2023-12-19 07:47:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:47:00,269 INFO L225 Difference]: With dead ends: 55684 [2023-12-19 07:47:00,269 INFO L226 Difference]: Without dead ends: 45796 [2023-12-19 07:47:00,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-19 07:47:00,294 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 2636 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 1135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 5286 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:47:00,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2636 Valid, 5286 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1135 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 07:47:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45796 states. [2023-12-19 07:47:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45796 to 41034. [2023-12-19 07:47:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41034 states, 35979 states have (on average 1.650657327885711) internal successors, (59389), 36091 states have internal predecessors, (59389), 4857 states have call successors, (4857), 197 states have call predecessors, (4857), 197 states have return successors, (4857), 4745 states have call predecessors, (4857), 4857 states have call successors, (4857) [2023-12-19 07:47:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41034 states to 41034 states and 69103 transitions. [2023-12-19 07:47:01,947 INFO L78 Accepts]: Start accepts. Automaton has 41034 states and 69103 transitions. Word has length 682 [2023-12-19 07:47:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:47:01,947 INFO L495 AbstractCegarLoop]: Abstraction has 41034 states and 69103 transitions. [2023-12-19 07:47:01,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:47:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 41034 states and 69103 transitions. [2023-12-19 07:47:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-19 07:47:01,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:47:01,961 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:47:01,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 07:47:02,168 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 [2023-12-19 07:47:02,169 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:47:02,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:47:02,170 INFO L85 PathProgramCache]: Analyzing trace with hash -987676393, now seen corresponding path program 1 times [2023-12-19 07:47:02,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:47:02,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698046837] [2023-12-19 07:47:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:47:02,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:47:02,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:47:02,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042281492] [2023-12-19 07:47:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:47:02,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:47:02,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:47:02,265 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) [2023-12-19 07:47:02,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:47:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:47:02,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:47:02,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:47:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:47:02,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:47:02,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:47:02,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698046837] [2023-12-19 07:47:02,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:47:02,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042281492] [2023-12-19 07:47:02,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042281492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:47:02,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:47:02,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:47:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541074321] [2023-12-19 07:47:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:47:02,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:47:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:47:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:47:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:47:02,799 INFO L87 Difference]: Start difference. First operand 41034 states and 69103 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:47:06,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 07:47:10,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 07:47:14,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 07:47:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:47:16,180 INFO L93 Difference]: Finished difference Result 76382 states and 128603 transitions. [2023-12-19 07:47:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:47:16,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 682 [2023-12-19 07:47:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:47:16,267 INFO L225 Difference]: With dead ends: 76382 [2023-12-19 07:47:16,267 INFO L226 Difference]: Without dead ends: 41316 [2023-12-19 07:47:16,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:47:16,323 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 357 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:47:16,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 2706 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2023-12-19 07:47:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41316 states. [2023-12-19 07:47:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41316 to 41166. [2023-12-19 07:47:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41166 states, 36111 states have (on average 1.644623521918529) internal successors, (59389), 36223 states have internal predecessors, (59389), 4857 states have call successors, (4857), 197 states have call predecessors, (4857), 197 states have return successors, (4857), 4745 states have call predecessors, (4857), 4857 states have call successors, (4857) [2023-12-19 07:47:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41166 states to 41166 states and 69103 transitions. [2023-12-19 07:47:18,069 INFO L78 Accepts]: Start accepts. Automaton has 41166 states and 69103 transitions. Word has length 682 [2023-12-19 07:47:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:47:18,070 INFO L495 AbstractCegarLoop]: Abstraction has 41166 states and 69103 transitions. [2023-12-19 07:47:18,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:47:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 41166 states and 69103 transitions. [2023-12-19 07:47:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-19 07:47:18,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:47:18,088 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:47:18,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:47:18,298 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 [2023-12-19 07:47:18,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:47:18,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:47:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash 399109017, now seen corresponding path program 1 times [2023-12-19 07:47:18,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:47:18,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552518123] [2023-12-19 07:47:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:47:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:47:18,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:47:18,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666527807] [2023-12-19 07:47:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:47:18,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:47:18,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:47:18,372 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:47:18,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:47:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:47:18,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:47:18,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:47:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2023-12-19 07:47:19,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:47:19,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:47:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552518123] [2023-12-19 07:47:19,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:47:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666527807] [2023-12-19 07:47:19,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666527807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:47:19,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:47:19,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:47:19,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164216411] [2023-12-19 07:47:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:47:19,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:47:19,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:47:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:47:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:47:19,487 INFO L87 Difference]: Start difference. First operand 41166 states and 69103 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:47:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:47:23,788 INFO L93 Difference]: Finished difference Result 182098 states and 305378 transitions. [2023-12-19 07:47:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:47:23,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 682 [2023-12-19 07:47:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:47:24,087 INFO L225 Difference]: With dead ends: 182098 [2023-12-19 07:47:24,087 INFO L226 Difference]: Without dead ends: 141342 [2023-12-19 07:47:24,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:47:24,152 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 3415 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3415 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:47:24,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3415 Valid, 4389 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:47:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141342 states. [2023-12-19 07:47:29,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141342 to 128224. [2023-12-19 07:47:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128224 states, 110352 states have (on average 1.62050529215601) internal successors, (178826), 110832 states have internal predecessors, (178826), 17225 states have call successors, (17225), 646 states have call predecessors, (17225), 646 states have return successors, (17225), 16745 states have call predecessors, (17225), 17225 states have call successors, (17225) [2023-12-19 07:47:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128224 states to 128224 states and 213276 transitions. [2023-12-19 07:47:30,622 INFO L78 Accepts]: Start accepts. Automaton has 128224 states and 213276 transitions. Word has length 682 [2023-12-19 07:47:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:47:30,623 INFO L495 AbstractCegarLoop]: Abstraction has 128224 states and 213276 transitions. [2023-12-19 07:47:30,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2023-12-19 07:47:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 128224 states and 213276 transitions. [2023-12-19 07:47:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-19 07:47:30,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:47:30,696 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:47:30,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:47:30,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:47:30,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:47:30,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:47:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1890925493, now seen corresponding path program 1 times [2023-12-19 07:47:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:47:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917837061] [2023-12-19 07:47:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:47:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:47:30,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:47:30,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614026983] [2023-12-19 07:47:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:47:30,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:47:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:47:30,982 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:47:30,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:47:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:47:31,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 07:47:31,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:47:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 10070 proven. 108 refuted. 0 times theorem prover too weak. 11662 trivial. 0 not checked. [2023-12-19 07:47:32,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:47:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 510 proven. 111 refuted. 0 times theorem prover too weak. 21219 trivial. 0 not checked. [2023-12-19 07:47:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:47:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917837061] [2023-12-19 07:47:32,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:47:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614026983] [2023-12-19 07:47:32,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614026983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:47:32,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:47:32,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-19 07:47:32,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330397800] [2023-12-19 07:47:32,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:47:32,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 07:47:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:47:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 07:47:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:47:32,740 INFO L87 Difference]: Start difference. First operand 128224 states and 213276 transitions. Second operand has 18 states, 18 states have (on average 15.166666666666666) internal successors, (273), 18 states have internal predecessors, (273), 5 states have call successors, (137), 3 states have call predecessors, (137), 7 states have return successors, (138), 5 states have call predecessors, (138), 5 states have call successors, (138) [2023-12-19 07:48:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:48:06,060 INFO L93 Difference]: Finished difference Result 673438 states and 1098243 transitions. [2023-12-19 07:48:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 07:48:06,061 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.166666666666666) internal successors, (273), 18 states have internal predecessors, (273), 5 states have call successors, (137), 3 states have call predecessors, (137), 7 states have return successors, (138), 5 states have call predecessors, (138), 5 states have call successors, (138) Word has length 682 [2023-12-19 07:48:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:48:08,086 INFO L225 Difference]: With dead ends: 673438 [2023-12-19 07:48:08,087 INFO L226 Difference]: Without dead ends: 561708 [2023-12-19 07:48:08,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 1351 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=696, Invalid=1656, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 07:48:08,394 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 3325 mSDsluCounter, 3458 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 1627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 4139 SdHoareTripleChecker+Invalid, 4188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1627 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:48:08,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3443 Valid, 4139 Invalid, 4188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1627 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 07:48:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561708 states. [2023-12-19 07:48:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561708 to 364276. [2023-12-19 07:48:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364276 states, 317648 states have (on average 1.5973845262680704) internal successors, (507406), 319024 states have internal predecessors, (507406), 44937 states have call successors, (44937), 1690 states have call predecessors, (44937), 1690 states have return successors, (44937), 43561 states have call predecessors, (44937), 44937 states have call successors, (44937) [2023-12-19 07:48:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364276 states to 364276 states and 597280 transitions. [2023-12-19 07:48:34,489 INFO L78 Accepts]: Start accepts. Automaton has 364276 states and 597280 transitions. Word has length 682 [2023-12-19 07:48:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:48:34,490 INFO L495 AbstractCegarLoop]: Abstraction has 364276 states and 597280 transitions. [2023-12-19 07:48:34,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.166666666666666) internal successors, (273), 18 states have internal predecessors, (273), 5 states have call successors, (137), 3 states have call predecessors, (137), 7 states have return successors, (138), 5 states have call predecessors, (138), 5 states have call successors, (138) [2023-12-19 07:48:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 364276 states and 597280 transitions. [2023-12-19 07:48:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-19 07:48:34,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:48:34,579 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:48:34,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 07:48:34,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:48:34,788 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:48:34,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:48:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1346203725, now seen corresponding path program 1 times [2023-12-19 07:48:34,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:48:34,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436588767] [2023-12-19 07:48:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:48:34,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:48:34,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:48:34,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569423395] [2023-12-19 07:48:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:48:34,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:48:34,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:48:34,839 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:48:34,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 07:48:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:48:35,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 1556 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:48:35,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:48:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 9464 proven. 96 refuted. 0 times theorem prover too weak. 12280 trivial. 0 not checked. [2023-12-19 07:48:36,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:48:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 216 proven. 96 refuted. 0 times theorem prover too weak. 21528 trivial. 0 not checked. [2023-12-19 07:48:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:48:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436588767] [2023-12-19 07:48:37,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:48:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569423395] [2023-12-19 07:48:37,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569423395] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:48:37,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:48:37,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-12-19 07:48:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125570839] [2023-12-19 07:48:37,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:48:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 07:48:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:48:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 07:48:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:48:37,009 INFO L87 Difference]: Start difference. First operand 364276 states and 597280 transitions. Second operand has 9 states, 9 states have (on average 27.88888888888889) internal successors, (251), 9 states have internal predecessors, (251), 3 states have call successors, (210), 3 states have call predecessors, (210), 5 states have return successors, (210), 3 states have call predecessors, (210), 3 states have call successors, (210)