/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:03:34,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:03:34,477 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 07:03:34,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:03:34,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:03:34,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:03:34,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:03:34,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:03:34,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:03:34,500 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:03:34,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:03:34,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:03:34,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:03:34,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:03:34,501 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:03:34,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:03:34,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:03:34,502 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:03:34,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:03:34,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:03:34,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:03:34,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:03:34,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:03:34,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:03:34,503 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:03:34,504 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:03:34,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:03:34,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:03:34,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:03:34,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:03:34,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:03:34,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:03:34,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:03:34,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:03:34,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:03:34,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:03:34,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:03:34,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:03:34,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:03:34,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:03:34,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:03:34,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:03:34,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:03:34,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:03:34,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:03:34,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:03:34,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:03:34,724 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:03:34,725 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:03:34,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i [2023-12-19 07:03:35,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:03:35,986 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:03:35,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i [2023-12-19 07:03:35,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2832e4b75/d3fe8988a7524630800b714fe3803c8f/FLAGdbdbf34ff [2023-12-19 07:03:36,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2832e4b75/d3fe8988a7524630800b714fe3803c8f [2023-12-19 07:03:36,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:03:36,006 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:03:36,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:03:36,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:03:36,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:03:36,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fdf857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36, skipping insertion in model container [2023-12-19 07:03:36,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,087 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:03:36,247 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i[916,929] [2023-12-19 07:03:36,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:03:36,450 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:03:36,458 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i[916,929] [2023-12-19 07:03:36,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:03:36,535 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:03:36,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36 WrapperNode [2023-12-19 07:03:36,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:03:36,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:03:36,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:03:36,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:03:36,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,624 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 513 [2023-12-19 07:03:36,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:03:36,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:03:36,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:03:36,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:03:36,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,671 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 07:03:36,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:03:36,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:03:36,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:03:36,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:03:36,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (1/1) ... [2023-12-19 07:03:36,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:03:36,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:36,776 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 07:03:36,809 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 07:03:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:03:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:03:36,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:03:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:03:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:03:36,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:03:36,920 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:03:36,922 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:03:37,571 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:03:37,626 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:03:37,627 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:03:37,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:03:37 BoogieIcfgContainer [2023-12-19 07:03:37,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:03:37,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:03:37,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:03:37,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:03:37,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:03:36" (1/3) ... [2023-12-19 07:03:37,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f41d311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:03:37, skipping insertion in model container [2023-12-19 07:03:37,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:36" (2/3) ... [2023-12-19 07:03:37,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f41d311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:03:37, skipping insertion in model container [2023-12-19 07:03:37,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:03:37" (3/3) ... [2023-12-19 07:03:37,634 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-72.i [2023-12-19 07:03:37,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:03:37,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:03:37,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:03:37,693 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;@214c4076, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:03:37,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:03:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 127 states have (on average 1.6299212598425197) internal successors, (207), 128 states have internal predecessors, (207), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-19 07:03:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-19 07:03:37,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:37,721 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:37,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:37,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2047268831, now seen corresponding path program 1 times [2023-12-19 07:03:37,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:37,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383113515] [2023-12-19 07:03:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:37,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383113515] [2023-12-19 07:03:38,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:03:38,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764599111] [2023-12-19 07:03:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:38,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:38,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:38,003 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 07:03:38,036 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 07:03:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:38,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:03:38,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2023-12-19 07:03:38,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:38,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764599111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:38,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:38,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:03:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136956184] [2023-12-19 07:03:38,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:03:38,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:03:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:03:38,370 INFO L87 Difference]: Start difference. First operand has 197 states, 127 states have (on average 1.6299212598425197) internal successors, (207), 128 states have internal predecessors, (207), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-19 07:03:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:38,430 INFO L93 Difference]: Finished difference Result 391 states and 747 transitions. [2023-12-19 07:03:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:03:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 423 [2023-12-19 07:03:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:38,443 INFO L225 Difference]: With dead ends: 391 [2023-12-19 07:03:38,443 INFO L226 Difference]: Without dead ends: 195 [2023-12-19 07:03:38,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 422 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 07:03:38,452 INFO L413 NwaCegarLoop]: 333 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, 333 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 07:03:38,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 333 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:03:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-19 07:03:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-12-19 07:03:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 126 states have (on average 1.6031746031746033) internal successors, (202), 126 states have internal predecessors, (202), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-19 07:03:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 336 transitions. [2023-12-19 07:03:38,510 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 336 transitions. Word has length 423 [2023-12-19 07:03:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:38,511 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 336 transitions. [2023-12-19 07:03:38,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-19 07:03:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 336 transitions. [2023-12-19 07:03:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-19 07:03:38,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:38,542 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:38,552 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 07:03:38,742 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 07:03:38,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:38,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1600447269, now seen corresponding path program 1 times [2023-12-19 07:03:38,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:38,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135521688] [2023-12-19 07:03:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:38,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:38,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318215529] [2023-12-19 07:03:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:38,834 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 07:03:38,852 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 07:03:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:39,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:03:39,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:03:39,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:39,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135521688] [2023-12-19 07:03:39,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318215529] [2023-12-19 07:03:39,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318215529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:39,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:39,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:03:39,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387033510] [2023-12-19 07:03:39,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:03:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:03:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:39,148 INFO L87 Difference]: Start difference. First operand 195 states and 336 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:39,234 INFO L93 Difference]: Finished difference Result 583 states and 1006 transitions. [2023-12-19 07:03:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:03:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2023-12-19 07:03:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:39,240 INFO L225 Difference]: With dead ends: 583 [2023-12-19 07:03:39,240 INFO L226 Difference]: Without dead ends: 389 [2023-12-19 07:03:39,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 421 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 07:03:39,242 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 330 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:39,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 908 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:03:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-19 07:03:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2023-12-19 07:03:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 250 states have (on average 1.604) internal successors, (401), 250 states have internal predecessors, (401), 134 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-19 07:03:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 669 transitions. [2023-12-19 07:03:39,327 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 669 transitions. Word has length 423 [2023-12-19 07:03:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:39,328 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 669 transitions. [2023-12-19 07:03:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 669 transitions. [2023-12-19 07:03:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-19 07:03:39,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:39,330 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:39,343 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 07:03:39,540 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 07:03:39,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:39,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1577815015, now seen corresponding path program 1 times [2023-12-19 07:03:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878181078] [2023-12-19 07:03:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:39,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809447523] [2023-12-19 07:03:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:39,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:39,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:39,609 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 07:03:39,653 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 07:03:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:39,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:03:39,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:03:39,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:39,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:39,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878181078] [2023-12-19 07:03:39,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:39,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809447523] [2023-12-19 07:03:39,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809447523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:39,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:03:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803870243] [2023-12-19 07:03:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:39,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:03:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:03:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:39,871 INFO L87 Difference]: Start difference. First operand 387 states and 669 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:39,909 INFO L93 Difference]: Finished difference Result 989 states and 1721 transitions. [2023-12-19 07:03:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:03:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2023-12-19 07:03:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:39,914 INFO L225 Difference]: With dead ends: 989 [2023-12-19 07:03:39,914 INFO L226 Difference]: Without dead ends: 603 [2023-12-19 07:03:39,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 421 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 07:03:39,916 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 189 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:39,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 802 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:03:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-12-19 07:03:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 599. [2023-12-19 07:03:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 426 states have (on average 1.6666666666666667) internal successors, (710), 428 states have internal predecessors, (710), 168 states have call successors, (168), 4 states have call predecessors, (168), 4 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-19 07:03:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 1046 transitions. [2023-12-19 07:03:39,976 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 1046 transitions. Word has length 423 [2023-12-19 07:03:39,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:39,977 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 1046 transitions. [2023-12-19 07:03:39,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:39,977 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 1046 transitions. [2023-12-19 07:03:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 07:03:39,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:39,980 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:39,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 07:03:40,187 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 07:03:40,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:40,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 484275132, now seen corresponding path program 1 times [2023-12-19 07:03:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:40,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758288593] [2023-12-19 07:03:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:40,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:40,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980843273] [2023-12-19 07:03:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:40,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:40,228 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 07:03:40,264 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 07:03:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:40,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:03:40,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:03:40,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:40,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:40,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758288593] [2023-12-19 07:03:40,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:40,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980843273] [2023-12-19 07:03:40,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980843273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:40,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:40,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:03:40,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716458921] [2023-12-19 07:03:40,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:40,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:03:40,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:40,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:03:40,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:40,485 INFO L87 Difference]: Start difference. First operand 599 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:40,526 INFO L93 Difference]: Finished difference Result 1589 states and 2738 transitions. [2023-12-19 07:03:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:03:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2023-12-19 07:03:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:40,532 INFO L225 Difference]: With dead ends: 1589 [2023-12-19 07:03:40,532 INFO L226 Difference]: Without dead ends: 991 [2023-12-19 07:03:40,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 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 07:03:40,534 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 225 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:40,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 656 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:03:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-12-19 07:03:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 603. [2023-12-19 07:03:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 430 states have (on average 1.6604651162790698) internal successors, (714), 432 states have internal predecessors, (714), 168 states have call successors, (168), 4 states have call predecessors, (168), 4 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-19 07:03:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1050 transitions. [2023-12-19 07:03:40,580 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1050 transitions. Word has length 424 [2023-12-19 07:03:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:40,581 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 1050 transitions. [2023-12-19 07:03:40,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1050 transitions. [2023-12-19 07:03:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 07:03:40,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:40,583 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:40,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:03:40,791 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 07:03:40,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:40,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -795588546, now seen corresponding path program 1 times [2023-12-19 07:03:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:40,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319473469] [2023-12-19 07:03:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:40,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:40,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134522432] [2023-12-19 07:03:40,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:40,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:40,834 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 07:03:40,861 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 07:03:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:41,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:03:41,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 1296 proven. 183 refuted. 0 times theorem prover too weak. 7365 trivial. 0 not checked. [2023-12-19 07:03:41,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:03:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 15 proven. 183 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 07:03:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319473469] [2023-12-19 07:03:41,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134522432] [2023-12-19 07:03:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134522432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:03:41,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:03:41,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:03:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725091493] [2023-12-19 07:03:41,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:03:41,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:03:41,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:03:41,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:03:41,793 INFO L87 Difference]: Start difference. First operand 603 states and 1050 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-19 07:03:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:42,103 INFO L93 Difference]: Finished difference Result 1238 states and 2133 transitions. [2023-12-19 07:03:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:03:42,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 424 [2023-12-19 07:03:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:42,107 INFO L225 Difference]: With dead ends: 1238 [2023-12-19 07:03:42,107 INFO L226 Difference]: Without dead ends: 636 [2023-12-19 07:03:42,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 840 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:03:42,108 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 127 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:42,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 667 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:03:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-19 07:03:42,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 627. [2023-12-19 07:03:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 445 states have (on average 1.6292134831460674) internal successors, (725), 448 states have internal predecessors, (725), 173 states have call successors, (173), 8 states have call predecessors, (173), 8 states have return successors, (173), 170 states have call predecessors, (173), 173 states have call successors, (173) [2023-12-19 07:03:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1071 transitions. [2023-12-19 07:03:42,139 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1071 transitions. Word has length 424 [2023-12-19 07:03:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:42,139 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1071 transitions. [2023-12-19 07:03:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-19 07:03:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1071 transitions. [2023-12-19 07:03:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 07:03:42,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:42,141 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:42,150 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 07:03:42,348 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 07:03:42,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:42,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash 979418816, now seen corresponding path program 1 times [2023-12-19 07:03:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559362332] [2023-12-19 07:03:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:42,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573383283] [2023-12-19 07:03:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:42,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:42,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:42,410 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 07:03:42,434 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 07:03:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:42,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:03:42,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4216 proven. 123 refuted. 0 times theorem prover too weak. 4505 trivial. 0 not checked. [2023-12-19 07:03:42,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:03:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 75 proven. 123 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 07:03:43,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:43,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559362332] [2023-12-19 07:03:43,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:43,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573383283] [2023-12-19 07:03:43,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573383283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:03:43,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:03:43,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:03:43,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844112871] [2023-12-19 07:03:43,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:03:43,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:03:43,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:43,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:03:43,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:03:43,192 INFO L87 Difference]: Start difference. First operand 627 states and 1071 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 3 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 3 states have call predecessors, (109), 3 states have call successors, (109) [2023-12-19 07:03:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:43,626 INFO L93 Difference]: Finished difference Result 1261 states and 2142 transitions. [2023-12-19 07:03:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:03:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 3 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 3 states have call predecessors, (109), 3 states have call successors, (109) Word has length 424 [2023-12-19 07:03:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:43,630 INFO L225 Difference]: With dead ends: 1261 [2023-12-19 07:03:43,630 INFO L226 Difference]: Without dead ends: 643 [2023-12-19 07:03:43,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:03:43,632 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 465 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:43,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 614 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:03:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-19 07:03:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 635. [2023-12-19 07:03:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 451 states have (on average 1.5942350332594235) internal successors, (719), 454 states have internal predecessors, (719), 173 states have call successors, (173), 10 states have call predecessors, (173), 10 states have return successors, (173), 170 states have call predecessors, (173), 173 states have call successors, (173) [2023-12-19 07:03:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1065 transitions. [2023-12-19 07:03:43,665 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1065 transitions. Word has length 424 [2023-12-19 07:03:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:43,665 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1065 transitions. [2023-12-19 07:03:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 3 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 3 states have call predecessors, (109), 3 states have call successors, (109) [2023-12-19 07:03:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1065 transitions. [2023-12-19 07:03:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-19 07:03:43,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:43,668 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:43,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 07:03:43,873 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 07:03:43,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash 395790010, now seen corresponding path program 1 times [2023-12-19 07:03:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468030266] [2023-12-19 07:03:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:43,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:43,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44508627] [2023-12-19 07:03:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:43,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:43,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:43,905 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 07:03:43,916 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 07:03:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:44,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:03:44,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4486 proven. 96 refuted. 0 times theorem prover too weak. 4262 trivial. 0 not checked. [2023-12-19 07:03:44,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:03:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 102 proven. 96 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 07:03:44,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468030266] [2023-12-19 07:03:44,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44508627] [2023-12-19 07:03:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44508627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:03:44,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:03:44,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:03:44,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969342022] [2023-12-19 07:03:44,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:03:44,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:03:44,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:03:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:03:44,563 INFO L87 Difference]: Start difference. First operand 635 states and 1065 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-19 07:03:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:44,942 INFO L93 Difference]: Finished difference Result 1333 states and 2213 transitions. [2023-12-19 07:03:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:03:44,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 425 [2023-12-19 07:03:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:44,947 INFO L225 Difference]: With dead ends: 1333 [2023-12-19 07:03:44,947 INFO L226 Difference]: Without dead ends: 707 [2023-12-19 07:03:44,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 842 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:03:44,951 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 536 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:44,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 709 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:03:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-19 07:03:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 696. [2023-12-19 07:03:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 479 states have (on average 1.5427974947807934) internal successors, (739), 482 states have internal predecessors, (739), 202 states have call successors, (202), 14 states have call predecessors, (202), 14 states have return successors, (202), 199 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-19 07:03:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1143 transitions. [2023-12-19 07:03:44,995 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1143 transitions. Word has length 425 [2023-12-19 07:03:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:44,995 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1143 transitions. [2023-12-19 07:03:44,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-19 07:03:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1143 transitions. [2023-12-19 07:03:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-19 07:03:44,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:44,998 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:45,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:03:45,206 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 07:03:45,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:45,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1392610671, now seen corresponding path program 1 times [2023-12-19 07:03:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660678090] [2023-12-19 07:03:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:45,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:45,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:45,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926598114] [2023-12-19 07:03:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:45,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:45,241 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 07:03:45,244 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 07:03:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:45,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:03:45,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 2232 proven. 27 refuted. 0 times theorem prover too weak. 6585 trivial. 0 not checked. [2023-12-19 07:03:45,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:03:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 171 proven. 27 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 07:03:45,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:45,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660678090] [2023-12-19 07:03:45,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:45,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926598114] [2023-12-19 07:03:45,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926598114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:03:45,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:03:45,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:03:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734563328] [2023-12-19 07:03:45,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:03:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:03:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:03:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:03:45,796 INFO L87 Difference]: Start difference. First operand 696 states and 1143 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2023-12-19 07:03:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:46,356 INFO L93 Difference]: Finished difference Result 1348 states and 2208 transitions. [2023-12-19 07:03:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:03:46,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 426 [2023-12-19 07:03:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:46,361 INFO L225 Difference]: With dead ends: 1348 [2023-12-19 07:03:46,361 INFO L226 Difference]: Without dead ends: 714 [2023-12-19 07:03:46,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:03:46,363 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 690 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:46,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 967 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:03:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-12-19 07:03:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 704. [2023-12-19 07:03:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 485 states have (on average 1.5278350515463917) internal successors, (741), 488 states have internal predecessors, (741), 202 states have call successors, (202), 16 states have call predecessors, (202), 16 states have return successors, (202), 199 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-19 07:03:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1145 transitions. [2023-12-19 07:03:46,405 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1145 transitions. Word has length 426 [2023-12-19 07:03:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:46,405 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 1145 transitions. [2023-12-19 07:03:46,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2023-12-19 07:03:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1145 transitions. [2023-12-19 07:03:46,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-19 07:03:46,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:46,408 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:46,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 07:03:46,614 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 07:03:46,615 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:46,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1526624177, now seen corresponding path program 1 times [2023-12-19 07:03:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:46,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095255929] [2023-12-19 07:03:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:46,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493607606] [2023-12-19 07:03:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:46,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:46,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:46,681 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 07:03:46,705 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 07:03:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:46,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:03:46,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4108 proven. 69 refuted. 0 times theorem prover too weak. 4667 trivial. 0 not checked. [2023-12-19 07:03:47,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:03:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 129 proven. 69 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 07:03:47,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:47,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095255929] [2023-12-19 07:03:47,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:47,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493607606] [2023-12-19 07:03:47,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493607606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:03:47,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:03:47,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:03:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584426268] [2023-12-19 07:03:47,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:03:47,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:03:47,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:03:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:03:47,303 INFO L87 Difference]: Start difference. First operand 704 states and 1145 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (90), 2 states have call predecessors, (90), 4 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-19 07:03:47,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:47,604 INFO L93 Difference]: Finished difference Result 1368 states and 2216 transitions. [2023-12-19 07:03:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:03:47,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (90), 2 states have call predecessors, (90), 4 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 426 [2023-12-19 07:03:47,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:47,608 INFO L225 Difference]: With dead ends: 1368 [2023-12-19 07:03:47,608 INFO L226 Difference]: Without dead ends: 726 [2023-12-19 07:03:47,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 844 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 07:03:47,610 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 211 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:47,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 611 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:03:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-19 07:03:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 712. [2023-12-19 07:03:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 491 states have (on average 1.4969450101832993) internal successors, (735), 494 states have internal predecessors, (735), 202 states have call successors, (202), 18 states have call predecessors, (202), 18 states have return successors, (202), 199 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-19 07:03:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1139 transitions. [2023-12-19 07:03:47,651 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1139 transitions. Word has length 426 [2023-12-19 07:03:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:47,651 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1139 transitions. [2023-12-19 07:03:47,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (90), 2 states have call predecessors, (90), 4 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-19 07:03:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1139 transitions. [2023-12-19 07:03:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-19 07:03:47,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:47,654 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:47,671 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 07:03:47,861 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 07:03:47,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:47,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:47,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1155254703, now seen corresponding path program 1 times [2023-12-19 07:03:47,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:47,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327272368] [2023-12-19 07:03:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:47,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:47,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:47,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506468288] [2023-12-19 07:03:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:47,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:47,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:47,931 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 07:03:47,971 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 07:03:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:48,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:03:48,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:03:48,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:48,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327272368] [2023-12-19 07:03:48,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506468288] [2023-12-19 07:03:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506468288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:48,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:48,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:03:48,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395283931] [2023-12-19 07:03:48,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:03:48,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:48,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:03:48,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:48,254 INFO L87 Difference]: Start difference. First operand 712 states and 1139 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:48,348 INFO L93 Difference]: Finished difference Result 2012 states and 3229 transitions. [2023-12-19 07:03:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:03:48,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 426 [2023-12-19 07:03:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:48,353 INFO L225 Difference]: With dead ends: 2012 [2023-12-19 07:03:48,353 INFO L226 Difference]: Without dead ends: 1362 [2023-12-19 07:03:48,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:48,355 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 317 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:48,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 635 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:03:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-12-19 07:03:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 906. [2023-12-19 07:03:48,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 593 states have (on average 1.4317032040472175) internal successors, (849), 598 states have internal predecessors, (849), 286 states have call successors, (286), 26 states have call predecessors, (286), 26 states have return successors, (286), 281 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-19 07:03:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1421 transitions. [2023-12-19 07:03:48,428 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1421 transitions. Word has length 426 [2023-12-19 07:03:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:48,429 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1421 transitions. [2023-12-19 07:03:48,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1421 transitions. [2023-12-19 07:03:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-19 07:03:48,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:48,431 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:48,450 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 07:03:48,638 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 07:03:48,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:48,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1510118453, now seen corresponding path program 1 times [2023-12-19 07:03:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384658861] [2023-12-19 07:03:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:48,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:48,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740671021] [2023-12-19 07:03:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:48,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:48,694 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 07:03:48,712 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 07:03:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:48,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:03:48,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:03:49,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:49,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384658861] [2023-12-19 07:03:49,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740671021] [2023-12-19 07:03:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740671021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:49,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:03:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580248976] [2023-12-19 07:03:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:49,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:03:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:03:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:03:49,398 INFO L87 Difference]: Start difference. First operand 906 states and 1421 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:50,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:50,334 INFO L93 Difference]: Finished difference Result 4314 states and 6721 transitions. [2023-12-19 07:03:50,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:03:50,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 427 [2023-12-19 07:03:50,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:50,347 INFO L225 Difference]: With dead ends: 4314 [2023-12-19 07:03:50,347 INFO L226 Difference]: Without dead ends: 3470 [2023-12-19 07:03:50,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:03:50,349 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 711 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:50,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1908 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:03:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2023-12-19 07:03:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2251. [2023-12-19 07:03:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1606 states have (on average 1.4919053549190535) internal successors, (2396), 1619 states have internal predecessors, (2396), 586 states have call successors, (586), 58 states have call predecessors, (586), 58 states have return successors, (586), 573 states have call predecessors, (586), 586 states have call successors, (586) [2023-12-19 07:03:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3568 transitions. [2023-12-19 07:03:50,552 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3568 transitions. Word has length 427 [2023-12-19 07:03:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:50,552 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3568 transitions. [2023-12-19 07:03:50,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:03:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3568 transitions. [2023-12-19 07:03:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-19 07:03:50,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:50,555 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:50,576 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 07:03:50,762 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 07:03:50,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:50,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1251953015, now seen corresponding path program 1 times [2023-12-19 07:03:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770935744] [2023-12-19 07:03:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:50,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520285319] [2023-12-19 07:03:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:50,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:50,800 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 07:03:50,823 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 07:03:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:51,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 07:03:51,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4488 proven. 99 refuted. 0 times theorem prover too weak. 4257 trivial. 0 not checked. [2023-12-19 07:03:51,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:03:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 99 proven. 99 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 07:03:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770935744] [2023-12-19 07:03:51,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520285319] [2023-12-19 07:03:51,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520285319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:03:51,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:03:51,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-19 07:03:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989014674] [2023-12-19 07:03:51,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:03:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 07:03:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 07:03:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:03:51,923 INFO L87 Difference]: Start difference. First operand 2251 states and 3568 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-19 07:03:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:57,111 INFO L93 Difference]: Finished difference Result 29971 states and 47644 transitions. [2023-12-19 07:03:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-19 07:03:57,112 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 427 [2023-12-19 07:03:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:57,199 INFO L225 Difference]: With dead ends: 29971 [2023-12-19 07:03:57,199 INFO L226 Difference]: Without dead ends: 27786 [2023-12-19 07:03:57,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 849 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1458, Invalid=7472, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 07:03:57,214 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 6049 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 3096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6147 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 5487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3096 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:57,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6147 Valid, 3506 Invalid, 5487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3096 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 07:03:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27786 states. [2023-12-19 07:03:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27786 to 12192. [2023-12-19 07:03:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12192 states, 9787 states have (on average 1.5554306733421885) internal successors, (15223), 9848 states have internal predecessors, (15223), 2167 states have call successors, (2167), 237 states have call predecessors, (2167), 237 states have return successors, (2167), 2106 states have call predecessors, (2167), 2167 states have call successors, (2167) [2023-12-19 07:03:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 19557 transitions. [2023-12-19 07:03:58,462 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 19557 transitions. Word has length 427 [2023-12-19 07:03:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:58,462 INFO L495 AbstractCegarLoop]: Abstraction has 12192 states and 19557 transitions. [2023-12-19 07:03:58,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-19 07:03:58,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 19557 transitions. [2023-12-19 07:03:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-19 07:03:58,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:58,473 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:58,480 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 07:03:58,680 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 07:03:58,681 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:58,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1357463241, now seen corresponding path program 1 times [2023-12-19 07:03:58,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069345218] [2023-12-19 07:03:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:58,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865622808] [2023-12-19 07:03:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:58,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:58,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:58,712 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 07:03:58,735 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 07:03:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:58,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:03:58,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:03:59,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:59,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069345218] [2023-12-19 07:03:59,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865622808] [2023-12-19 07:03:59,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865622808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:59,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:59,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:03:59,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321896209] [2023-12-19 07:03:59,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:59,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:03:59,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:59,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:03:59,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:59,303 INFO L87 Difference]: Start difference. First operand 12192 states and 19557 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:04:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:04:00,183 INFO L93 Difference]: Finished difference Result 24242 states and 38914 transitions. [2023-12-19 07:04:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:04:00,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 427 [2023-12-19 07:04:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:04:00,253 INFO L225 Difference]: With dead ends: 24242 [2023-12-19 07:04:00,253 INFO L226 Difference]: Without dead ends: 12192 [2023-12-19 07:04:00,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:04:00,270 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:04:00,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 314 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:04:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12192 states. [2023-12-19 07:04:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12192 to 12192. [2023-12-19 07:04:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12192 states, 9787 states have (on average 1.5480739756820272) internal successors, (15151), 9848 states have internal predecessors, (15151), 2167 states have call successors, (2167), 237 states have call predecessors, (2167), 237 states have return successors, (2167), 2106 states have call predecessors, (2167), 2167 states have call successors, (2167) [2023-12-19 07:04:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 19485 transitions. [2023-12-19 07:04:01,051 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 19485 transitions. Word has length 427 [2023-12-19 07:04:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:04:01,052 INFO L495 AbstractCegarLoop]: Abstraction has 12192 states and 19485 transitions. [2023-12-19 07:04:01,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:04:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 19485 transitions. [2023-12-19 07:04:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-19 07:04:01,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:04:01,060 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:01,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 07:04:01,267 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 07:04:01,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:04:01,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:04:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash -935858217, now seen corresponding path program 1 times [2023-12-19 07:04:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:04:01,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538858260] [2023-12-19 07:04:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:04:01,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:04:01,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:04:01,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944734237] [2023-12-19 07:04:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:04:01,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:04:01,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:04:01,314 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 07:04:01,348 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 07:04:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:04:01,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 07:04:01,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:04:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:04:02,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:04:02,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:04:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538858260] [2023-12-19 07:04:02,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:04:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944734237] [2023-12-19 07:04:02,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944734237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:04:02,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:04:02,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:04:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715132307] [2023-12-19 07:04:02,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:04:02,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:04:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:04:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:04:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:04:02,058 INFO L87 Difference]: Start difference. First operand 12192 states and 19485 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:04:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:04:05,446 INFO L93 Difference]: Finished difference Result 51044 states and 81672 transitions. [2023-12-19 07:04:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:04:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 428 [2023-12-19 07:04:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:04:05,517 INFO L225 Difference]: With dead ends: 51044 [2023-12-19 07:04:05,518 INFO L226 Difference]: Without dead ends: 38994 [2023-12-19 07:04:05,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:04:05,539 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1633 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:04:05,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1631 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 07:04:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38994 states. [2023-12-19 07:04:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38994 to 37520. [2023-12-19 07:04:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37520 states, 30267 states have (on average 1.517461261439852) internal successors, (45929), 30484 states have internal predecessors, (45929), 6523 states have call successors, (6523), 729 states have call predecessors, (6523), 729 states have return successors, (6523), 6306 states have call predecessors, (6523), 6523 states have call successors, (6523) [2023-12-19 07:04:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37520 states to 37520 states and 58975 transitions. [2023-12-19 07:04:08,426 INFO L78 Accepts]: Start accepts. Automaton has 37520 states and 58975 transitions. Word has length 428 [2023-12-19 07:04:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:04:08,427 INFO L495 AbstractCegarLoop]: Abstraction has 37520 states and 58975 transitions. [2023-12-19 07:04:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:04:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 37520 states and 58975 transitions. [2023-12-19 07:04:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-19 07:04:08,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:04:08,450 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:08,474 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 07:04:08,659 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 07:04:08,659 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:04:08,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:04:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -795309607, now seen corresponding path program 1 times [2023-12-19 07:04:08,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:04:08,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248090406] [2023-12-19 07:04:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:04:08,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:04:08,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:04:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665510351] [2023-12-19 07:04:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:04:08,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:04:08,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:04:08,706 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 07:04:08,731 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 07:04:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:04:08,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 07:04:08,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:04:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 1182 proven. 12 refuted. 0 times theorem prover too weak. 7650 trivial. 0 not checked. [2023-12-19 07:04:09,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:04:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 186 proven. 12 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 07:04:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:04:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248090406] [2023-12-19 07:04:10,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:04:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665510351] [2023-12-19 07:04:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665510351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:04:10,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:04:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-19 07:04:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620858240] [2023-12-19 07:04:10,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:04:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 07:04:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:04:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 07:04:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-12-19 07:04:10,087 INFO L87 Difference]: Start difference. First operand 37520 states and 58975 transitions. Second operand has 23 states, 23 states have (on average 8.130434782608695) internal successors, (187), 23 states have internal predecessors, (187), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-19 07:04:45,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:04:45,242 INFO L93 Difference]: Finished difference Result 230974 states and 354520 transitions. [2023-12-19 07:04:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-12-19 07:04:45,242 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.130434782608695) internal successors, (187), 23 states have internal predecessors, (187), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) Word has length 428 [2023-12-19 07:04:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:04:45,875 INFO L225 Difference]: With dead ends: 230974 [2023-12-19 07:04:45,875 INFO L226 Difference]: Without dead ends: 193596 [2023-12-19 07:04:45,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14679 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=6501, Invalid=29031, Unknown=0, NotChecked=0, Total=35532 [2023-12-19 07:04:45,976 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 10385 mSDsluCounter, 3671 mSDsCounter, 0 mSdLazyCounter, 5400 mSolverCounterSat, 7694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10563 SdHoareTripleChecker+Valid, 3945 SdHoareTripleChecker+Invalid, 13094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7694 IncrementalHoareTripleChecker+Valid, 5400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:04:45,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10563 Valid, 3945 Invalid, 13094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7694 Valid, 5400 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-19 07:04:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193596 states. [2023-12-19 07:04:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193596 to 107812. [2023-12-19 07:04:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107812 states, 85724 states have (on average 1.4829336008585694) internal successors, (127123), 86397 states have internal predecessors, (127123), 19555 states have call successors, (19555), 2532 states have call predecessors, (19555), 2532 states have return successors, (19555), 18882 states have call predecessors, (19555), 19555 states have call successors, (19555) [2023-12-19 07:04:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107812 states to 107812 states and 166233 transitions. [2023-12-19 07:04:57,577 INFO L78 Accepts]: Start accepts. Automaton has 107812 states and 166233 transitions. Word has length 428 [2023-12-19 07:04:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:04:57,578 INFO L495 AbstractCegarLoop]: Abstraction has 107812 states and 166233 transitions. [2023-12-19 07:04:57,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.130434782608695) internal successors, (187), 23 states have internal predecessors, (187), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-19 07:04:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 107812 states and 166233 transitions. [2023-12-19 07:04:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-19 07:04:57,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:04:57,631 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:57,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 07:04:57,837 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 07:04:57,838 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:04:57,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:04:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2075173285, now seen corresponding path program 1 times [2023-12-19 07:04:57,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:04:57,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234632310] [2023-12-19 07:04:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:04:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:04:57,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:04:57,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688021338] [2023-12-19 07:04:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:04:57,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:04:57,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:04:57,868 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 07:04:57,886 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 07:04:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:04:58,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:04:58,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:04:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 07:04:59,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:04:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:04:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234632310] [2023-12-19 07:04:59,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:04:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688021338] [2023-12-19 07:04:59,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688021338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:04:59,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:04:59,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:04:59,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559065055] [2023-12-19 07:04:59,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:04:59,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:04:59,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:04:59,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:04:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:04:59,151 INFO L87 Difference]: Start difference. First operand 107812 states and 166233 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:05:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:05:09,146 INFO L93 Difference]: Finished difference Result 251669 states and 387256 transitions. [2023-12-19 07:05:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:05:09,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 428 [2023-12-19 07:05:09,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:05:09,512 INFO L225 Difference]: With dead ends: 251669 [2023-12-19 07:05:09,512 INFO L226 Difference]: Without dead ends: 144011 [2023-12-19 07:05:09,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:05:09,800 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 278 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:05:09,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 950 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:05:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144011 states. [2023-12-19 07:05:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144011 to 136785. [2023-12-19 07:05:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136785 states, 114697 states have (on average 1.4933694865602414) internal successors, (171285), 115369 states have internal predecessors, (171285), 19555 states have call successors, (19555), 2532 states have call predecessors, (19555), 2532 states have return successors, (19555), 18883 states have call predecessors, (19555), 19555 states have call successors, (19555) [2023-12-19 07:05:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136785 states to 136785 states and 210395 transitions. [2023-12-19 07:05:20,351 INFO L78 Accepts]: Start accepts. Automaton has 136785 states and 210395 transitions. Word has length 428 [2023-12-19 07:05:20,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:05:20,352 INFO L495 AbstractCegarLoop]: Abstraction has 136785 states and 210395 transitions. [2023-12-19 07:05:20,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 07:05:20,352 INFO L276 IsEmpty]: Start isEmpty. Operand 136785 states and 210395 transitions. [2023-12-19 07:05:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-19 07:05:20,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:05:20,398 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:20,405 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 07:05:20,605 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 07:05:20,605 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:05:20,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:05:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1682146275, now seen corresponding path program 1 times [2023-12-19 07:05:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:05:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134378868] [2023-12-19 07:05:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:05:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:05:20,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:05:20,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377006015] [2023-12-19 07:05:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:05:20,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:05:20,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:05:20,633 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 07:05:20,635 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 07:05:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:05:21,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 07:05:21,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:05:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4031 proven. 324 refuted. 0 times theorem prover too weak. 4489 trivial. 0 not checked. [2023-12-19 07:05:22,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:05:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 408 proven. 177 refuted. 0 times theorem prover too weak. 8259 trivial. 0 not checked. [2023-12-19 07:05:24,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:05:24,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134378868] [2023-12-19 07:05:24,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:05:24,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377006015] [2023-12-19 07:05:24,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377006015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:05:24,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:05:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-19 07:05:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620543980] [2023-12-19 07:05:24,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:05:24,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 07:05:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:05:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 07:05:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2023-12-19 07:05:24,064 INFO L87 Difference]: Start difference. First operand 136785 states and 210395 transitions. Second operand has 26 states, 24 states have (on average 6.791666666666667) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 4 states have call predecessors, (88), 9 states have return successors, (90), 9 states have call predecessors, (90), 7 states have call successors, (90) [2023-12-19 07:06:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:06:12,955 INFO L93 Difference]: Finished difference Result 631822 states and 958358 transitions. [2023-12-19 07:06:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-19 07:06:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.791666666666667) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 4 states have call predecessors, (88), 9 states have return successors, (90), 9 states have call predecessors, (90), 7 states have call successors, (90) Word has length 428 [2023-12-19 07:06:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:06:14,350 INFO L225 Difference]: With dead ends: 631822 [2023-12-19 07:06:14,351 INFO L226 Difference]: Without dead ends: 508774 [2023-12-19 07:06:14,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=994, Invalid=2312, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 07:06:14,770 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1009 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:06:14,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 2112 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 07:06:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508774 states.