/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:35:00,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:35:00,803 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 07:35:00,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:35:00,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:35:00,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:35:00,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:35:00,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:35:00,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:35:00,836 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:35:00,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:35:00,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:35:00,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:35:00,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:35:00,838 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:35:00,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:35:00,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:35:00,838 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:35:00,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:35:00,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:35:00,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:35:00,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:35:00,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:35:00,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:35:00,840 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:35:00,840 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:35:00,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:35:00,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:35:00,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:35:00,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:35:00,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:35:00,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:35:00,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:35:00,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:35:00,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:35:00,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:35:00,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:35:00,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:35:00,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:35:00,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:35:00,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:35:00,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:35:00,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:35:00,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:35:01,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:35:01,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:35:01,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:35:01,073 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:35:01,074 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:35:01,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-12-19 07:35:02,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:35:02,457 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:35:02,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-12-19 07:35:02,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd50345d/251bf1c825124481b56098ccfc3da681/FLAGed8eb3c73 [2023-12-19 07:35:02,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd50345d/251bf1c825124481b56098ccfc3da681 [2023-12-19 07:35:02,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:35:02,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:35:02,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:35:02,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:35:02,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:35:02,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:02,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b380d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02, skipping insertion in model container [2023-12-19 07:35:02,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:02,535 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:35:02,660 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-12-19 07:35:02,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:35:02,815 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:35:02,827 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-12-19 07:35:02,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:35:02,900 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:35:02,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02 WrapperNode [2023-12-19 07:35:02,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:35:02,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:35:02,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:35:02,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:35:02,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:02,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,015 INFO L138 Inliner]: procedures = 26, calls = 127, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 868 [2023-12-19 07:35:03,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:35:03,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:35:03,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:35:03,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:35:03,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,119 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 07:35:03,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:35:03,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:35:03,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:35:03,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:35:03,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (1/1) ... [2023-12-19 07:35:03,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:35:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:03,227 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 07:35:03,267 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 07:35:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:35:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:35:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:35:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:35:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:35:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:35:03,388 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:35:03,390 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:35:04,211 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:35:04,260 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:35:04,260 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:35:04,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:35:04 BoogieIcfgContainer [2023-12-19 07:35:04,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:35:04,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:35:04,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:35:04,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:35:04,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:35:02" (1/3) ... [2023-12-19 07:35:04,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e5ee4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:35:04, skipping insertion in model container [2023-12-19 07:35:04,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:35:02" (2/3) ... [2023-12-19 07:35:04,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e5ee4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:35:04, skipping insertion in model container [2023-12-19 07:35:04,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:35:04" (3/3) ... [2023-12-19 07:35:04,268 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-12-19 07:35:04,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:35:04,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:35:04,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:35:04,342 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;@7b68b1ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:35:04,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:35:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 227 states have (on average 1.6343612334801763) internal successors, (371), 228 states have internal predecessors, (371), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-19 07:35:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-19 07:35:04,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:04,403 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:04,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:04,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:04,410 INFO L85 PathProgramCache]: Analyzing trace with hash -31867623, now seen corresponding path program 1 times [2023-12-19 07:35:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601765558] [2023-12-19 07:35:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:04,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601765558] [2023-12-19 07:35:04,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:35:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911411773] [2023-12-19 07:35:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:04,760 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 07:35:04,800 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 07:35:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:05,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:35:05,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 25538 trivial. 0 not checked. [2023-12-19 07:35:05,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911411773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:05,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:35:05,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482229605] [2023-12-19 07:35:05,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:05,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:35:05,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:35:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:35:05,354 INFO L87 Difference]: Start difference. First operand has 344 states, 227 states have (on average 1.6343612334801763) internal successors, (371), 228 states have internal predecessors, (371), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-19 07:35:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:05,424 INFO L93 Difference]: Finished difference Result 685 states and 1310 transitions. [2023-12-19 07:35:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:35:05,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) Word has length 726 [2023-12-19 07:35:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:05,452 INFO L225 Difference]: With dead ends: 685 [2023-12-19 07:35:05,452 INFO L226 Difference]: Without dead ends: 342 [2023-12-19 07:35:05,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 725 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 07:35:05,467 INFO L413 NwaCegarLoop]: 589 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, 589 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 07:35:05,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-19 07:35:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-12-19 07:35:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 226 states have (on average 1.6106194690265487) internal successors, (364), 226 states have internal predecessors, (364), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-19 07:35:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 592 transitions. [2023-12-19 07:35:05,560 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 592 transitions. Word has length 726 [2023-12-19 07:35:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:05,561 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 592 transitions. [2023-12-19 07:35:05,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-19 07:35:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 592 transitions. [2023-12-19 07:35:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-19 07:35:05,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:05,576 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:05,594 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 07:35:05,786 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 07:35:05,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:05,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2050886755, now seen corresponding path program 1 times [2023-12-19 07:35:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178465686] [2023-12-19 07:35:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:05,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966015712] [2023-12-19 07:35:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:05,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:05,876 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 07:35:05,902 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 07:35:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:06,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:35:06,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:06,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:06,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:06,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178465686] [2023-12-19 07:35:06,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:06,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966015712] [2023-12-19 07:35:06,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966015712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:06,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:35:06,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652014412] [2023-12-19 07:35:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:06,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:35:06,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:06,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:35:06,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:35:06,356 INFO L87 Difference]: Start difference. First operand 342 states and 592 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:06,397 INFO L93 Difference]: Finished difference Result 684 states and 1185 transitions. [2023-12-19 07:35:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:35:06,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 726 [2023-12-19 07:35:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:06,402 INFO L225 Difference]: With dead ends: 684 [2023-12-19 07:35:06,402 INFO L226 Difference]: Without dead ends: 343 [2023-12-19 07:35:06,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 724 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 07:35:06,404 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:06,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-19 07:35:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-12-19 07:35:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 227 states have (on average 1.6079295154185023) internal successors, (365), 227 states have internal predecessors, (365), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-19 07:35:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 593 transitions. [2023-12-19 07:35:06,447 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 593 transitions. Word has length 726 [2023-12-19 07:35:06,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:06,451 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 593 transitions. [2023-12-19 07:35:06,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 593 transitions. [2023-12-19 07:35:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-12-19 07:35:06,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:06,464 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:06,486 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 07:35:06,677 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 07:35:06,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:06,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:06,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1428924628, now seen corresponding path program 1 times [2023-12-19 07:35:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:06,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919499597] [2023-12-19 07:35:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:06,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:06,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:06,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791646525] [2023-12-19 07:35:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:06,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:06,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:06,750 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 07:35:06,772 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 07:35:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:07,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:35:07,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:07,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919499597] [2023-12-19 07:35:07,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791646525] [2023-12-19 07:35:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791646525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:07,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:35:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879434960] [2023-12-19 07:35:07,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:35:07,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:35:07,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:35:07,166 INFO L87 Difference]: Start difference. First operand 343 states and 593 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:07,257 INFO L93 Difference]: Finished difference Result 921 states and 1593 transitions. [2023-12-19 07:35:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:35:07,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 727 [2023-12-19 07:35:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:07,266 INFO L225 Difference]: With dead ends: 921 [2023-12-19 07:35:07,266 INFO L226 Difference]: Without dead ends: 579 [2023-12-19 07:35:07,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 725 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 07:35:07,270 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 397 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:07,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1428 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-12-19 07:35:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 576. [2023-12-19 07:35:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 386 states have (on average 1.61139896373057) internal successors, (622), 387 states have internal predecessors, (622), 187 states have call successors, (187), 2 states have call predecessors, (187), 2 states have return successors, (187), 186 states have call predecessors, (187), 187 states have call successors, (187) [2023-12-19 07:35:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 996 transitions. [2023-12-19 07:35:07,336 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 996 transitions. Word has length 727 [2023-12-19 07:35:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:07,338 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 996 transitions. [2023-12-19 07:35:07,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 996 transitions. [2023-12-19 07:35:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:35:07,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:07,343 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:07,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:35:07,553 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 07:35:07,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:07,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1471251898, now seen corresponding path program 1 times [2023-12-19 07:35:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:07,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338695999] [2023-12-19 07:35:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:07,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836883377] [2023-12-19 07:35:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:07,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:07,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:07,612 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 07:35:07,636 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 07:35:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:07,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:35:07,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:08,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:08,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338695999] [2023-12-19 07:35:08,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836883377] [2023-12-19 07:35:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836883377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:08,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:08,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:35:08,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335057776] [2023-12-19 07:35:08,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:08,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:35:08,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:08,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:35:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:35:08,008 INFO L87 Difference]: Start difference. First operand 576 states and 996 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:08,067 INFO L93 Difference]: Finished difference Result 1158 states and 1996 transitions. [2023-12-19 07:35:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:35:08,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-12-19 07:35:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:08,071 INFO L225 Difference]: With dead ends: 1158 [2023-12-19 07:35:08,071 INFO L226 Difference]: Without dead ends: 583 [2023-12-19 07:35:08,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 07:35:08,076 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 371 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:08,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1188 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-19 07:35:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 431. [2023-12-19 07:35:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 314 states have (on average 1.6656050955414012) internal successors, (523), 314 states have internal predecessors, (523), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-19 07:35:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 751 transitions. [2023-12-19 07:35:08,104 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 751 transitions. Word has length 728 [2023-12-19 07:35:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:08,107 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 751 transitions. [2023-12-19 07:35:08,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 751 transitions. [2023-12-19 07:35:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:35:08,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:08,113 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:08,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 07:35:08,322 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 07:35:08,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:08,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:08,324 INFO L85 PathProgramCache]: Analyzing trace with hash 57067770, now seen corresponding path program 1 times [2023-12-19 07:35:08,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:08,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936915350] [2023-12-19 07:35:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:08,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:08,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:08,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87875627] [2023-12-19 07:35:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:08,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:08,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:08,389 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 07:35:08,423 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 07:35:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:08,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:35:08,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:08,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936915350] [2023-12-19 07:35:08,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87875627] [2023-12-19 07:35:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87875627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:35:08,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937862716] [2023-12-19 07:35:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:08,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:35:08,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:08,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:35:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:35:08,817 INFO L87 Difference]: Start difference. First operand 431 states and 751 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:08,862 INFO L93 Difference]: Finished difference Result 1291 states and 2251 transitions. [2023-12-19 07:35:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:35:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-12-19 07:35:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:08,867 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 07:35:08,867 INFO L226 Difference]: Without dead ends: 861 [2023-12-19 07:35:08,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 07:35:08,868 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 579 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:08,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1184 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-19 07:35:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 859. [2023-12-19 07:35:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 626 states have (on average 1.65814696485623) internal successors, (1038), 626 states have internal predecessors, (1038), 228 states have call successors, (228), 4 states have call predecessors, (228), 4 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-19 07:35:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1494 transitions. [2023-12-19 07:35:08,912 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1494 transitions. Word has length 728 [2023-12-19 07:35:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:08,912 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1494 transitions. [2023-12-19 07:35:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1494 transitions. [2023-12-19 07:35:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:35:08,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:08,918 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:08,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 07:35:09,126 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 07:35:09,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:09,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:09,127 INFO L85 PathProgramCache]: Analyzing trace with hash -840325508, now seen corresponding path program 1 times [2023-12-19 07:35:09,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:09,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808089104] [2023-12-19 07:35:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:09,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:09,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055693241] [2023-12-19 07:35:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:09,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:09,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:09,196 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 07:35:09,197 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 07:35:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:09,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:35:09,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:09,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:09,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:09,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808089104] [2023-12-19 07:35:09,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:09,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055693241] [2023-12-19 07:35:09,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055693241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:09,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:09,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:35:09,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108404300] [2023-12-19 07:35:09,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:09,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:35:09,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:09,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:35:09,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:35:09,666 INFO L87 Difference]: Start difference. First operand 859 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:09,739 INFO L93 Difference]: Finished difference Result 2259 states and 3952 transitions. [2023-12-19 07:35:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:35:09,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-12-19 07:35:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:09,746 INFO L225 Difference]: With dead ends: 2259 [2023-12-19 07:35:09,746 INFO L226 Difference]: Without dead ends: 1401 [2023-12-19 07:35:09,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 07:35:09,749 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 308 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:09,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1147 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-19 07:35:09,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1397. [2023-12-19 07:35:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1094 states have (on average 1.696526508226691) internal successors, (1856), 1096 states have internal predecessors, (1856), 296 states have call successors, (296), 6 states have call predecessors, (296), 6 states have return successors, (296), 294 states have call predecessors, (296), 296 states have call successors, (296) [2023-12-19 07:35:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2448 transitions. [2023-12-19 07:35:09,825 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2448 transitions. Word has length 728 [2023-12-19 07:35:09,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:09,825 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 2448 transitions. [2023-12-19 07:35:09,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:09,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2448 transitions. [2023-12-19 07:35:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:35:09,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:09,831 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:09,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:35:10,040 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 07:35:10,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:10,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:10,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1499155832, now seen corresponding path program 1 times [2023-12-19 07:35:10,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39529006] [2023-12-19 07:35:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:10,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:10,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:10,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598820353] [2023-12-19 07:35:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:10,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:10,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:10,117 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 07:35:10,118 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 07:35:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:10,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:35:10,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:10,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:10,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39529006] [2023-12-19 07:35:10,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:10,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598820353] [2023-12-19 07:35:10,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598820353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:10,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:10,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:35:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937511192] [2023-12-19 07:35:10,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:10,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:35:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:10,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:35:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:35:10,584 INFO L87 Difference]: Start difference. First operand 1397 states and 2448 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:10,679 INFO L93 Difference]: Finished difference Result 3595 states and 6234 transitions. [2023-12-19 07:35:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:35:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 729 [2023-12-19 07:35:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:10,694 INFO L225 Difference]: With dead ends: 3595 [2023-12-19 07:35:10,694 INFO L226 Difference]: Without dead ends: 2199 [2023-12-19 07:35:10,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 727 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 07:35:10,705 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 331 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:10,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1167 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:10,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2023-12-19 07:35:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2195. [2023-12-19 07:35:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1636 states have (on average 1.6356968215158925) internal successors, (2676), 1642 states have internal predecessors, (2676), 546 states have call successors, (546), 12 states have call predecessors, (546), 12 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-12-19 07:35:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3768 transitions. [2023-12-19 07:35:10,826 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3768 transitions. Word has length 729 [2023-12-19 07:35:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:10,827 INFO L495 AbstractCegarLoop]: Abstraction has 2195 states and 3768 transitions. [2023-12-19 07:35:10,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3768 transitions. [2023-12-19 07:35:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:35:10,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:10,833 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:10,854 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 07:35:11,043 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 07:35:11,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:11,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash -306282502, now seen corresponding path program 1 times [2023-12-19 07:35:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439155805] [2023-12-19 07:35:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:11,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:11,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:11,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136520746] [2023-12-19 07:35:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:11,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:11,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:11,113 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 07:35:11,145 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 07:35:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:11,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:35:11,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 9335 proven. 78 refuted. 0 times theorem prover too weak. 16351 trivial. 0 not checked. [2023-12-19 07:35:11,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 261 proven. 78 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-19 07:35:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439155805] [2023-12-19 07:35:12,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136520746] [2023-12-19 07:35:12,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136520746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:12,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:12,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:35:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871776394] [2023-12-19 07:35:12,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:35:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:35:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:35:12,066 INFO L87 Difference]: Start difference. First operand 2195 states and 3768 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-19 07:35:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:12,721 INFO L93 Difference]: Finished difference Result 4429 states and 7571 transitions. [2023-12-19 07:35:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:35:12,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 729 [2023-12-19 07:35:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:12,731 INFO L225 Difference]: With dead ends: 4429 [2023-12-19 07:35:12,732 INFO L226 Difference]: Without dead ends: 2235 [2023-12-19 07:35:12,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1450 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 07:35:12,737 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1014 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:12,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1173 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:35:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2023-12-19 07:35:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2211. [2023-12-19 07:35:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 1648 states have (on average 1.6189320388349515) internal successors, (2668), 1654 states have internal predecessors, (2668), 546 states have call successors, (546), 16 states have call predecessors, (546), 16 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-12-19 07:35:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3760 transitions. [2023-12-19 07:35:12,889 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3760 transitions. Word has length 729 [2023-12-19 07:35:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:12,890 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 3760 transitions. [2023-12-19 07:35:12,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-19 07:35:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3760 transitions. [2023-12-19 07:35:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:35:12,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:12,896 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:12,910 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 07:35:13,105 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 07:35:13,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:13,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash 155220943, now seen corresponding path program 1 times [2023-12-19 07:35:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:13,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507822237] [2023-12-19 07:35:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:13,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749355562] [2023-12-19 07:35:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:13,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:13,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:13,178 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 07:35:13,216 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 07:35:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:13,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:35:13,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:14,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:14,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507822237] [2023-12-19 07:35:14,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749355562] [2023-12-19 07:35:14,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749355562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:14,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:14,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:35:14,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917613843] [2023-12-19 07:35:14,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:14,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:35:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:14,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:35:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:35:14,291 INFO L87 Difference]: Start difference. First operand 2211 states and 3760 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:14,815 INFO L93 Difference]: Finished difference Result 10915 states and 18548 transitions. [2023-12-19 07:35:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:35:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 731 [2023-12-19 07:35:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:14,883 INFO L225 Difference]: With dead ends: 10915 [2023-12-19 07:35:14,883 INFO L226 Difference]: Without dead ends: 8705 [2023-12-19 07:35:14,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:35:14,911 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1594 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:14,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 2440 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:35:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2023-12-19 07:35:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 8699. [2023-12-19 07:35:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8699 states, 6450 states have (on average 1.6052713178294573) internal successors, (10354), 6474 states have internal predecessors, (10354), 2184 states have call successors, (2184), 64 states have call predecessors, (2184), 64 states have return successors, (2184), 2160 states have call predecessors, (2184), 2184 states have call successors, (2184) [2023-12-19 07:35:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8699 states to 8699 states and 14722 transitions. [2023-12-19 07:35:15,445 INFO L78 Accepts]: Start accepts. Automaton has 8699 states and 14722 transitions. Word has length 731 [2023-12-19 07:35:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:15,446 INFO L495 AbstractCegarLoop]: Abstraction has 8699 states and 14722 transitions. [2023-12-19 07:35:15,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8699 states and 14722 transitions. [2023-12-19 07:35:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:35:15,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:15,455 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:15,467 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 07:35:15,664 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 07:35:15,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:15,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:15,665 INFO L85 PathProgramCache]: Analyzing trace with hash 374075661, now seen corresponding path program 1 times [2023-12-19 07:35:15,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:15,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416707347] [2023-12-19 07:35:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:15,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:15,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936329014] [2023-12-19 07:35:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:15,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:15,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:15,712 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 07:35:15,738 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 07:35:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:16,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:35:16,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 12723 proven. 144 refuted. 0 times theorem prover too weak. 12897 trivial. 0 not checked. [2023-12-19 07:35:16,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 195 proven. 144 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-19 07:35:16,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416707347] [2023-12-19 07:35:16,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936329014] [2023-12-19 07:35:16,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936329014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:16,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:16,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:35:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758475661] [2023-12-19 07:35:16,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:35:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:35:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:35:16,866 INFO L87 Difference]: Start difference. First operand 8699 states and 14722 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-12-19 07:35:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:19,590 INFO L93 Difference]: Finished difference Result 38011 states and 63990 transitions. [2023-12-19 07:35:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 07:35:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) Word has length 731 [2023-12-19 07:35:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:19,700 INFO L225 Difference]: With dead ends: 38011 [2023-12-19 07:35:19,700 INFO L226 Difference]: Without dead ends: 29313 [2023-12-19 07:35:19,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1477 GetRequests, 1452 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=471, Unknown=0, NotChecked=0, Total=702 [2023-12-19 07:35:19,730 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1918 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:19,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 2521 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 07:35:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29313 states. [2023-12-19 07:35:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29313 to 16203. [2023-12-19 07:35:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 12322 states have (on average 1.6154844992695991) internal successors, (19906), 12378 states have internal predecessors, (19906), 3768 states have call successors, (3768), 112 states have call predecessors, (3768), 112 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-19 07:35:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 27442 transitions. [2023-12-19 07:35:21,020 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 27442 transitions. Word has length 731 [2023-12-19 07:35:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:21,021 INFO L495 AbstractCegarLoop]: Abstraction has 16203 states and 27442 transitions. [2023-12-19 07:35:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-12-19 07:35:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 27442 transitions. [2023-12-19 07:35:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-19 07:35:21,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:21,036 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:21,050 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 07:35:21,248 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 07:35:21,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:21,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1316781727, now seen corresponding path program 1 times [2023-12-19 07:35:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100626740] [2023-12-19 07:35:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:21,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:21,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109083883] [2023-12-19 07:35:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:21,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:21,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:21,445 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 07:35:21,447 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 07:35:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:21,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:35:21,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 14393 proven. 159 refuted. 0 times theorem prover too weak. 11212 trivial. 0 not checked. [2023-12-19 07:35:22,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 180 proven. 159 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-19 07:35:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100626740] [2023-12-19 07:35:22,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109083883] [2023-12-19 07:35:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109083883] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:22,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:22,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:35:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968822077] [2023-12-19 07:35:22,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:22,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:35:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:35:22,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:35:22,824 INFO L87 Difference]: Start difference. First operand 16203 states and 27442 transitions. Second operand has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-12-19 07:35:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:24,050 INFO L93 Difference]: Finished difference Result 32821 states and 55235 transitions. [2023-12-19 07:35:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:35:24,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) Word has length 732 [2023-12-19 07:35:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:24,108 INFO L225 Difference]: With dead ends: 32821 [2023-12-19 07:35:24,108 INFO L226 Difference]: Without dead ends: 16619 [2023-12-19 07:35:24,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1454 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-12-19 07:35:24,149 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 366 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1140 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:35:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16619 states. [2023-12-19 07:35:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16619 to 16459. [2023-12-19 07:35:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16459 states, 12514 states have (on average 1.5999680357999042) internal successors, (20022), 12570 states have internal predecessors, (20022), 3768 states have call successors, (3768), 176 states have call predecessors, (3768), 176 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-19 07:35:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16459 states to 16459 states and 27558 transitions. [2023-12-19 07:35:25,197 INFO L78 Accepts]: Start accepts. Automaton has 16459 states and 27558 transitions. Word has length 732 [2023-12-19 07:35:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:25,197 INFO L495 AbstractCegarLoop]: Abstraction has 16459 states and 27558 transitions. [2023-12-19 07:35:25,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-12-19 07:35:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 16459 states and 27558 transitions. [2023-12-19 07:35:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-19 07:35:25,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:25,210 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:25,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 07:35:25,429 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 07:35:25,429 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:25,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash -429558881, now seen corresponding path program 1 times [2023-12-19 07:35:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529877467] [2023-12-19 07:35:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:25,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:25,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538082961] [2023-12-19 07:35:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:25,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:25,493 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 07:35:25,494 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 07:35:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:25,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:35:25,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 11805 proven. 117 refuted. 0 times theorem prover too weak. 13842 trivial. 0 not checked. [2023-12-19 07:35:26,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 222 proven. 117 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-19 07:35:26,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529877467] [2023-12-19 07:35:26,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538082961] [2023-12-19 07:35:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538082961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:26,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:26,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:35:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210373512] [2023-12-19 07:35:26,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:35:26,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:26,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:35:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:35:26,512 INFO L87 Difference]: Start difference. First operand 16459 states and 27558 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-19 07:35:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:27,858 INFO L93 Difference]: Finished difference Result 29445 states and 48771 transitions. [2023-12-19 07:35:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:35:27,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 732 [2023-12-19 07:35:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:27,898 INFO L225 Difference]: With dead ends: 29445 [2023-12-19 07:35:27,898 INFO L226 Difference]: Without dead ends: 12987 [2023-12-19 07:35:27,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1456 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 07:35:27,930 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 381 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:27,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1125 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:35:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2023-12-19 07:35:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 12795. [2023-12-19 07:35:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12795 states, 8834 states have (on average 1.5252433778582748) internal successors, (13474), 8890 states have internal predecessors, (13474), 3768 states have call successors, (3768), 192 states have call predecessors, (3768), 192 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-19 07:35:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12795 states to 12795 states and 21010 transitions. [2023-12-19 07:35:28,968 INFO L78 Accepts]: Start accepts. Automaton has 12795 states and 21010 transitions. Word has length 732 [2023-12-19 07:35:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:28,969 INFO L495 AbstractCegarLoop]: Abstraction has 12795 states and 21010 transitions. [2023-12-19 07:35:28,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-19 07:35:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 12795 states and 21010 transitions. [2023-12-19 07:35:28,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 07:35:28,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:28,979 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:29,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 07:35:29,187 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 07:35:29,188 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:29,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2144558333, now seen corresponding path program 1 times [2023-12-19 07:35:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030351780] [2023-12-19 07:35:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:29,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:29,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:29,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379050834] [2023-12-19 07:35:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:29,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:29,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:29,235 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 07:35:29,272 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 07:35:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:29,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:35:29,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 7445 proven. 57 refuted. 0 times theorem prover too weak. 18262 trivial. 0 not checked. [2023-12-19 07:35:29,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 282 proven. 57 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-19 07:35:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030351780] [2023-12-19 07:35:30,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379050834] [2023-12-19 07:35:30,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379050834] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:30,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:30,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:35:30,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289435384] [2023-12-19 07:35:30,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:30,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:35:30,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:35:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:35:30,154 INFO L87 Difference]: Start difference. First operand 12795 states and 21010 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-19 07:35:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:31,392 INFO L93 Difference]: Finished difference Result 25829 states and 42251 transitions. [2023-12-19 07:35:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:35:31,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 733 [2023-12-19 07:35:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:31,448 INFO L225 Difference]: With dead ends: 25829 [2023-12-19 07:35:31,448 INFO L226 Difference]: Without dead ends: 13035 [2023-12-19 07:35:31,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1458 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 07:35:31,478 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 626 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:31,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1138 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:35:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13035 states. [2023-12-19 07:35:32,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13035 to 12827. [2023-12-19 07:35:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 8858 states have (on average 1.516595168209528) internal successors, (13434), 8914 states have internal predecessors, (13434), 3768 states have call successors, (3768), 200 states have call predecessors, (3768), 200 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-19 07:35:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 20970 transitions. [2023-12-19 07:35:32,593 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 20970 transitions. Word has length 733 [2023-12-19 07:35:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:32,594 INFO L495 AbstractCegarLoop]: Abstraction has 12827 states and 20970 transitions. [2023-12-19 07:35:32,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-19 07:35:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 20970 transitions. [2023-12-19 07:35:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 07:35:32,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:32,607 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:32,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:35:32,817 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 07:35:32,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:32,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2009860353, now seen corresponding path program 1 times [2023-12-19 07:35:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:32,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567410233] [2023-12-19 07:35:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:32,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:32,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:32,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216380635] [2023-12-19 07:35:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:32,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:32,869 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 07:35:32,892 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 07:35:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:33,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:35:33,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:33,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567410233] [2023-12-19 07:35:33,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216380635] [2023-12-19 07:35:33,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216380635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:33,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:35:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921307249] [2023-12-19 07:35:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:35:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:35:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:35:33,292 INFO L87 Difference]: Start difference. First operand 12827 states and 20970 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:35,062 INFO L93 Difference]: Finished difference Result 34647 states and 56100 transitions. [2023-12-19 07:35:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:35:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-19 07:35:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:35,125 INFO L225 Difference]: With dead ends: 34647 [2023-12-19 07:35:35,125 INFO L226 Difference]: Without dead ends: 21757 [2023-12-19 07:35:35,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 730 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 07:35:35,153 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 310 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:35,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 2002 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:35:35,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21757 states. [2023-12-19 07:35:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21757 to 21747. [2023-12-19 07:35:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21747 states, 13986 states have (on average 1.4484484484484486) internal successors, (20258), 14106 states have internal predecessors, (20258), 7368 states have call successors, (7368), 392 states have call predecessors, (7368), 392 states have return successors, (7368), 7248 states have call predecessors, (7368), 7368 states have call successors, (7368) [2023-12-19 07:35:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21747 states to 21747 states and 34994 transitions. [2023-12-19 07:35:36,986 INFO L78 Accepts]: Start accepts. Automaton has 21747 states and 34994 transitions. Word has length 733 [2023-12-19 07:35:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:36,987 INFO L495 AbstractCegarLoop]: Abstraction has 21747 states and 34994 transitions. [2023-12-19 07:35:36,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 21747 states and 34994 transitions. [2023-12-19 07:35:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 07:35:36,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:36,998 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:37,006 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 07:35:37,205 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 07:35:37,206 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:37,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1947820739, now seen corresponding path program 1 times [2023-12-19 07:35:37,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:37,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809096480] [2023-12-19 07:35:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:37,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:37,254 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:37,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707983581] [2023-12-19 07:35:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:37,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:37,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:37,255 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 07:35:37,258 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 07:35:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:37,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:35:37,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:38,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:38,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809096480] [2023-12-19 07:35:38,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707983581] [2023-12-19 07:35:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707983581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:38,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:38,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 07:35:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083280538] [2023-12-19 07:35:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:38,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:35:38,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:35:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:35:38,449 INFO L87 Difference]: Start difference. First operand 21747 states and 34994 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:45,940 INFO L93 Difference]: Finished difference Result 89965 states and 144173 transitions. [2023-12-19 07:35:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 07:35:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-19 07:35:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:46,204 INFO L225 Difference]: With dead ends: 89965 [2023-12-19 07:35:46,204 INFO L226 Difference]: Without dead ends: 67243 [2023-12-19 07:35:46,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:35:46,273 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2019 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:46,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 3710 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1199 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 07:35:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67243 states. [2023-12-19 07:35:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67243 to 35955. [2023-12-19 07:35:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35955 states, 24194 states have (on average 1.477473753823262) internal successors, (35746), 24370 states have internal predecessors, (35746), 11152 states have call successors, (11152), 608 states have call predecessors, (11152), 608 states have return successors, (11152), 10976 states have call predecessors, (11152), 11152 states have call successors, (11152) [2023-12-19 07:35:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35955 states to 35955 states and 58050 transitions. [2023-12-19 07:35:51,209 INFO L78 Accepts]: Start accepts. Automaton has 35955 states and 58050 transitions. Word has length 733 [2023-12-19 07:35:51,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:51,211 INFO L495 AbstractCegarLoop]: Abstraction has 35955 states and 58050 transitions. [2023-12-19 07:35:51,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:51,211 INFO L276 IsEmpty]: Start isEmpty. Operand 35955 states and 58050 transitions. [2023-12-19 07:35:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 07:35:51,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:51,230 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:51,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:35:51,446 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 07:35:51,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:51,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash 977586109, now seen corresponding path program 1 times [2023-12-19 07:35:51,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:51,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357607359] [2023-12-19 07:35:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:51,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:51,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:51,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50106256] [2023-12-19 07:35:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:51,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:51,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:51,543 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 07:35:51,560 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 07:35:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:51,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:35:51,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:35:52,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:35:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357607359] [2023-12-19 07:35:52,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50106256] [2023-12-19 07:35:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50106256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:35:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:35:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:35:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55974723] [2023-12-19 07:35:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:35:52,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:35:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:52,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:35:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:35:52,034 INFO L87 Difference]: Start difference. First operand 35955 states and 58050 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:55,216 INFO L93 Difference]: Finished difference Result 72815 states and 117780 transitions. [2023-12-19 07:35:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:35:55,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-19 07:35:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:55,339 INFO L225 Difference]: With dead ends: 72815 [2023-12-19 07:35:55,339 INFO L226 Difference]: Without dead ends: 36749 [2023-12-19 07:35:55,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 731 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 07:35:55,449 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 546 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:55,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1613 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:35:55,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36749 states. [2023-12-19 07:35:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36749 to 36283. [2023-12-19 07:35:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36283 states, 24522 states have (on average 1.4776119402985075) internal successors, (36234), 24698 states have internal predecessors, (36234), 11152 states have call successors, (11152), 608 states have call predecessors, (11152), 608 states have return successors, (11152), 10976 states have call predecessors, (11152), 11152 states have call successors, (11152) [2023-12-19 07:35:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36283 states to 36283 states and 58538 transitions. [2023-12-19 07:35:59,102 INFO L78 Accepts]: Start accepts. Automaton has 36283 states and 58538 transitions. Word has length 733 [2023-12-19 07:35:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:59,103 INFO L495 AbstractCegarLoop]: Abstraction has 36283 states and 58538 transitions. [2023-12-19 07:35:59,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:35:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 36283 states and 58538 transitions. [2023-12-19 07:35:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 07:35:59,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:59,118 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:59,130 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 07:35:59,327 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 07:35:59,328 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:59,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1111599615, now seen corresponding path program 1 times [2023-12-19 07:35:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:59,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488344030] [2023-12-19 07:35:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:59,570 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:59,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875574906] [2023-12-19 07:35:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:59,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:59,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:59,572 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 07:35:59,603 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 07:35:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:59,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:36:00,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:36:01,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:01,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:01,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488344030] [2023-12-19 07:36:01,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:01,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875574906] [2023-12-19 07:36:01,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875574906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:01,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:01,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:36:01,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824887746] [2023-12-19 07:36:01,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:01,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:36:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:36:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:01,307 INFO L87 Difference]: Start difference. First operand 36283 states and 58538 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:36:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:05,679 INFO L93 Difference]: Finished difference Result 86862 states and 140459 transitions. [2023-12-19 07:36:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:36:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-19 07:36:05,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:05,828 INFO L225 Difference]: With dead ends: 86862 [2023-12-19 07:36:05,828 INFO L226 Difference]: Without dead ends: 50580 [2023-12-19 07:36:05,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:05,923 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 987 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:05,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1527 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:36:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50580 states. [2023-12-19 07:36:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50580 to 50072. [2023-12-19 07:36:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50072 states, 34201 states have (on average 1.4856875529955265) internal successors, (50812), 34433 states have internal predecessors, (50812), 15042 states have call successors, (15042), 828 states have call predecessors, (15042), 828 states have return successors, (15042), 14810 states have call predecessors, (15042), 15042 states have call successors, (15042) [2023-12-19 07:36:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50072 states to 50072 states and 80896 transitions. [2023-12-19 07:36:11,000 INFO L78 Accepts]: Start accepts. Automaton has 50072 states and 80896 transitions. Word has length 733 [2023-12-19 07:36:11,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:11,001 INFO L495 AbstractCegarLoop]: Abstraction has 50072 states and 80896 transitions. [2023-12-19 07:36:11,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:36:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 50072 states and 80896 transitions. [2023-12-19 07:36:11,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 07:36:11,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:11,020 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:11,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:11,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 07:36:11,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:11,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1322179261, now seen corresponding path program 1 times [2023-12-19 07:36:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:11,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959134002] [2023-12-19 07:36:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:11,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:11,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272453954] [2023-12-19 07:36:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:11,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:11,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:11,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:11,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:36:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:11,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:36:11,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-19 07:36:11,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959134002] [2023-12-19 07:36:11,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272453954] [2023-12-19 07:36:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272453954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:11,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:36:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343188003] [2023-12-19 07:36:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:36:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:36:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:11,841 INFO L87 Difference]: Start difference. First operand 50072 states and 80896 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:36:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:19,123 INFO L93 Difference]: Finished difference Result 130470 states and 212030 transitions. [2023-12-19 07:36:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:36:19,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-19 07:36:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:19,323 INFO L225 Difference]: With dead ends: 130470 [2023-12-19 07:36:19,324 INFO L226 Difference]: Without dead ends: 80808 [2023-12-19 07:36:19,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:19,418 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 318 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:19,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 2152 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:36:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80808 states. [2023-12-19 07:36:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80808 to 80525. [2023-12-19 07:36:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80525 states, 60558 states have (on average 1.5477723835001156) internal successors, (93730), 61046 states have internal predecessors, (93730), 18882 states have call successors, (18882), 1084 states have call predecessors, (18882), 1084 states have return successors, (18882), 18394 states have call predecessors, (18882), 18882 states have call successors, (18882) [2023-12-19 07:36:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80525 states to 80525 states and 131494 transitions. [2023-12-19 07:36:26,836 INFO L78 Accepts]: Start accepts. Automaton has 80525 states and 131494 transitions. Word has length 733 [2023-12-19 07:36:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:26,837 INFO L495 AbstractCegarLoop]: Abstraction has 80525 states and 131494 transitions. [2023-12-19 07:36:26,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-19 07:36:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 80525 states and 131494 transitions. [2023-12-19 07:36:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-19 07:36:26,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:26,861 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:26,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:36:27,070 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:27,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1066384769, now seen corresponding path program 1 times [2023-12-19 07:36:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:27,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329289233] [2023-12-19 07:36:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:27,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:27,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379257385] [2023-12-19 07:36:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:27,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:27,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:27,126 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:27,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:36:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:27,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:36:27,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 2927 proven. 18 refuted. 0 times theorem prover too weak. 22819 trivial. 0 not checked. [2023-12-19 07:36:28,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:36:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 321 proven. 18 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-19 07:36:28,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:28,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329289233] [2023-12-19 07:36:28,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:28,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379257385] [2023-12-19 07:36:28,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379257385] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:36:28,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:36:28,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:36:28,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101204490] [2023-12-19 07:36:28,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:36:28,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:36:28,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:28,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:36:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:36:28,514 INFO L87 Difference]: Start difference. First operand 80525 states and 131494 transitions. Second operand has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) [2023-12-19 07:36:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:37,044 INFO L93 Difference]: Finished difference Result 161703 states and 262901 transitions. [2023-12-19 07:36:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:36:37,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) Word has length 733 [2023-12-19 07:36:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:37,474 INFO L225 Difference]: With dead ends: 161703 [2023-12-19 07:36:37,474 INFO L226 Difference]: Without dead ends: 82113 [2023-12-19 07:36:37,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1456 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-12-19 07:36:37,612 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 673 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:37,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1144 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:36:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82113 states. [2023-12-19 07:36:45,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82113 to 80725. [2023-12-19 07:36:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80725 states, 60708 states have (on average 1.5400935626276602) internal successors, (93496), 61196 states have internal predecessors, (93496), 18882 states have call successors, (18882), 1134 states have call predecessors, (18882), 1134 states have return successors, (18882), 18394 states have call predecessors, (18882), 18882 states have call successors, (18882) [2023-12-19 07:36:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80725 states to 80725 states and 131260 transitions. [2023-12-19 07:36:45,974 INFO L78 Accepts]: Start accepts. Automaton has 80725 states and 131260 transitions. Word has length 733 [2023-12-19 07:36:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:45,975 INFO L495 AbstractCegarLoop]: Abstraction has 80725 states and 131260 transitions. [2023-12-19 07:36:45,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) [2023-12-19 07:36:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 80725 states and 131260 transitions. [2023-12-19 07:36:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-12-19 07:36:46,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:46,008 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:46,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:46,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:46,412 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:46,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1098327253, now seen corresponding path program 1 times [2023-12-19 07:36:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:46,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738007455] [2023-12-19 07:36:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:46,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:46,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:46,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43324566] [2023-12-19 07:36:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:46,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:46,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:46,489 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:46,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 07:36:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:47,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 07:36:47,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 13460 proven. 219 refuted. 0 times theorem prover too weak. 12085 trivial. 0 not checked. [2023-12-19 07:36:48,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:36:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 120 proven. 219 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-19 07:36:49,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738007455] [2023-12-19 07:36:49,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43324566] [2023-12-19 07:36:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43324566] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:36:49,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:36:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2023-12-19 07:36:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016030514] [2023-12-19 07:36:49,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:36:49,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 07:36:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 07:36:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:36:49,954 INFO L87 Difference]: Start difference. First operand 80725 states and 131260 transitions. Second operand has 18 states, 18 states have (on average 15.833333333333334) internal successors, (285), 18 states have internal predecessors, (285), 5 states have call successors, (205), 3 states have call predecessors, (205), 5 states have return successors, (205), 5 states have call predecessors, (205), 5 states have call successors, (205)