/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-53.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:09:29,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:09:29,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:09:29,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:09:29,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:09:29,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:09:29,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:09:29,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:09:29,694 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:09:29,694 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:09:29,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:09:29,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:09:29,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:09:29,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:09:29,695 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:09:29,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:09:29,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:09:29,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:09:29,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:09:29,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:09:29,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:09:29,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:09:29,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:09:29,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:09:29,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:09:29,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:09:29,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:09:29,707 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:09:29,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:09:29,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:09:29,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:09:29,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:09:29,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:09:29,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:09:29,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:09:29,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:09:29,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:09:29,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:09:29,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:09:29,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:09:29,710 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:09:29,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:09:29,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:09:29,711 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:09:29,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:09:29,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:09:29,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:09:29,895 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:09:29,895 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:09:29,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-53.i [2023-12-16 04:09:30,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:09:31,251 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:09:31,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-53.i [2023-12-16 04:09:31,269 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7cf7a15/f7d2769b3ee3400f8eb1ba091f0ac8c2/FLAGab27b7df3 [2023-12-16 04:09:31,291 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7cf7a15/f7d2769b3ee3400f8eb1ba091f0ac8c2 [2023-12-16 04:09:31,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:09:31,295 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:09:31,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:09:31,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:09:31,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:09:31,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:31,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2010d150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31, skipping insertion in model container [2023-12-16 04:09:31,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:31,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:09:31,520 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_operatoramount_amount500_file-53.i[916,929] [2023-12-16 04:09:31,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:09:31,791 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:09:31,799 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_operatoramount_amount500_file-53.i[916,929] [2023-12-16 04:09:31,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:09:31,910 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:09:31,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31 WrapperNode [2023-12-16 04:09:31,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:09:31,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:09:31,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:09:31,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:09:31,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:31,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,043 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 588 [2023-12-16 04:09:32,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:09:32,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:09:32,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:09:32,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:09:32,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,119 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]. [2023-12-16 04:09:32,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:09:32,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:09:32,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:09:32,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:09:32,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (1/1) ... [2023-12-16 04:09:32,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:09:32,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:32,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:09:32,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:09:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:09:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:09:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:09:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:09:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:09:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:09:32,404 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:09:32,406 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:09:33,184 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:09:33,263 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:09:33,263 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:09:33,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:09:33 BoogieIcfgContainer [2023-12-16 04:09:33,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:09:33,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:09:33,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:09:33,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:09:33,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:09:31" (1/3) ... [2023-12-16 04:09:33,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f918963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:09:33, skipping insertion in model container [2023-12-16 04:09:33,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:31" (2/3) ... [2023-12-16 04:09:33,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f918963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:09:33, skipping insertion in model container [2023-12-16 04:09:33,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:09:33" (3/3) ... [2023-12-16 04:09:33,273 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-53.i [2023-12-16 04:09:33,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:09:33,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:09:33,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:09:33,339 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;@1b3e3cf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:09:33,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:09:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 158 states have (on average 1.6012658227848102) internal successors, (253), 159 states have internal predecessors, (253), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-16 04:09:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:33,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:33,368 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:33,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:33,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1652100944, now seen corresponding path program 1 times [2023-12-16 04:09:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:33,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357221116] [2023-12-16 04:09:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:33,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:33,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357221116] [2023-12-16 04:09:33,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:09:33,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875184554] [2023-12-16 04:09:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:33,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:33,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:33,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:33,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:09:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:34,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:09:34,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2023-12-16 04:09:34,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:34,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875184554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:34,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:34,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:09:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907529957] [2023-12-16 04:09:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:34,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:09:34,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:34,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:09:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:09:34,260 INFO L87 Difference]: Start difference. First operand has 228 states, 158 states have (on average 1.6012658227848102) internal successors, (253), 159 states have internal predecessors, (253), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-16 04:09:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:34,344 INFO L93 Difference]: Finished difference Result 453 states and 839 transitions. [2023-12-16 04:09:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:09:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 450 [2023-12-16 04:09:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:34,354 INFO L225 Difference]: With dead ends: 453 [2023-12-16 04:09:34,354 INFO L226 Difference]: Without dead ends: 226 [2023-12-16 04:09:34,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:09:34,360 INFO L413 NwaCegarLoop]: 379 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, 379 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:34,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 379 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:09:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-16 04:09:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2023-12-16 04:09:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 157 states have (on average 1.5796178343949046) internal successors, (248), 157 states have internal predecessors, (248), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-16 04:09:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 382 transitions. [2023-12-16 04:09:34,406 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 382 transitions. Word has length 450 [2023-12-16 04:09:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:34,407 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 382 transitions. [2023-12-16 04:09:34,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-16 04:09:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 382 transitions. [2023-12-16 04:09:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:34,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:34,414 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:34,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:34,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 04:09:34,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:34,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2095198282, now seen corresponding path program 1 times [2023-12-16 04:09:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532463457] [2023-12-16 04:09:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:34,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:34,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:34,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009218070] [2023-12-16 04:09:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:34,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:34,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:34,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:34,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:09:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:35,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:09:35,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:09:35,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:35,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532463457] [2023-12-16 04:09:35,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:35,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009218070] [2023-12-16 04:09:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009218070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:35,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:35,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:09:35,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077260876] [2023-12-16 04:09:35,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:09:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:09:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:35,234 INFO L87 Difference]: Start difference. First operand 226 states and 382 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:35,325 INFO L93 Difference]: Finished difference Result 584 states and 988 transitions. [2023-12-16 04:09:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:09:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 450 [2023-12-16 04:09:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:35,329 INFO L225 Difference]: With dead ends: 584 [2023-12-16 04:09:35,329 INFO L226 Difference]: Without dead ends: 359 [2023-12-16 04:09:35,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:35,330 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 204 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:35,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 739 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:09:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-16 04:09:35,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 356. [2023-12-16 04:09:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 260 states have (on average 1.603846153846154) internal successors, (417), 261 states have internal predecessors, (417), 93 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 04:09:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 603 transitions. [2023-12-16 04:09:35,358 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 603 transitions. Word has length 450 [2023-12-16 04:09:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:35,359 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 603 transitions. [2023-12-16 04:09:35,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 603 transitions. [2023-12-16 04:09:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:35,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:35,363 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:35,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:35,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 04:09:35,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:35,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash 273016438, now seen corresponding path program 1 times [2023-12-16 04:09:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:35,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963287303] [2023-12-16 04:09:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:35,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:35,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121600886] [2023-12-16 04:09:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:35,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:35,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:35,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:35,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:09:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:36,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:09:36,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:09:36,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:36,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963287303] [2023-12-16 04:09:36,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121600886] [2023-12-16 04:09:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121600886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:36,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:09:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661267951] [2023-12-16 04:09:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:09:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:09:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:36,062 INFO L87 Difference]: Start difference. First operand 356 states and 603 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:36,183 INFO L93 Difference]: Finished difference Result 1064 states and 1803 transitions. [2023-12-16 04:09:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:09:36,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 450 [2023-12-16 04:09:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:36,190 INFO L225 Difference]: With dead ends: 1064 [2023-12-16 04:09:36,190 INFO L226 Difference]: Without dead ends: 709 [2023-12-16 04:09:36,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:36,192 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 365 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:36,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1087 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:09:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-12-16 04:09:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 705. [2023-12-16 04:09:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 514 states have (on average 1.5914396887159532) internal successors, (818), 516 states have internal predecessors, (818), 186 states have call successors, (186), 4 states have call predecessors, (186), 4 states have return successors, (186), 184 states have call predecessors, (186), 186 states have call successors, (186) [2023-12-16 04:09:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1190 transitions. [2023-12-16 04:09:36,268 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1190 transitions. Word has length 450 [2023-12-16 04:09:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:36,269 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 1190 transitions. [2023-12-16 04:09:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1190 transitions. [2023-12-16 04:09:36,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:36,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:36,273 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:36,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:36,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:36,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:36,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1970966860, now seen corresponding path program 1 times [2023-12-16 04:09:36,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:36,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836151382] [2023-12-16 04:09:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:36,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:36,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474968078] [2023-12-16 04:09:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:36,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:36,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:36,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:36,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:09:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:36,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:09:36,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:09:36,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:36,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:36,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836151382] [2023-12-16 04:09:36,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:36,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474968078] [2023-12-16 04:09:36,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474968078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:36,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:36,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:09:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078054687] [2023-12-16 04:09:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:36,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:09:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:09:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:36,933 INFO L87 Difference]: Start difference. First operand 705 states and 1190 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:37,021 INFO L93 Difference]: Finished difference Result 2105 states and 3552 transitions. [2023-12-16 04:09:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:09:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 450 [2023-12-16 04:09:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:37,030 INFO L225 Difference]: With dead ends: 2105 [2023-12-16 04:09:37,030 INFO L226 Difference]: Without dead ends: 1401 [2023-12-16 04:09:37,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:37,033 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 357 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:37,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1065 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:09:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-16 04:09:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1399. [2023-12-16 04:09:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1018 states have (on average 1.5776031434184676) internal successors, (1606), 1022 states have internal predecessors, (1606), 372 states have call successors, (372), 8 states have call predecessors, (372), 8 states have return successors, (372), 368 states have call predecessors, (372), 372 states have call successors, (372) [2023-12-16 04:09:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2350 transitions. [2023-12-16 04:09:37,153 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2350 transitions. Word has length 450 [2023-12-16 04:09:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:37,154 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 2350 transitions. [2023-12-16 04:09:37,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:37,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2350 transitions. [2023-12-16 04:09:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:37,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:37,158 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:37,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:37,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:37,365 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:37,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1929633650, now seen corresponding path program 1 times [2023-12-16 04:09:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:37,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681761057] [2023-12-16 04:09:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:37,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:37,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:37,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642788611] [2023-12-16 04:09:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:37,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:37,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:37,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:37,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:09:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:37,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:09:37,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:09:38,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681761057] [2023-12-16 04:09:38,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:38,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642788611] [2023-12-16 04:09:38,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642788611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:38,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:38,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:09:38,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846866945] [2023-12-16 04:09:38,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:38,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:09:38,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:38,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:09:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:09:38,576 INFO L87 Difference]: Start difference. First operand 1399 states and 2350 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:38,688 INFO L93 Difference]: Finished difference Result 3493 states and 5872 transitions. [2023-12-16 04:09:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:09:38,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 450 [2023-12-16 04:09:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:38,697 INFO L225 Difference]: With dead ends: 3493 [2023-12-16 04:09:38,698 INFO L226 Difference]: Without dead ends: 2095 [2023-12-16 04:09:38,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:09:38,702 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 193 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:38,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1114 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:09:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2023-12-16 04:09:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2093. [2023-12-16 04:09:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 1522 states have (on average 1.57161629434954) internal successors, (2392), 1528 states have internal predecessors, (2392), 558 states have call successors, (558), 12 states have call predecessors, (558), 12 states have return successors, (558), 552 states have call predecessors, (558), 558 states have call successors, (558) [2023-12-16 04:09:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 3508 transitions. [2023-12-16 04:09:38,806 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 3508 transitions. Word has length 450 [2023-12-16 04:09:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:38,807 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 3508 transitions. [2023-12-16 04:09:38,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 3508 transitions. [2023-12-16 04:09:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:38,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:38,811 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:38,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:39,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:39,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:39,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2006534448, now seen corresponding path program 1 times [2023-12-16 04:09:39,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:39,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804731749] [2023-12-16 04:09:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:39,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:39,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:39,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953038465] [2023-12-16 04:09:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:39,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:39,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:39,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:39,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:09:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:39,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:09:39,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:09:39,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:39,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:39,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804731749] [2023-12-16 04:09:39,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:39,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953038465] [2023-12-16 04:09:39,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953038465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:39,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:39,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:09:39,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730940534] [2023-12-16 04:09:39,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:39,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:09:39,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:09:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:09:39,411 INFO L87 Difference]: Start difference. First operand 2093 states and 3508 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:39,805 INFO L93 Difference]: Finished difference Result 6313 states and 10474 transitions. [2023-12-16 04:09:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:09:39,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 450 [2023-12-16 04:09:39,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:39,823 INFO L225 Difference]: With dead ends: 6313 [2023-12-16 04:09:39,823 INFO L226 Difference]: Without dead ends: 4221 [2023-12-16 04:09:39,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:09:39,831 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 616 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:39,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 779 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:09:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2023-12-16 04:09:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 2537. [2023-12-16 04:09:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1954 states have (on average 1.5670419651995906) internal successors, (3062), 1960 states have internal predecessors, (3062), 558 states have call successors, (558), 24 states have call predecessors, (558), 24 states have return successors, (558), 552 states have call predecessors, (558), 558 states have call successors, (558) [2023-12-16 04:09:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 4178 transitions. [2023-12-16 04:09:40,057 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 4178 transitions. Word has length 450 [2023-12-16 04:09:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:40,057 INFO L495 AbstractCegarLoop]: Abstraction has 2537 states and 4178 transitions. [2023-12-16 04:09:40,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 4178 transitions. [2023-12-16 04:09:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:40,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:40,062 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:40,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:40,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:40,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:40,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash 646481968, now seen corresponding path program 1 times [2023-12-16 04:09:40,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:40,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582273973] [2023-12-16 04:09:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:40,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:40,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114448873] [2023-12-16 04:09:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:40,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:40,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:40,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:40,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:09:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:40,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:09:40,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:09:40,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:40,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:40,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582273973] [2023-12-16 04:09:40,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:40,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114448873] [2023-12-16 04:09:40,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114448873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:40,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:40,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:09:40,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758963759] [2023-12-16 04:09:40,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:40,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:09:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:40,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:09:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:09:40,694 INFO L87 Difference]: Start difference. First operand 2537 states and 4178 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:41,172 INFO L93 Difference]: Finished difference Result 10005 states and 16488 transitions. [2023-12-16 04:09:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:09:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 450 [2023-12-16 04:09:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:41,195 INFO L225 Difference]: With dead ends: 10005 [2023-12-16 04:09:41,195 INFO L226 Difference]: Without dead ends: 6941 [2023-12-16 04:09:41,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:09:41,201 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 821 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:41,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1245 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:09:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2023-12-16 04:09:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 3893. [2023-12-16 04:09:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3310 states have (on average 1.5803625377643504) internal successors, (5231), 3316 states have internal predecessors, (5231), 558 states have call successors, (558), 24 states have call predecessors, (558), 24 states have return successors, (558), 552 states have call predecessors, (558), 558 states have call successors, (558) [2023-12-16 04:09:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 6347 transitions. [2023-12-16 04:09:41,392 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 6347 transitions. Word has length 450 [2023-12-16 04:09:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:41,392 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 6347 transitions. [2023-12-16 04:09:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:09:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 6347 transitions. [2023-12-16 04:09:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:41,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:41,397 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:41,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:41,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:41,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:41,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1367399190, now seen corresponding path program 1 times [2023-12-16 04:09:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:41,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152579928] [2023-12-16 04:09:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:41,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:41,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771754005] [2023-12-16 04:09:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:41,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:41,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:41,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:41,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:09:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:41,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:09:41,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 1518 proven. 180 refuted. 0 times theorem prover too weak. 7146 trivial. 0 not checked. [2023-12-16 04:09:42,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 18 proven. 180 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 04:09:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152579928] [2023-12-16 04:09:42,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771754005] [2023-12-16 04:09:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771754005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:42,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 04:09:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842098821] [2023-12-16 04:09:42,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:42,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:09:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:42,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:09:42,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:09:42,530 INFO L87 Difference]: Start difference. First operand 3893 states and 6347 transitions. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) [2023-12-16 04:09:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:42,954 INFO L93 Difference]: Finished difference Result 7743 states and 12545 transitions. [2023-12-16 04:09:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:09:42,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) Word has length 450 [2023-12-16 04:09:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:42,973 INFO L225 Difference]: With dead ends: 7743 [2023-12-16 04:09:42,973 INFO L226 Difference]: Without dead ends: 3851 [2023-12-16 04:09:42,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 892 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:09:42,982 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 361 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:42,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 751 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:09:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2023-12-16 04:09:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3815. [2023-12-16 04:09:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3220 states have (on average 1.5506211180124223) internal successors, (4993), 3226 states have internal predecessors, (4993), 558 states have call successors, (558), 36 states have call predecessors, (558), 36 states have return successors, (558), 552 states have call predecessors, (558), 558 states have call successors, (558) [2023-12-16 04:09:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 6109 transitions. [2023-12-16 04:09:43,135 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 6109 transitions. Word has length 450 [2023-12-16 04:09:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:43,136 INFO L495 AbstractCegarLoop]: Abstraction has 3815 states and 6109 transitions. [2023-12-16 04:09:43,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) [2023-12-16 04:09:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 6109 transitions. [2023-12-16 04:09:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:43,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:43,141 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:43,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:43,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 04:09:43,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:43,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1848479448, now seen corresponding path program 1 times [2023-12-16 04:09:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654203652] [2023-12-16 04:09:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:43,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:43,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:43,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795399766] [2023-12-16 04:09:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:43,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:43,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:43,395 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:43,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:09:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:43,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:09:43,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4146 proven. 126 refuted. 0 times theorem prover too weak. 4572 trivial. 0 not checked. [2023-12-16 04:09:44,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 72 proven. 126 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 04:09:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654203652] [2023-12-16 04:09:44,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795399766] [2023-12-16 04:09:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795399766] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:44,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:44,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:09:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217322008] [2023-12-16 04:09:44,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:44,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:09:44,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:09:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:09:44,363 INFO L87 Difference]: Start difference. First operand 3815 states and 6109 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-16 04:09:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:44,760 INFO L93 Difference]: Finished difference Result 6915 states and 11013 transitions. [2023-12-16 04:09:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:09:44,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 450 [2023-12-16 04:09:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:44,772 INFO L225 Difference]: With dead ends: 6915 [2023-12-16 04:09:44,772 INFO L226 Difference]: Without dead ends: 2723 [2023-12-16 04:09:44,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 892 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:09:44,779 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 363 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:44,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 699 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:09:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2023-12-16 04:09:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2687. [2023-12-16 04:09:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2080 states have (on average 1.4908653846153845) internal successors, (3101), 2086 states have internal predecessors, (3101), 558 states have call successors, (558), 48 states have call predecessors, (558), 48 states have return successors, (558), 552 states have call predecessors, (558), 558 states have call successors, (558) [2023-12-16 04:09:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 4217 transitions. [2023-12-16 04:09:44,899 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 4217 transitions. Word has length 450 [2023-12-16 04:09:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:44,900 INFO L495 AbstractCegarLoop]: Abstraction has 2687 states and 4217 transitions. [2023-12-16 04:09:44,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-16 04:09:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 4217 transitions. [2023-12-16 04:09:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:44,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:44,903 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:44,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:45,111 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:45,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2076444268, now seen corresponding path program 1 times [2023-12-16 04:09:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:45,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293209441] [2023-12-16 04:09:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:45,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543517504] [2023-12-16 04:09:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:45,164 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:45,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:09:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:45,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:09:45,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4416 proven. 111 refuted. 0 times theorem prover too weak. 4317 trivial. 0 not checked. [2023-12-16 04:09:45,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 87 proven. 111 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 04:09:46,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293209441] [2023-12-16 04:09:46,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543517504] [2023-12-16 04:09:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543517504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:46,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:46,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:09:46,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421236305] [2023-12-16 04:09:46,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:46,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:09:46,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:09:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:09:46,089 INFO L87 Difference]: Start difference. First operand 2687 states and 4217 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-16 04:09:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:46,530 INFO L93 Difference]: Finished difference Result 5433 states and 8487 transitions. [2023-12-16 04:09:46,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:09:46,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 450 [2023-12-16 04:09:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:46,556 INFO L225 Difference]: With dead ends: 5433 [2023-12-16 04:09:46,556 INFO L226 Difference]: Without dead ends: 2747 [2023-12-16 04:09:46,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 892 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:09:46,576 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 223 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:46,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 704 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:09:46,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2023-12-16 04:09:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2699. [2023-12-16 04:09:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2086 states have (on average 1.472195589645254) internal successors, (3071), 2092 states have internal predecessors, (3071), 558 states have call successors, (558), 54 states have call predecessors, (558), 54 states have return successors, (558), 552 states have call predecessors, (558), 558 states have call successors, (558) [2023-12-16 04:09:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 4187 transitions. [2023-12-16 04:09:46,734 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 4187 transitions. Word has length 450 [2023-12-16 04:09:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:46,734 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 4187 transitions. [2023-12-16 04:09:46,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-16 04:09:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 4187 transitions. [2023-12-16 04:09:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 04:09:46,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:46,738 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:46,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:46,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:09:46,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:46,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash 860290542, now seen corresponding path program 1 times [2023-12-16 04:09:46,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:46,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734397129] [2023-12-16 04:09:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:46,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:46,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:46,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157956823] [2023-12-16 04:09:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:46,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:46,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:47,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:47,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:09:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:47,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:09:47,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4482 proven. 102 refuted. 0 times theorem prover too weak. 4260 trivial. 0 not checked. [2023-12-16 04:09:47,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 96 proven. 102 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 04:09:48,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:48,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734397129] [2023-12-16 04:09:48,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:48,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157956823] [2023-12-16 04:09:48,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157956823] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:48,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:48,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 04:09:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450406932] [2023-12-16 04:09:48,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:48,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:09:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:09:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:09:48,019 INFO L87 Difference]: Start difference. First operand 2699 states and 4187 transitions. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-12-16 04:09:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:49,071 INFO L93 Difference]: Finished difference Result 8235 states and 12720 transitions. [2023-12-16 04:09:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:09:49,072 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 450 [2023-12-16 04:09:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:49,095 INFO L225 Difference]: With dead ends: 8235 [2023-12-16 04:09:49,096 INFO L226 Difference]: Without dead ends: 5537 [2023-12-16 04:09:49,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:09:49,105 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1147 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:49,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 1214 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:09:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2023-12-16 04:09:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 4549. [2023-12-16 04:09:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 3528 states have (on average 1.4625850340136055) internal successors, (5160), 3546 states have internal predecessors, (5160), 906 states have call successors, (906), 114 states have call predecessors, (906), 114 states have return successors, (906), 888 states have call predecessors, (906), 906 states have call successors, (906) [2023-12-16 04:09:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6972 transitions. [2023-12-16 04:09:49,411 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6972 transitions. Word has length 450 [2023-12-16 04:09:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:49,412 INFO L495 AbstractCegarLoop]: Abstraction has 4549 states and 6972 transitions. [2023-12-16 04:09:49,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-12-16 04:09:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6972 transitions. [2023-12-16 04:09:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-12-16 04:09:49,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:49,417 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:49,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:49,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 04:09:49,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:49,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1956691437, now seen corresponding path program 1 times [2023-12-16 04:09:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473099352] [2023-12-16 04:09:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:49,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:49,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142311998] [2023-12-16 04:09:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:49,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:49,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:49,692 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:49,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:09:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:50,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:09:50,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4152 proven. 288 refuted. 0 times theorem prover too weak. 4404 trivial. 0 not checked. [2023-12-16 04:09:50,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 102 proven. 291 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-16 04:09:51,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:51,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473099352] [2023-12-16 04:09:51,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:51,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142311998] [2023-12-16 04:09:51,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142311998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:51,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:51,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 04:09:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997944929] [2023-12-16 04:09:51,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:51,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:09:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:51,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:09:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:09:51,801 INFO L87 Difference]: Start difference. First operand 4549 states and 6972 transitions. Second operand has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 5 states have call successors, (119), 3 states have call predecessors, (119), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2023-12-16 04:09:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:52,496 INFO L93 Difference]: Finished difference Result 9433 states and 14231 transitions. [2023-12-16 04:09:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:09:52,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 5 states have call successors, (119), 3 states have call predecessors, (119), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) Word has length 451 [2023-12-16 04:09:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:52,510 INFO L225 Difference]: With dead ends: 9433 [2023-12-16 04:09:52,511 INFO L226 Difference]: Without dead ends: 4885 [2023-12-16 04:09:52,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:09:52,520 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 690 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:52,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 852 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:09:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2023-12-16 04:09:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 4741. [2023-12-16 04:09:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4741 states, 3672 states have (on average 1.434640522875817) internal successors, (5268), 3690 states have internal predecessors, (5268), 906 states have call successors, (906), 162 states have call predecessors, (906), 162 states have return successors, (906), 888 states have call predecessors, (906), 906 states have call successors, (906) [2023-12-16 04:09:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 7080 transitions. [2023-12-16 04:09:52,893 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 7080 transitions. Word has length 451 [2023-12-16 04:09:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:52,893 INFO L495 AbstractCegarLoop]: Abstraction has 4741 states and 7080 transitions. [2023-12-16 04:09:52,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 5 states have call successors, (119), 3 states have call predecessors, (119), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2023-12-16 04:09:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 7080 transitions. [2023-12-16 04:09:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-12-16 04:09:52,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:52,898 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:52,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-16 04:09:53,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 04:09:53,133 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:53,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:53,133 INFO L85 PathProgramCache]: Analyzing trace with hash -488703343, now seen corresponding path program 1 times [2023-12-16 04:09:53,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:53,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31268157] [2023-12-16 04:09:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:53,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:53,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916644721] [2023-12-16 04:09:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:53,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:53,175 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:53,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:09:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:53,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:09:53,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4482 proven. 102 refuted. 0 times theorem prover too weak. 4260 trivial. 0 not checked. [2023-12-16 04:09:54,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 96 proven. 102 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 04:09:54,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31268157] [2023-12-16 04:09:54,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916644721] [2023-12-16 04:09:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916644721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:54,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 04:09:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978790574] [2023-12-16 04:09:54,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:54,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:09:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:09:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:09:54,593 INFO L87 Difference]: Start difference. First operand 4741 states and 7080 transitions. Second operand has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-16 04:09:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:56,038 INFO L93 Difference]: Finished difference Result 14461 states and 21501 transitions. [2023-12-16 04:09:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 04:09:56,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) Word has length 451 [2023-12-16 04:09:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:56,065 INFO L225 Difference]: With dead ends: 14461 [2023-12-16 04:09:56,065 INFO L226 Difference]: Without dead ends: 9721 [2023-12-16 04:09:56,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:09:56,079 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1216 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:56,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1630 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:09:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9721 states. [2023-12-16 04:09:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9721 to 4821. [2023-12-16 04:09:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 3712 states have (on average 1.4267241379310345) internal successors, (5296), 3731 states have internal predecessors, (5296), 938 states have call successors, (938), 170 states have call predecessors, (938), 170 states have return successors, (938), 919 states have call predecessors, (938), 938 states have call successors, (938) [2023-12-16 04:09:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7172 transitions. [2023-12-16 04:09:56,592 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7172 transitions. Word has length 451 [2023-12-16 04:09:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:56,592 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 7172 transitions. [2023-12-16 04:09:56,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-16 04:09:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7172 transitions. [2023-12-16 04:09:56,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-16 04:09:56,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:56,597 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:56,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:56,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 04:09:56,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:56,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash -739277767, now seen corresponding path program 1 times [2023-12-16 04:09:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:56,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493766026] [2023-12-16 04:09:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:56,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:56,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722685260] [2023-12-16 04:09:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:56,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:56,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:56,869 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) [2023-12-16 04:09:56,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:09:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:57,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:09:57,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 1118 proven. 378 refuted. 0 times theorem prover too weak. 7348 trivial. 0 not checked. [2023-12-16 04:09:58,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 12 proven. 381 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-16 04:09:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493766026] [2023-12-16 04:09:59,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722685260] [2023-12-16 04:09:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722685260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:59,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:59,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-16 04:09:59,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026451623] [2023-12-16 04:09:59,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:59,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 04:09:59,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 04:09:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:09:59,399 INFO L87 Difference]: Start difference. First operand 4821 states and 7172 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 5 states have call successors, (133), 3 states have call predecessors, (133), 7 states have return successors, (134), 4 states have call predecessors, (134), 5 states have call successors, (134) [2023-12-16 04:10:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:02,702 INFO L93 Difference]: Finished difference Result 19675 states and 28417 transitions. [2023-12-16 04:10:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-16 04:10:02,702 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 5 states have call successors, (133), 3 states have call predecessors, (133), 7 states have return successors, (134), 4 states have call predecessors, (134), 5 states have call successors, (134) Word has length 452 [2023-12-16 04:10:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:02,741 INFO L225 Difference]: With dead ends: 19675 [2023-12-16 04:10:02,741 INFO L226 Difference]: Without dead ends: 14935 [2023-12-16 04:10:02,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=931, Invalid=3101, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 04:10:02,759 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1248 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:02,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 2027 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 04:10:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14935 states. [2023-12-16 04:10:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14935 to 8753. [2023-12-16 04:10:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8753 states, 7233 states have (on average 1.4471173786810452) internal successors, (10467), 7300 states have internal predecessors, (10467), 1178 states have call successors, (1178), 341 states have call predecessors, (1178), 341 states have return successors, (1178), 1111 states have call predecessors, (1178), 1178 states have call successors, (1178) [2023-12-16 04:10:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8753 states to 8753 states and 12823 transitions. [2023-12-16 04:10:03,494 INFO L78 Accepts]: Start accepts. Automaton has 8753 states and 12823 transitions. Word has length 452 [2023-12-16 04:10:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:03,494 INFO L495 AbstractCegarLoop]: Abstraction has 8753 states and 12823 transitions. [2023-12-16 04:10:03,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 5 states have call successors, (133), 3 states have call predecessors, (133), 7 states have return successors, (134), 4 states have call predecessors, (134), 5 states have call successors, (134) [2023-12-16 04:10:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8753 states and 12823 transitions. [2023-12-16 04:10:03,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-16 04:10:03,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:03,502 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:03,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:03,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:03,712 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:03,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1760346121, now seen corresponding path program 1 times [2023-12-16 04:10:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372702580] [2023-12-16 04:10:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:03,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:03,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201604907] [2023-12-16 04:10:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:03,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:03,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:03,770 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:03,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:10:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:04,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 04:10:04,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 642 proven. 384 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2023-12-16 04:10:05,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:10:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 6 proven. 387 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-16 04:10:06,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372702580] [2023-12-16 04:10:06,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201604907] [2023-12-16 04:10:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201604907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:10:06,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:10:06,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-16 04:10:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574011256] [2023-12-16 04:10:06,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:10:06,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 04:10:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 04:10:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:10:06,672 INFO L87 Difference]: Start difference. First operand 8753 states and 12823 transitions. Second operand has 22 states, 21 states have (on average 8.761904761904763) internal successors, (184), 22 states have internal predecessors, (184), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 4 states have call predecessors, (134), 6 states have call successors, (134) [2023-12-16 04:10:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:11,709 INFO L93 Difference]: Finished difference Result 44066 states and 65648 transitions. [2023-12-16 04:10:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 04:10:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 8.761904761904763) internal successors, (184), 22 states have internal predecessors, (184), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 4 states have call predecessors, (134), 6 states have call successors, (134) Word has length 452 [2023-12-16 04:10:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:11,772 INFO L225 Difference]: With dead ends: 44066 [2023-12-16 04:10:11,772 INFO L226 Difference]: Without dead ends: 35406 [2023-12-16 04:10:11,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=710, Invalid=2482, Unknown=0, NotChecked=0, Total=3192 [2023-12-16 04:10:11,792 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 4741 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 1252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4745 SdHoareTripleChecker+Valid, 3422 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1252 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:11,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4745 Valid, 3422 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1252 Valid, 2882 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 04:10:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35406 states. [2023-12-16 04:10:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35406 to 20224. [2023-12-16 04:10:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20224 states, 17215 states have (on average 1.4624455416787685) internal successors, (25176), 17371 states have internal predecessors, (25176), 2263 states have call successors, (2263), 745 states have call predecessors, (2263), 745 states have return successors, (2263), 2107 states have call predecessors, (2263), 2263 states have call successors, (2263) [2023-12-16 04:10:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20224 states to 20224 states and 29702 transitions. [2023-12-16 04:10:13,633 INFO L78 Accepts]: Start accepts. Automaton has 20224 states and 29702 transitions. Word has length 452 [2023-12-16 04:10:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:13,633 INFO L495 AbstractCegarLoop]: Abstraction has 20224 states and 29702 transitions. [2023-12-16 04:10:13,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 8.761904761904763) internal successors, (184), 22 states have internal predecessors, (184), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 4 states have call predecessors, (134), 6 states have call successors, (134) [2023-12-16 04:10:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 20224 states and 29702 transitions. [2023-12-16 04:10:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-16 04:10:13,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:13,639 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:13,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-16 04:10:13,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 04:10:13,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:13,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:13,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1683445323, now seen corresponding path program 1 times [2023-12-16 04:10:13,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:13,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950857043] [2023-12-16 04:10:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:13,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:13,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:13,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831283580] [2023-12-16 04:10:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:13,895 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:13,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:10:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:14,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 04:10:14,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:10:14,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950857043] [2023-12-16 04:10:14,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831283580] [2023-12-16 04:10:14,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831283580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:14,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:14,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:10:14,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930820621] [2023-12-16 04:10:14,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:14,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:10:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:10:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:10:14,416 INFO L87 Difference]: Start difference. First operand 20224 states and 29702 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:10:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:16,055 INFO L93 Difference]: Finished difference Result 37926 states and 55515 transitions. [2023-12-16 04:10:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:10:16,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 452 [2023-12-16 04:10:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:16,097 INFO L225 Difference]: With dead ends: 37926 [2023-12-16 04:10:16,097 INFO L226 Difference]: Without dead ends: 20000 [2023-12-16 04:10:16,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:10:16,121 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 350 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:16,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 530 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:10:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20000 states. [2023-12-16 04:10:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20000 to 20000. [2023-12-16 04:10:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20000 states, 16991 states have (on average 1.4520628568065446) internal successors, (24672), 17147 states have internal predecessors, (24672), 2263 states have call successors, (2263), 745 states have call predecessors, (2263), 745 states have return successors, (2263), 2107 states have call predecessors, (2263), 2263 states have call successors, (2263) [2023-12-16 04:10:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20000 states to 20000 states and 29198 transitions. [2023-12-16 04:10:17,907 INFO L78 Accepts]: Start accepts. Automaton has 20000 states and 29198 transitions. Word has length 452 [2023-12-16 04:10:17,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:17,907 INFO L495 AbstractCegarLoop]: Abstraction has 20000 states and 29198 transitions. [2023-12-16 04:10:17,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:10:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 20000 states and 29198 transitions. [2023-12-16 04:10:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-16 04:10:17,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:17,913 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:17,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:18,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:10:18,121 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:18,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 912082933, now seen corresponding path program 1 times [2023-12-16 04:10:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:18,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944428409] [2023-12-16 04:10:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:18,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:18,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083891505] [2023-12-16 04:10:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:18,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:18,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:18,177 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:18,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:10:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:18,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:10:18,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:10:18,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:18,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944428409] [2023-12-16 04:10:18,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083891505] [2023-12-16 04:10:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083891505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:18,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:18,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:10:18,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451433507] [2023-12-16 04:10:18,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:18,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:10:18,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:10:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:18,589 INFO L87 Difference]: Start difference. First operand 20000 states and 29198 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:10:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:21,745 INFO L93 Difference]: Finished difference Result 54408 states and 79003 transitions. [2023-12-16 04:10:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:10:21,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 452 [2023-12-16 04:10:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:21,842 INFO L225 Difference]: With dead ends: 54408 [2023-12-16 04:10:21,842 INFO L226 Difference]: Without dead ends: 36042 [2023-12-16 04:10:21,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:10:21,885 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 242 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:21,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 708 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:10:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36042 states. [2023-12-16 04:10:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36042 to 36028. [2023-12-16 04:10:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36028 states, 30114 states have (on average 1.4306634787806336) internal successors, (43083), 30438 states have internal predecessors, (43083), 4435 states have call successors, (4435), 1478 states have call predecessors, (4435), 1478 states have return successors, (4435), 4111 states have call predecessors, (4435), 4435 states have call successors, (4435) [2023-12-16 04:10:25,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36028 states to 36028 states and 51953 transitions. [2023-12-16 04:10:25,365 INFO L78 Accepts]: Start accepts. Automaton has 36028 states and 51953 transitions. Word has length 452 [2023-12-16 04:10:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:25,366 INFO L495 AbstractCegarLoop]: Abstraction has 36028 states and 51953 transitions. [2023-12-16 04:10:25,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:10:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 36028 states and 51953 transitions. [2023-12-16 04:10:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-16 04:10:25,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:25,375 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:25,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-16 04:10:25,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 04:10:25,578 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:25,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1454611661, now seen corresponding path program 1 times [2023-12-16 04:10:25,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:25,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978433450] [2023-12-16 04:10:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:25,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:25,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:25,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644643481] [2023-12-16 04:10:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:25,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:25,650 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:25,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:10:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:26,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:10:26,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 04:10:26,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:10:26,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:26,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978433450] [2023-12-16 04:10:26,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:26,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644643481] [2023-12-16 04:10:26,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644643481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:10:26,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:10:26,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:10:26,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97725092] [2023-12-16 04:10:26,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:10:26,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:10:26,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:26,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:10:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:10:26,113 INFO L87 Difference]: Start difference. First operand 36028 states and 51953 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:10:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:10:29,371 INFO L93 Difference]: Finished difference Result 69688 states and 100359 transitions. [2023-12-16 04:10:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:10:29,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 452 [2023-12-16 04:10:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:10:29,535 INFO L225 Difference]: With dead ends: 69688 [2023-12-16 04:10:29,535 INFO L226 Difference]: Without dead ends: 36090 [2023-12-16 04:10:29,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:10:29,573 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 304 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:29,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1463 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:10:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36090 states. [2023-12-16 04:10:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36090 to 26812. [2023-12-16 04:10:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26812 states, 23790 states have (on average 1.441235813366961) internal successors, (34287), 23946 states have internal predecessors, (34287), 2263 states have call successors, (2263), 758 states have call predecessors, (2263), 758 states have return successors, (2263), 2107 states have call predecessors, (2263), 2263 states have call successors, (2263) [2023-12-16 04:10:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26812 states to 26812 states and 38813 transitions. [2023-12-16 04:10:31,690 INFO L78 Accepts]: Start accepts. Automaton has 26812 states and 38813 transitions. Word has length 452 [2023-12-16 04:10:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:10:31,691 INFO L495 AbstractCegarLoop]: Abstraction has 26812 states and 38813 transitions. [2023-12-16 04:10:31,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 04:10:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 26812 states and 38813 transitions. [2023-12-16 04:10:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-16 04:10:31,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:10:31,697 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:31,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 04:10:31,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 04:10:31,906 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:10:31,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:10:31,906 INFO L85 PathProgramCache]: Analyzing trace with hash 468616373, now seen corresponding path program 1 times [2023-12-16 04:10:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:10:31,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850981712] [2023-12-16 04:10:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:31,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:10:31,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:10:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642654804] [2023-12-16 04:10:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:10:31,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:31,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:10:31,942 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:10:31,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:10:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:10:32,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:10:32,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:10:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 456 proven. 3 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-16 04:10:32,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:10:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 04:10:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:10:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850981712] [2023-12-16 04:10:32,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:10:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642654804] [2023-12-16 04:10:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642654804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:10:32,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:10:32,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:10:32,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074488972] [2023-12-16 04:10:32,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:10:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:10:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:10:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:10:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:10:32,611 INFO L87 Difference]: Start difference. First operand 26812 states and 38813 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Received shutdown request... [2023-12-16 04:10:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:10:33,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 896 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:10:33,184 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 420 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:10:33,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 672 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:10:33,184 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:10:33,185 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:10:33,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-16 04:10:33,210 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:10:33,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:10:33,393 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (26812states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6132 states constructed, input type IntersectNwa). [2023-12-16 04:10:33,398 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:10:33,400 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:10:33,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:10:33 BoogieIcfgContainer [2023-12-16 04:10:33,404 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:10:33,404 INFO L158 Benchmark]: Toolchain (without parser) took 62109.27ms. Allocated memory was 305.1MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 252.0MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 892.9MB. Max. memory is 8.0GB. [2023-12-16 04:10:33,404 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 168.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:10:33,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.60ms. Allocated memory is still 305.1MB. Free memory was 251.7MB in the beginning and 214.3MB in the end (delta: 37.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-16 04:10:33,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 133.15ms. Allocated memory is still 305.1MB. Free memory was 214.2MB in the beginning and 254.5MB in the end (delta: -40.2MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2023-12-16 04:10:33,405 INFO L158 Benchmark]: Boogie Preprocessor took 139.22ms. Allocated memory is still 305.1MB. Free memory was 254.5MB in the beginning and 192.1MB in the end (delta: 62.4MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-16 04:10:33,405 INFO L158 Benchmark]: RCFGBuilder took 1079.23ms. Allocated memory is still 305.1MB. Free memory was 191.5MB in the beginning and 204.1MB in the end (delta: -12.6MB). Peak memory consumption was 66.6MB. Max. memory is 8.0GB. [2023-12-16 04:10:33,405 INFO L158 Benchmark]: TraceAbstraction took 60136.70ms. Allocated memory was 305.1MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 203.1MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 842.9MB. Max. memory is 8.0GB. [2023-12-16 04:10:33,409 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 219.2MB. Free memory is still 168.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 613.60ms. Allocated memory is still 305.1MB. Free memory was 251.7MB in the beginning and 214.3MB in the end (delta: 37.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 133.15ms. Allocated memory is still 305.1MB. Free memory was 214.2MB in the beginning and 254.5MB in the end (delta: -40.2MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 139.22ms. Allocated memory is still 305.1MB. Free memory was 254.5MB in the beginning and 192.1MB in the end (delta: 62.4MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1079.23ms. Allocated memory is still 305.1MB. Free memory was 191.5MB in the beginning and 204.1MB in the end (delta: -12.6MB). Peak memory consumption was 66.6MB. Max. memory is 8.0GB. * TraceAbstraction took 60136.70ms. Allocated memory was 305.1MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 203.1MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 842.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (26812states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6132 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.1s, OverallIterations: 19, TraceHistogramMax: 67, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14101 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13861 mSDsluCounter, 21080 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13753 mSDsCounter, 2842 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9552 IncrementalHoareTripleChecker+Invalid, 12394 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2842 mSolverCounterUnsat, 7327 mSDtfsCounter, 9552 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12736 GetRequests, 12507 SyntacticMatches, 3 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36028occurred in iteration=17, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 41551 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 9014 NumberOfCodeBlocks, 9014 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 12594 ConstructedInterpolants, 0 QuantifiedInterpolants, 45089 SizeOfPredicates, 51 NumberOfNonLiveVariables, 21717 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 244275/247632 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown