/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-98.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:21:58,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:21:58,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:21:58,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:21:58,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:21:58,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:21:58,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:21:58,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:21:58,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:21:58,319 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:21:58,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:21:58,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:21:58,320 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:21:58,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:21:58,323 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:21:58,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:21:58,324 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:21:58,324 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:21:58,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:21:58,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:21:58,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:21:58,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:21:58,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:21:58,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:21:58,326 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:21:58,326 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:21:58,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:21:58,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:21:58,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:21:58,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:21:58,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:21:58,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:21:58,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:21:58,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:21:58,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:21:58,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:21:58,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:21:58,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:21:58,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:21:58,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:21:58,329 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:21:58,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:21:58,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:21:58,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:21:58,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:21:58,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:21:58,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:21:58,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:21:58,546 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:21:58,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-98.i [2023-12-21 01:21:59,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:21:59,866 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:21:59,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-98.i [2023-12-21 01:21:59,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1523a949a/86119db212b14a2385ee419364125f13/FLAG464c3f43a [2023-12-21 01:21:59,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1523a949a/86119db212b14a2385ee419364125f13 [2023-12-21 01:21:59,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:21:59,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:21:59,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:21:59,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:21:59,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:21:59,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:21:59" (1/1) ... [2023-12-21 01:21:59,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a25f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:59, skipping insertion in model container [2023-12-21 01:21:59,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:21:59" (1/1) ... [2023-12-21 01:21:59,966 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:22:00,074 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-98.i[916,929] [2023-12-21 01:22:00,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:22:00,297 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:22:00,305 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-98.i[916,929] [2023-12-21 01:22:00,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:22:00,401 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:22:00,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00 WrapperNode [2023-12-21 01:22:00,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:22:00,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:22:00,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:22:00,405 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:22:00,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,505 INFO L138 Inliner]: procedures = 26, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 629 [2023-12-21 01:22:00,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:22:00,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:22:00,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:22:00,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:22:00,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,570 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]. [2023-12-21 01:22:00,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:22:00,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:22:00,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:22:00,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:22:00,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (1/1) ... [2023-12-21 01:22:00,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:22:00,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:00,645 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) [2023-12-21 01:22:00,666 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 [2023-12-21 01:22:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:22:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:22:00,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:22:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:22:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:22:00,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:22:00,810 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:22:00,813 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:22:01,505 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:22:01,537 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:22:01,538 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:22:01,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:22:01 BoogieIcfgContainer [2023-12-21 01:22:01,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:22:01,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:22:01,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:22:01,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:22:01,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:21:59" (1/3) ... [2023-12-21 01:22:01,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20810d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:22:01, skipping insertion in model container [2023-12-21 01:22:01,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:22:00" (2/3) ... [2023-12-21 01:22:01,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20810d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:22:01, skipping insertion in model container [2023-12-21 01:22:01,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:22:01" (3/3) ... [2023-12-21 01:22:01,543 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-98.i [2023-12-21 01:22:01,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:22:01,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:22:01,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:22:01,601 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;@438ba566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:22:01,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:22:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 171 states have internal predecessors, (267), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 01:22:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:01,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:01,626 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:01,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:01,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1587589855, now seen corresponding path program 1 times [2023-12-21 01:22:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:01,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039168465] [2023-12-21 01:22:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:01,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039168465] [2023-12-21 01:22:01,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 01:22:01,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205170501] [2023-12-21 01:22:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:01,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:01,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:01,996 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) [2023-12-21 01:22:02,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:22:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:02,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 01:22:02,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2023-12-21 01:22:02,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205170501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:02,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:02,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:22:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458648254] [2023-12-21 01:22:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:22:02,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:22:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:22:02,413 INFO L87 Difference]: Start difference. First operand has 231 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 171 states have internal predecessors, (267), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-21 01:22:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:02,457 INFO L93 Difference]: Finished difference Result 459 states and 822 transitions. [2023-12-21 01:22:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:22:02,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) Word has length 403 [2023-12-21 01:22:02,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:02,466 INFO L225 Difference]: With dead ends: 459 [2023-12-21 01:22:02,466 INFO L226 Difference]: Without dead ends: 229 [2023-12-21 01:22:02,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:22:02,471 INFO L413 NwaCegarLoop]: 375 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, 375 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 [2023-12-21 01:22:02,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 375 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:22:02,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-21 01:22:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-12-21 01:22:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 169 states have (on average 1.5502958579881656) internal successors, (262), 169 states have internal predecessors, (262), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-21 01:22:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 378 transitions. [2023-12-21 01:22:02,511 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 378 transitions. Word has length 403 [2023-12-21 01:22:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:02,511 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 378 transitions. [2023-12-21 01:22:02,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-21 01:22:02,512 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 378 transitions. [2023-12-21 01:22:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:02,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:02,517 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:02,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:02,724 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 [2023-12-21 01:22:02,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:02,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1360827099, now seen corresponding path program 1 times [2023-12-21 01:22:02,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:02,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657920529] [2023-12-21 01:22:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:02,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075422324] [2023-12-21 01:22:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:02,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:02,850 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) [2023-12-21 01:22:02,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:22:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:03,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 01:22:03,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3220 proven. 0 refuted. 0 times theorem prover too weak. 3392 trivial. 0 not checked. [2023-12-21 01:22:03,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:03,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657920529] [2023-12-21 01:22:03,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075422324] [2023-12-21 01:22:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075422324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:03,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:03,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:22:03,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058363517] [2023-12-21 01:22:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:22:03,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:03,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:22:03,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:22:03,448 INFO L87 Difference]: Start difference. First operand 229 states and 378 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-21 01:22:04,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:04,624 INFO L93 Difference]: Finished difference Result 961 states and 1584 transitions. [2023-12-21 01:22:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:22:04,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 403 [2023-12-21 01:22:04,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:04,629 INFO L225 Difference]: With dead ends: 961 [2023-12-21 01:22:04,629 INFO L226 Difference]: Without dead ends: 733 [2023-12-21 01:22:04,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-12-21 01:22:04,631 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1705 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:04,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 2126 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 01:22:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-12-21 01:22:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 534. [2023-12-21 01:22:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 394 states have (on average 1.5380710659898478) internal successors, (606), 396 states have internal predecessors, (606), 135 states have call successors, (135), 4 states have call predecessors, (135), 4 states have return successors, (135), 133 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-21 01:22:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 876 transitions. [2023-12-21 01:22:04,671 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 876 transitions. Word has length 403 [2023-12-21 01:22:04,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:04,672 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 876 transitions. [2023-12-21 01:22:04,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-21 01:22:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 876 transitions. [2023-12-21 01:22:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:04,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:04,677 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:04,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:04,884 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 [2023-12-21 01:22:04,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:04,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1775757203, now seen corresponding path program 1 times [2023-12-21 01:22:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556892367] [2023-12-21 01:22:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:04,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:04,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232358334] [2023-12-21 01:22:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:04,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:04,929 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) [2023-12-21 01:22:04,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:22:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:05,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:22:05,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:05,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:05,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:05,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556892367] [2023-12-21 01:22:05,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:05,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232358334] [2023-12-21 01:22:05,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232358334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:05,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:05,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:22:05,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394687846] [2023-12-21 01:22:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:05,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:22:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:22:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:22:05,210 INFO L87 Difference]: Start difference. First operand 534 states and 876 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:05,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:05,297 INFO L93 Difference]: Finished difference Result 1546 states and 2528 transitions. [2023-12-21 01:22:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:22:05,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 403 [2023-12-21 01:22:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:05,303 INFO L225 Difference]: With dead ends: 1546 [2023-12-21 01:22:05,303 INFO L226 Difference]: Without dead ends: 1013 [2023-12-21 01:22:05,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:22:05,305 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 342 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:05,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1009 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:22:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2023-12-21 01:22:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 703. [2023-12-21 01:22:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 563 states have (on average 1.566607460035524) internal successors, (882), 565 states have internal predecessors, (882), 135 states have call successors, (135), 4 states have call predecessors, (135), 4 states have return successors, (135), 133 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-21 01:22:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1152 transitions. [2023-12-21 01:22:05,350 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1152 transitions. Word has length 403 [2023-12-21 01:22:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:05,350 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1152 transitions. [2023-12-21 01:22:05,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:05,351 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1152 transitions. [2023-12-21 01:22:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:05,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:05,355 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:05,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:05,564 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 [2023-12-21 01:22:05,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:05,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1527304721, now seen corresponding path program 1 times [2023-12-21 01:22:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582686031] [2023-12-21 01:22:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:05,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084826765] [2023-12-21 01:22:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:05,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:05,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:05,601 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) [2023-12-21 01:22:05,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 01:22:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:05,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:22:05,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:05,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582686031] [2023-12-21 01:22:05,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084826765] [2023-12-21 01:22:05,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084826765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:05,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:05,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:22:05,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191046864] [2023-12-21 01:22:05,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:05,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:22:05,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:22:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:22:05,854 INFO L87 Difference]: Start difference. First operand 703 states and 1152 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:05,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:05,955 INFO L93 Difference]: Finished difference Result 2095 states and 3430 transitions. [2023-12-21 01:22:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:22:05,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 403 [2023-12-21 01:22:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:05,961 INFO L225 Difference]: With dead ends: 2095 [2023-12-21 01:22:05,961 INFO L226 Difference]: Without dead ends: 1393 [2023-12-21 01:22:05,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:22:05,963 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 361 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:05,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1066 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:22:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2023-12-21 01:22:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1383. [2023-12-21 01:22:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1104 states have (on average 1.5434782608695652) internal successors, (1704), 1108 states have internal predecessors, (1704), 270 states have call successors, (270), 8 states have call predecessors, (270), 8 states have return successors, (270), 266 states have call predecessors, (270), 270 states have call successors, (270) [2023-12-21 01:22:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2244 transitions. [2023-12-21 01:22:06,070 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2244 transitions. Word has length 403 [2023-12-21 01:22:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:06,070 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 2244 transitions. [2023-12-21 01:22:06,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2244 transitions. [2023-12-21 01:22:06,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:06,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:06,073 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:06,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:06,281 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 [2023-12-21 01:22:06,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:06,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:06,282 INFO L85 PathProgramCache]: Analyzing trace with hash -412147119, now seen corresponding path program 1 times [2023-12-21 01:22:06,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737478580] [2023-12-21 01:22:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:06,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:06,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:06,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886019849] [2023-12-21 01:22:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:06,317 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) [2023-12-21 01:22:06,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 01:22:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:06,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:22:06,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:06,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:06,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737478580] [2023-12-21 01:22:06,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886019849] [2023-12-21 01:22:06,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886019849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:06,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:06,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:22:06,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219708791] [2023-12-21 01:22:06,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:06,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:22:06,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:22:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:22:06,628 INFO L87 Difference]: Start difference. First operand 1383 states and 2244 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:06,904 INFO L93 Difference]: Finished difference Result 4288 states and 6953 transitions. [2023-12-21 01:22:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:22:06,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 403 [2023-12-21 01:22:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:06,914 INFO L225 Difference]: With dead ends: 4288 [2023-12-21 01:22:06,914 INFO L226 Difference]: Without dead ends: 2906 [2023-12-21 01:22:06,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:22:06,917 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 720 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:06,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1004 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:22:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2023-12-21 01:22:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2761. [2023-12-21 01:22:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2204 states have (on average 1.530852994555354) internal successors, (3374), 2212 states have internal predecessors, (3374), 540 states have call successors, (540), 16 states have call predecessors, (540), 16 states have return successors, (540), 532 states have call predecessors, (540), 540 states have call successors, (540) [2023-12-21 01:22:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 4454 transitions. [2023-12-21 01:22:07,052 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 4454 transitions. Word has length 403 [2023-12-21 01:22:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:07,052 INFO L495 AbstractCegarLoop]: Abstraction has 2761 states and 4454 transitions. [2023-12-21 01:22:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 4454 transitions. [2023-12-21 01:22:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:07,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:07,056 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:07,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:07,263 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 [2023-12-21 01:22:07,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:07,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:07,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1527014927, now seen corresponding path program 1 times [2023-12-21 01:22:07,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:07,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141972841] [2023-12-21 01:22:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:07,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:07,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:07,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275622426] [2023-12-21 01:22:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:07,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:07,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:07,297 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) [2023-12-21 01:22:07,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 01:22:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:07,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 01:22:07,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:07,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141972841] [2023-12-21 01:22:07,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275622426] [2023-12-21 01:22:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275622426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:07,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:07,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:22:07,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734640544] [2023-12-21 01:22:07,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:07,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:22:07,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:22:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:22:07,762 INFO L87 Difference]: Start difference. First operand 2761 states and 4454 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:08,347 INFO L93 Difference]: Finished difference Result 7937 states and 12759 transitions. [2023-12-21 01:22:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:22:08,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 403 [2023-12-21 01:22:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:08,365 INFO L225 Difference]: With dead ends: 7937 [2023-12-21 01:22:08,365 INFO L226 Difference]: Without dead ends: 5177 [2023-12-21 01:22:08,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:22:08,372 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1083 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:08,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1235 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:22:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5177 states. [2023-12-21 01:22:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5177 to 3627. [2023-12-21 01:22:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3182 states have (on average 1.5505971087366437) internal successors, (4934), 3190 states have internal predecessors, (4934), 424 states have call successors, (424), 20 states have call predecessors, (424), 20 states have return successors, (424), 416 states have call predecessors, (424), 424 states have call successors, (424) [2023-12-21 01:22:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5782 transitions. [2023-12-21 01:22:08,546 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5782 transitions. Word has length 403 [2023-12-21 01:22:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:08,546 INFO L495 AbstractCegarLoop]: Abstraction has 3627 states and 5782 transitions. [2023-12-21 01:22:08,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5782 transitions. [2023-12-21 01:22:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:08,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:08,551 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:08,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:08,758 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 [2023-12-21 01:22:08,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:08,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:08,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1949716753, now seen corresponding path program 1 times [2023-12-21 01:22:08,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:08,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866876224] [2023-12-21 01:22:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:08,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:08,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155317214] [2023-12-21 01:22:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:08,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:08,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:08,806 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) [2023-12-21 01:22:08,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 01:22:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:09,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:22:09,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3363 proven. 84 refuted. 0 times theorem prover too weak. 3165 trivial. 0 not checked. [2023-12-21 01:22:09,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:22:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 87 proven. 84 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-21 01:22:09,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866876224] [2023-12-21 01:22:09,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155317214] [2023-12-21 01:22:09,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155317214] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:22:09,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:22:09,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:22:09,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936307131] [2023-12-21 01:22:09,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:22:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:22:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:22:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:22:09,581 INFO L87 Difference]: Start difference. First operand 3627 states and 5782 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-21 01:22:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:10,055 INFO L93 Difference]: Finished difference Result 7229 states and 11500 transitions. [2023-12-21 01:22:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:22:10,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 403 [2023-12-21 01:22:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:10,066 INFO L225 Difference]: With dead ends: 7229 [2023-12-21 01:22:10,067 INFO L226 Difference]: Without dead ends: 3579 [2023-12-21 01:22:10,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 798 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:22:10,071 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 211 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:10,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 891 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:22:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2023-12-21 01:22:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3493. [2023-12-21 01:22:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 3044 states have (on average 1.538107752956636) internal successors, (4682), 3052 states have internal predecessors, (4682), 424 states have call successors, (424), 24 states have call predecessors, (424), 24 states have return successors, (424), 416 states have call predecessors, (424), 424 states have call successors, (424) [2023-12-21 01:22:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5530 transitions. [2023-12-21 01:22:10,215 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5530 transitions. Word has length 403 [2023-12-21 01:22:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:10,216 INFO L495 AbstractCegarLoop]: Abstraction has 3493 states and 5530 transitions. [2023-12-21 01:22:10,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-21 01:22:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5530 transitions. [2023-12-21 01:22:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:10,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:10,220 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:10,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:10,427 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 [2023-12-21 01:22:10,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:10,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash -201726193, now seen corresponding path program 1 times [2023-12-21 01:22:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934338482] [2023-12-21 01:22:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:10,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:10,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636593901] [2023-12-21 01:22:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:10,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:10,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:10,480 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) [2023-12-21 01:22:10,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 01:22:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:10,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:22:10,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:11,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934338482] [2023-12-21 01:22:11,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636593901] [2023-12-21 01:22:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636593901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:22:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321693776] [2023-12-21 01:22:11,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:11,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:22:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:22:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:22:11,104 INFO L87 Difference]: Start difference. First operand 3493 states and 5530 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:11,307 INFO L93 Difference]: Finished difference Result 10477 states and 16588 transitions. [2023-12-21 01:22:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:22:11,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 403 [2023-12-21 01:22:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:11,332 INFO L225 Difference]: With dead ends: 10477 [2023-12-21 01:22:11,332 INFO L226 Difference]: Without dead ends: 6985 [2023-12-21 01:22:11,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:22:11,341 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 161 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:11,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 734 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:22:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6985 states. [2023-12-21 01:22:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6985 to 6983. [2023-12-21 01:22:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6983 states, 6086 states have (on average 1.5343411107459743) internal successors, (9338), 6102 states have internal predecessors, (9338), 848 states have call successors, (848), 48 states have call predecessors, (848), 48 states have return successors, (848), 832 states have call predecessors, (848), 848 states have call successors, (848) [2023-12-21 01:22:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 11034 transitions. [2023-12-21 01:22:11,621 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 11034 transitions. Word has length 403 [2023-12-21 01:22:11,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:11,621 INFO L495 AbstractCegarLoop]: Abstraction has 6983 states and 11034 transitions. [2023-12-21 01:22:11,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:11,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 11034 transitions. [2023-12-21 01:22:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:11,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:11,627 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:11,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:11,850 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 [2023-12-21 01:22:11,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:11,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 220975633, now seen corresponding path program 1 times [2023-12-21 01:22:11,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:11,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156584016] [2023-12-21 01:22:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:11,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:11,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135514830] [2023-12-21 01:22:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:11,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:11,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:11,898 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) [2023-12-21 01:22:11,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 01:22:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:12,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:22:12,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 711 proven. 162 refuted. 0 times theorem prover too weak. 5739 trivial. 0 not checked. [2023-12-21 01:22:13,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:22:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 9 proven. 162 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-21 01:22:13,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:13,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156584016] [2023-12-21 01:22:13,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:13,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135514830] [2023-12-21 01:22:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135514830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:22:13,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:22:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-21 01:22:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674605906] [2023-12-21 01:22:13,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:22:13,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 01:22:13,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 01:22:13,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:22:13,763 INFO L87 Difference]: Start difference. First operand 6983 states and 11034 transitions. Second operand has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 4 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) [2023-12-21 01:22:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:15,564 INFO L93 Difference]: Finished difference Result 23537 states and 37307 transitions. [2023-12-21 01:22:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 01:22:15,565 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 4 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) Word has length 403 [2023-12-21 01:22:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:15,610 INFO L225 Difference]: With dead ends: 23537 [2023-12-21 01:22:15,610 INFO L226 Difference]: Without dead ends: 16555 [2023-12-21 01:22:15,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:22:15,625 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 2818 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:15,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2875 Valid, 2296 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 01:22:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16555 states. [2023-12-21 01:22:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16555 to 7100. [2023-12-21 01:22:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7100 states, 6140 states have (on average 1.530130293159609) internal successors, (9395), 6156 states have internal predecessors, (9395), 906 states have call successors, (906), 53 states have call predecessors, (906), 53 states have return successors, (906), 890 states have call predecessors, (906), 906 states have call successors, (906) [2023-12-21 01:22:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7100 states to 7100 states and 11207 transitions. [2023-12-21 01:22:16,036 INFO L78 Accepts]: Start accepts. Automaton has 7100 states and 11207 transitions. Word has length 403 [2023-12-21 01:22:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:16,037 INFO L495 AbstractCegarLoop]: Abstraction has 7100 states and 11207 transitions. [2023-12-21 01:22:16,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 4 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) [2023-12-21 01:22:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7100 states and 11207 transitions. [2023-12-21 01:22:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:16,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:16,044 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:16,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:16,251 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 [2023-12-21 01:22:16,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:16,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1856361265, now seen corresponding path program 1 times [2023-12-21 01:22:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:16,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264585631] [2023-12-21 01:22:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:16,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:16,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868713762] [2023-12-21 01:22:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:16,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:16,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:16,292 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) [2023-12-21 01:22:16,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 01:22:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:16,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:22:16,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3648 proven. 45 refuted. 0 times theorem prover too weak. 2919 trivial. 0 not checked. [2023-12-21 01:22:17,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:22:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-21 01:22:17,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264585631] [2023-12-21 01:22:17,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868713762] [2023-12-21 01:22:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868713762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:22:17,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:22:17,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 01:22:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126207098] [2023-12-21 01:22:17,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:22:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:22:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:22:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:22:17,457 INFO L87 Difference]: Start difference. First operand 7100 states and 11207 transitions. Second operand has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 5 states have call successors, (109), 3 states have call predecessors, (109), 5 states have return successors, (109), 5 states have call predecessors, (109), 5 states have call successors, (109) [2023-12-21 01:22:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:18,525 INFO L93 Difference]: Finished difference Result 14186 states and 22335 transitions. [2023-12-21 01:22:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:22:18,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 5 states have call successors, (109), 3 states have call predecessors, (109), 5 states have return successors, (109), 5 states have call predecessors, (109), 5 states have call successors, (109) Word has length 403 [2023-12-21 01:22:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:18,539 INFO L225 Difference]: With dead ends: 14186 [2023-12-21 01:22:18,539 INFO L226 Difference]: Without dead ends: 7204 [2023-12-21 01:22:18,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:22:18,549 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 882 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:18,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 869 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 01:22:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2023-12-21 01:22:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 7136. [2023-12-21 01:22:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 6167 states have (on average 1.5122425814820821) internal successors, (9326), 6183 states have internal predecessors, (9326), 906 states have call successors, (906), 62 states have call predecessors, (906), 62 states have return successors, (906), 890 states have call predecessors, (906), 906 states have call successors, (906) [2023-12-21 01:22:18,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 11138 transitions. [2023-12-21 01:22:18,932 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 11138 transitions. Word has length 403 [2023-12-21 01:22:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:18,933 INFO L495 AbstractCegarLoop]: Abstraction has 7136 states and 11138 transitions. [2023-12-21 01:22:18,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 5 states have call successors, (109), 3 states have call predecessors, (109), 5 states have return successors, (109), 5 states have call predecessors, (109), 5 states have call successors, (109) [2023-12-21 01:22:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 11138 transitions. [2023-12-21 01:22:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:18,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:18,939 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:18,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:19,147 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 [2023-12-21 01:22:19,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:19,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1951289369, now seen corresponding path program 1 times [2023-12-21 01:22:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:19,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461919562] [2023-12-21 01:22:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:19,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:19,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286265397] [2023-12-21 01:22:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:19,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:19,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:19,194 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) [2023-12-21 01:22:19,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 01:22:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:19,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 01:22:19,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:19,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:19,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461919562] [2023-12-21 01:22:19,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286265397] [2023-12-21 01:22:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286265397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:19,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:22:19,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922379722] [2023-12-21 01:22:19,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:19,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:22:19,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:19,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:22:19,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:22:19,571 INFO L87 Difference]: Start difference. First operand 7136 states and 11138 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:21,112 INFO L93 Difference]: Finished difference Result 31260 states and 49102 transitions. [2023-12-21 01:22:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:22:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 403 [2023-12-21 01:22:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:21,163 INFO L225 Difference]: With dead ends: 31260 [2023-12-21 01:22:21,164 INFO L226 Difference]: Without dead ends: 24246 [2023-12-21 01:22:21,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:22:21,181 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 1073 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:21,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 3104 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:22:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24246 states. [2023-12-21 01:22:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24246 to 16252. [2023-12-21 01:22:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16252 states, 14379 states have (on average 1.515960776131859) internal successors, (21798), 14411 states have internal predecessors, (21798), 1754 states have call successors, (1754), 118 states have call predecessors, (1754), 118 states have return successors, (1754), 1722 states have call predecessors, (1754), 1754 states have call successors, (1754) [2023-12-21 01:22:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 25306 transitions. [2023-12-21 01:22:22,112 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 25306 transitions. Word has length 403 [2023-12-21 01:22:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:22,113 INFO L495 AbstractCegarLoop]: Abstraction has 16252 states and 25306 transitions. [2023-12-21 01:22:22,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 25306 transitions. [2023-12-21 01:22:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:22,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:22,126 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:22,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:22,334 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 [2023-12-21 01:22:22,334 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:22,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1611759847, now seen corresponding path program 1 times [2023-12-21 01:22:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:22,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132260261] [2023-12-21 01:22:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:22,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:22,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484564556] [2023-12-21 01:22:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:22,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:22,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:22,387 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) [2023-12-21 01:22:22,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 01:22:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:22,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 01:22:22,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3437 proven. 213 refuted. 0 times theorem prover too weak. 2962 trivial. 0 not checked. [2023-12-21 01:22:23,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:22:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 123 proven. 216 refuted. 0 times theorem prover too weak. 6273 trivial. 0 not checked. [2023-12-21 01:22:23,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:23,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132260261] [2023-12-21 01:22:23,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:23,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484564556] [2023-12-21 01:22:23,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484564556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:22:23,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:22:23,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-21 01:22:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126010870] [2023-12-21 01:22:23,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:22:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 01:22:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 01:22:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:22:23,448 INFO L87 Difference]: Start difference. First operand 16252 states and 25306 transitions. Second operand has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 5 states have call successors, (96), 3 states have call predecessors, (96), 7 states have return successors, (97), 5 states have call predecessors, (97), 5 states have call successors, (97) [2023-12-21 01:22:24,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:24,551 INFO L93 Difference]: Finished difference Result 23770 states and 36901 transitions. [2023-12-21 01:22:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:22:24,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 5 states have call successors, (96), 3 states have call predecessors, (96), 7 states have return successors, (97), 5 states have call predecessors, (97), 5 states have call successors, (97) Word has length 403 [2023-12-21 01:22:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:24,575 INFO L225 Difference]: With dead ends: 23770 [2023-12-21 01:22:24,575 INFO L226 Difference]: Without dead ends: 7640 [2023-12-21 01:22:24,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2023-12-21 01:22:24,592 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 390 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:24,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1251 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:22:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2023-12-21 01:22:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 7572. [2023-12-21 01:22:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7572 states, 6481 states have (on average 1.4991513655300108) internal successors, (9716), 6481 states have internal predecessors, (9716), 986 states have call successors, (986), 104 states have call predecessors, (986), 104 states have return successors, (986), 986 states have call predecessors, (986), 986 states have call successors, (986) [2023-12-21 01:22:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7572 states to 7572 states and 11688 transitions. [2023-12-21 01:22:25,029 INFO L78 Accepts]: Start accepts. Automaton has 7572 states and 11688 transitions. Word has length 403 [2023-12-21 01:22:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:25,029 INFO L495 AbstractCegarLoop]: Abstraction has 7572 states and 11688 transitions. [2023-12-21 01:22:25,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 5 states have call successors, (96), 3 states have call predecessors, (96), 7 states have return successors, (97), 5 states have call predecessors, (97), 5 states have call successors, (97) [2023-12-21 01:22:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7572 states and 11688 transitions. [2023-12-21 01:22:25,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:25,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:25,036 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:25,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 01:22:25,248 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 [2023-12-21 01:22:25,249 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:25,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1291708501, now seen corresponding path program 1 times [2023-12-21 01:22:25,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:25,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739308856] [2023-12-21 01:22:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:25,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:25,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:25,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998154105] [2023-12-21 01:22:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:25,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:25,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:25,284 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) [2023-12-21 01:22:25,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 01:22:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:25,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:22:25,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:25,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:25,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739308856] [2023-12-21 01:22:25,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998154105] [2023-12-21 01:22:25,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998154105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:25,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:25,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:22:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433111294] [2023-12-21 01:22:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:25,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:22:25,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:25,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:22:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:22:25,623 INFO L87 Difference]: Start difference. First operand 7572 states and 11688 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:27,023 INFO L93 Difference]: Finished difference Result 27524 states and 42572 transitions. [2023-12-21 01:22:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:22:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 403 [2023-12-21 01:22:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:27,062 INFO L225 Difference]: With dead ends: 27524 [2023-12-21 01:22:27,062 INFO L226 Difference]: Without dead ends: 20082 [2023-12-21 01:22:27,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:22:27,074 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1066 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:27,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 2741 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:22:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20082 states. [2023-12-21 01:22:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20082 to 15332. [2023-12-21 01:22:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15332 states, 13393 states have (on average 1.4966027029045024) internal successors, (20044), 13425 states have internal predecessors, (20044), 1754 states have call successors, (1754), 184 states have call predecessors, (1754), 184 states have return successors, (1754), 1722 states have call predecessors, (1754), 1754 states have call successors, (1754) [2023-12-21 01:22:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15332 states to 15332 states and 23552 transitions. [2023-12-21 01:22:28,109 INFO L78 Accepts]: Start accepts. Automaton has 15332 states and 23552 transitions. Word has length 403 [2023-12-21 01:22:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:28,109 INFO L495 AbstractCegarLoop]: Abstraction has 15332 states and 23552 transitions. [2023-12-21 01:22:28,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 15332 states and 23552 transitions. [2023-12-21 01:22:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-21 01:22:28,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:28,120 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:28,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:28,327 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 [2023-12-21 01:22:28,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:28,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1951240023, now seen corresponding path program 1 times [2023-12-21 01:22:28,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:28,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620508716] [2023-12-21 01:22:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:28,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:28,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571991092] [2023-12-21 01:22:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:28,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:28,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:28,359 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) [2023-12-21 01:22:28,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 01:22:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:28,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 01:22:28,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4526 proven. 177 refuted. 0 times theorem prover too weak. 1909 trivial. 0 not checked. [2023-12-21 01:22:29,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:22:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 159 proven. 180 refuted. 0 times theorem prover too weak. 6273 trivial. 0 not checked. [2023-12-21 01:22:30,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:30,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620508716] [2023-12-21 01:22:30,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:30,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571991092] [2023-12-21 01:22:30,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571991092] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:22:30,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:22:30,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-21 01:22:30,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998861332] [2023-12-21 01:22:30,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:22:30,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 01:22:30,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 01:22:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-12-21 01:22:30,232 INFO L87 Difference]: Start difference. First operand 15332 states and 23552 transitions. Second operand has 22 states, 22 states have (on average 10.272727272727273) internal successors, (226), 22 states have internal predecessors, (226), 7 states have call successors, (97), 4 states have call predecessors, (97), 8 states have return successors, (98), 7 states have call predecessors, (98), 7 states have call successors, (98) [2023-12-21 01:22:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:32,950 INFO L93 Difference]: Finished difference Result 44580 states and 68323 transitions. [2023-12-21 01:22:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 01:22:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.272727272727273) internal successors, (226), 22 states have internal predecessors, (226), 7 states have call successors, (97), 4 states have call predecessors, (97), 8 states have return successors, (98), 7 states have call predecessors, (98), 7 states have call successors, (98) Word has length 403 [2023-12-21 01:22:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:33,002 INFO L225 Difference]: With dead ends: 44580 [2023-12-21 01:22:33,003 INFO L226 Difference]: Without dead ends: 29378 [2023-12-21 01:22:33,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=456, Invalid=1104, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 01:22:33,024 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 2327 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:33,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 1646 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 01:22:33,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29378 states. [2023-12-21 01:22:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29378 to 14408. [2023-12-21 01:22:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14408 states, 13250 states have (on average 1.5092075471698114) internal successors, (19997), 13250 states have internal predecessors, (19997), 986 states have call successors, (986), 171 states have call predecessors, (986), 171 states have return successors, (986), 986 states have call predecessors, (986), 986 states have call successors, (986) [2023-12-21 01:22:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14408 states to 14408 states and 21969 transitions. [2023-12-21 01:22:33,744 INFO L78 Accepts]: Start accepts. Automaton has 14408 states and 21969 transitions. Word has length 403 [2023-12-21 01:22:33,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:33,745 INFO L495 AbstractCegarLoop]: Abstraction has 14408 states and 21969 transitions. [2023-12-21 01:22:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.272727272727273) internal successors, (226), 22 states have internal predecessors, (226), 7 states have call successors, (97), 4 states have call predecessors, (97), 8 states have return successors, (98), 7 states have call predecessors, (98), 7 states have call successors, (98) [2023-12-21 01:22:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 14408 states and 21969 transitions. [2023-12-21 01:22:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-21 01:22:33,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:33,755 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:33,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:33,963 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 [2023-12-21 01:22:33,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:33,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash -669645772, now seen corresponding path program 1 times [2023-12-21 01:22:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592824655] [2023-12-21 01:22:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:34,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:34,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106917809] [2023-12-21 01:22:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:34,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:34,012 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) [2023-12-21 01:22:34,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 01:22:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:34,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 01:22:34,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4404 proven. 177 refuted. 0 times theorem prover too weak. 2031 trivial. 0 not checked. [2023-12-21 01:22:35,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:22:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 159 proven. 180 refuted. 0 times theorem prover too weak. 6273 trivial. 0 not checked. [2023-12-21 01:22:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:35,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592824655] [2023-12-21 01:22:35,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:35,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106917809] [2023-12-21 01:22:35,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106917809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:22:35,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:22:35,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-21 01:22:35,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113432088] [2023-12-21 01:22:35,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:22:35,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 01:22:35,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:35,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 01:22:35,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:22:35,945 INFO L87 Difference]: Start difference. First operand 14408 states and 21969 transitions. Second operand has 20 states, 20 states have (on average 11.9) internal successors, (238), 20 states have internal predecessors, (238), 6 states have call successors, (116), 4 states have call predecessors, (116), 8 states have return successors, (116), 6 states have call predecessors, (116), 6 states have call successors, (116) [2023-12-21 01:22:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:40,742 INFO L93 Difference]: Finished difference Result 66554 states and 101782 transitions. [2023-12-21 01:22:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 01:22:40,742 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.9) internal successors, (238), 20 states have internal predecessors, (238), 6 states have call successors, (116), 4 states have call predecessors, (116), 8 states have return successors, (116), 6 states have call predecessors, (116), 6 states have call successors, (116) Word has length 404 [2023-12-21 01:22:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:40,818 INFO L225 Difference]: With dead ends: 66554 [2023-12-21 01:22:40,818 INFO L226 Difference]: Without dead ends: 52288 [2023-12-21 01:22:40,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=732, Invalid=1430, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 01:22:40,832 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2335 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 4809 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:40,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 4809 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 01:22:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52288 states. [2023-12-21 01:22:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52288 to 23848. [2023-12-21 01:22:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23848 states, 21602 states have (on average 1.5015739283399685) internal successors, (32437), 21602 states have internal predecessors, (32437), 1914 states have call successors, (1914), 331 states have call predecessors, (1914), 331 states have return successors, (1914), 1914 states have call predecessors, (1914), 1914 states have call successors, (1914) [2023-12-21 01:22:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23848 states to 23848 states and 36265 transitions. [2023-12-21 01:22:42,181 INFO L78 Accepts]: Start accepts. Automaton has 23848 states and 36265 transitions. Word has length 404 [2023-12-21 01:22:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:42,181 INFO L495 AbstractCegarLoop]: Abstraction has 23848 states and 36265 transitions. [2023-12-21 01:22:42,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.9) internal successors, (238), 20 states have internal predecessors, (238), 6 states have call successors, (116), 4 states have call predecessors, (116), 8 states have return successors, (116), 6 states have call predecessors, (116), 6 states have call successors, (116) [2023-12-21 01:22:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 23848 states and 36265 transitions. [2023-12-21 01:22:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-21 01:22:42,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:42,193 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:42,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 01:22:42,400 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 [2023-12-21 01:22:42,401 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:42,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash 668411405, now seen corresponding path program 1 times [2023-12-21 01:22:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788697811] [2023-12-21 01:22:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:42,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:42,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78111656] [2023-12-21 01:22:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:42,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:42,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:42,435 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) [2023-12-21 01:22:42,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 01:22:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:42,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:22:42,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3363 proven. 84 refuted. 0 times theorem prover too weak. 3165 trivial. 0 not checked. [2023-12-21 01:22:42,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:22:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 87 proven. 84 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-21 01:22:43,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788697811] [2023-12-21 01:22:43,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:43,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78111656] [2023-12-21 01:22:43,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78111656] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:22:43,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:22:43,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-21 01:22:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750317292] [2023-12-21 01:22:43,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:22:43,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:22:43,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:22:43,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:22:43,221 INFO L87 Difference]: Start difference. First operand 23848 states and 36265 transitions. Second operand has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-21 01:22:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:45,319 INFO L93 Difference]: Finished difference Result 40866 states and 62008 transitions. [2023-12-21 01:22:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 01:22:45,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 404 [2023-12-21 01:22:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:45,346 INFO L225 Difference]: With dead ends: 40866 [2023-12-21 01:22:45,346 INFO L226 Difference]: Without dead ends: 17160 [2023-12-21 01:22:45,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 797 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-12-21 01:22:45,367 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1002 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:45,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1380 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 01:22:45,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17160 states. [2023-12-21 01:22:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17160 to 16896. [2023-12-21 01:22:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16896 states, 14650 states have (on average 1.478566552901024) internal successors, (21661), 14650 states have internal predecessors, (21661), 1914 states have call successors, (1914), 331 states have call predecessors, (1914), 331 states have return successors, (1914), 1914 states have call predecessors, (1914), 1914 states have call successors, (1914) [2023-12-21 01:22:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16896 states to 16896 states and 25489 transitions. [2023-12-21 01:22:46,735 INFO L78 Accepts]: Start accepts. Automaton has 16896 states and 25489 transitions. Word has length 404 [2023-12-21 01:22:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 16896 states and 25489 transitions. [2023-12-21 01:22:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-21 01:22:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 16896 states and 25489 transitions. [2023-12-21 01:22:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-21 01:22:46,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:46,745 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:46,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:46,954 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 [2023-12-21 01:22:46,955 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:46,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash -533126191, now seen corresponding path program 1 times [2023-12-21 01:22:46,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:46,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419749930] [2023-12-21 01:22:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:46,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082261353] [2023-12-21 01:22:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:47,010 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) [2023-12-21 01:22:47,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 01:22:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:47,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 01:22:47,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3452 proven. 0 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2023-12-21 01:22:48,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419749930] [2023-12-21 01:22:48,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:48,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082261353] [2023-12-21 01:22:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082261353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:22:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015028640] [2023-12-21 01:22:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:22:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:22:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:22:48,351 INFO L87 Difference]: Start difference. First operand 16896 states and 25489 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-21 01:22:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:49,814 INFO L93 Difference]: Finished difference Result 33650 states and 50786 transitions. [2023-12-21 01:22:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:22:49,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 404 [2023-12-21 01:22:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:49,837 INFO L225 Difference]: With dead ends: 33650 [2023-12-21 01:22:49,838 INFO L226 Difference]: Without dead ends: 16896 [2023-12-21 01:22:49,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:22:49,854 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 986 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:49,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 632 Invalid, 370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:22:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16896 states. [2023-12-21 01:22:50,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16896 to 16896. [2023-12-21 01:22:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16896 states, 14650 states have (on average 1.4654607508532422) internal successors, (21469), 14650 states have internal predecessors, (21469), 1914 states have call successors, (1914), 331 states have call predecessors, (1914), 331 states have return successors, (1914), 1914 states have call predecessors, (1914), 1914 states have call successors, (1914) [2023-12-21 01:22:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16896 states to 16896 states and 25297 transitions. [2023-12-21 01:22:51,012 INFO L78 Accepts]: Start accepts. Automaton has 16896 states and 25297 transitions. Word has length 404 [2023-12-21 01:22:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:51,013 INFO L495 AbstractCegarLoop]: Abstraction has 16896 states and 25297 transitions. [2023-12-21 01:22:51,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-21 01:22:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 16896 states and 25297 transitions. [2023-12-21 01:22:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-21 01:22:51,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:51,025 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:51,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:51,233 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 [2023-12-21 01:22:51,234 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:51,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1350774641, now seen corresponding path program 1 times [2023-12-21 01:22:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:51,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718326288] [2023-12-21 01:22:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:51,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028486475] [2023-12-21 01:22:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:51,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:51,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:51,290 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) [2023-12-21 01:22:51,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 01:22:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:51,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 01:22:51,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:51,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:51,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:51,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718326288] [2023-12-21 01:22:51,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028486475] [2023-12-21 01:22:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028486475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:51,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:51,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:22:51,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861111684] [2023-12-21 01:22:51,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:51,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:22:51,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:51,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:22:51,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:22:51,760 INFO L87 Difference]: Start difference. First operand 16896 states and 25297 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:22:54,163 INFO L93 Difference]: Finished difference Result 45892 states and 68355 transitions. [2023-12-21 01:22:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:22:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 404 [2023-12-21 01:22:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:22:54,207 INFO L225 Difference]: With dead ends: 45892 [2023-12-21 01:22:54,207 INFO L226 Difference]: Without dead ends: 29138 [2023-12-21 01:22:54,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:22:54,221 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 617 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:22:54,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1382 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:22:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29138 states. [2023-12-21 01:22:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29138 to 22496. [2023-12-21 01:22:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22496 states, 20250 states have (on average 1.478962962962963) internal successors, (29949), 20250 states have internal predecessors, (29949), 1914 states have call successors, (1914), 331 states have call predecessors, (1914), 331 states have return successors, (1914), 1914 states have call predecessors, (1914), 1914 states have call successors, (1914) [2023-12-21 01:22:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22496 states to 22496 states and 33777 transitions. [2023-12-21 01:22:55,661 INFO L78 Accepts]: Start accepts. Automaton has 22496 states and 33777 transitions. Word has length 404 [2023-12-21 01:22:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:22:55,661 INFO L495 AbstractCegarLoop]: Abstraction has 22496 states and 33777 transitions. [2023-12-21 01:22:55,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:22:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 22496 states and 33777 transitions. [2023-12-21 01:22:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-21 01:22:55,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:22:55,672 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:22:55,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 01:22:55,880 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 [2023-12-21 01:22:55,881 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:22:55,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:22:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -761689424, now seen corresponding path program 1 times [2023-12-21 01:22:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:22:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58848591] [2023-12-21 01:22:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:22:55,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:22:55,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669449996] [2023-12-21 01:22:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:22:55,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:22:55,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:22:55,950 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) [2023-12-21 01:22:55,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 01:22:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:22:56,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 01:22:56,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:22:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:22:58,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:22:58,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:22:58,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58848591] [2023-12-21 01:22:58,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:22:58,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669449996] [2023-12-21 01:22:58,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669449996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:22:58,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:22:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:22:58,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142088554] [2023-12-21 01:22:58,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:22:58,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:22:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:22:58,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:22:58,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:22:58,376 INFO L87 Difference]: Start difference. First operand 22496 states and 33777 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:23:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:23:01,582 INFO L93 Difference]: Finished difference Result 49156 states and 73827 transitions. [2023-12-21 01:23:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:23:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 405 [2023-12-21 01:23:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:23:01,617 INFO L225 Difference]: With dead ends: 49156 [2023-12-21 01:23:01,618 INFO L226 Difference]: Without dead ends: 26802 [2023-12-21 01:23:01,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:23:01,638 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 409 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 01:23:01,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1085 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 01:23:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26802 states. [2023-12-21 01:23:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26802 to 19696. [2023-12-21 01:23:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19696 states, 17450 states have (on average 1.472378223495702) internal successors, (25693), 17450 states have internal predecessors, (25693), 1914 states have call successors, (1914), 331 states have call predecessors, (1914), 331 states have return successors, (1914), 1914 states have call predecessors, (1914), 1914 states have call successors, (1914) [2023-12-21 01:23:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19696 states to 19696 states and 29521 transitions. [2023-12-21 01:23:02,925 INFO L78 Accepts]: Start accepts. Automaton has 19696 states and 29521 transitions. Word has length 405 [2023-12-21 01:23:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:23:02,926 INFO L495 AbstractCegarLoop]: Abstraction has 19696 states and 29521 transitions. [2023-12-21 01:23:02,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:23:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 19696 states and 29521 transitions. [2023-12-21 01:23:02,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-21 01:23:02,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:23:02,933 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:23:02,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 01:23:03,140 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 [2023-12-21 01:23:03,140 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:23:03,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:23:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1036449038, now seen corresponding path program 1 times [2023-12-21 01:23:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:23:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706958010] [2023-12-21 01:23:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:23:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:23:03,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:23:03,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072450196] [2023-12-21 01:23:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:23:03,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:23:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:23:03,178 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:23:03,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 01:23:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:23:03,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:23:03,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:23:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-21 01:23:04,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:23:04,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:23:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706958010] [2023-12-21 01:23:04,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:23:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072450196] [2023-12-21 01:23:04,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072450196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:23:04,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:23:04,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:23:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665156185] [2023-12-21 01:23:04,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:23:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:23:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:23:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:23:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:23:04,076 INFO L87 Difference]: Start difference. First operand 19696 states and 29521 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:23:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:23:06,014 INFO L93 Difference]: Finished difference Result 31756 states and 47627 transitions. [2023-12-21 01:23:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:23:06,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 405 [2023-12-21 01:23:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:23:06,046 INFO L225 Difference]: With dead ends: 31756 [2023-12-21 01:23:06,046 INFO L226 Difference]: Without dead ends: 20578 [2023-12-21 01:23:06,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:23:06,062 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 418 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:23:06,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1018 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:23:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20578 states. [2023-12-21 01:23:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20578 to 20560. [2023-12-21 01:23:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20560 states, 18250 states have (on average 1.4648219178082191) internal successors, (26733), 18266 states have internal predecessors, (26733), 1962 states have call successors, (1962), 347 states have call predecessors, (1962), 347 states have return successors, (1962), 1946 states have call predecessors, (1962), 1962 states have call successors, (1962) [2023-12-21 01:23:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20560 states to 20560 states and 30657 transitions. [2023-12-21 01:23:07,673 INFO L78 Accepts]: Start accepts. Automaton has 20560 states and 30657 transitions. Word has length 405 [2023-12-21 01:23:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:23:07,673 INFO L495 AbstractCegarLoop]: Abstraction has 20560 states and 30657 transitions. [2023-12-21 01:23:07,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-21 01:23:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 20560 states and 30657 transitions. [2023-12-21 01:23:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-21 01:23:07,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:23:07,679 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:23:07,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-21 01:23:07,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:23:07,885 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:23:07,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:23:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash -375931660, now seen corresponding path program 1 times [2023-12-21 01:23:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:23:07,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001834934] [2023-12-21 01:23:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:23:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:23:07,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:23:07,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409156000] [2023-12-21 01:23:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:23:07,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:23:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:23:08,001 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:23:08,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 01:23:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:23:08,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:23:08,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:23:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 2661 proven. 45 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2023-12-21 01:23:08,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:23:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-21 01:23:08,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:23:08,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001834934] [2023-12-21 01:23:08,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:23:08,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409156000] [2023-12-21 01:23:08,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409156000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:23:08,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:23:08,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 01:23:08,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508264487] [2023-12-21 01:23:08,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:23:08,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:23:08,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:23:08,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:23:08,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:23:08,724 INFO L87 Difference]: Start difference. First operand 20560 states and 30657 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-12-21 01:23:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:23:10,348 INFO L93 Difference]: Finished difference Result 41208 states and 61352 transitions. [2023-12-21 01:23:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:23:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) Word has length 406 [2023-12-21 01:23:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:23:10,377 INFO L225 Difference]: With dead ends: 41208 [2023-12-21 01:23:10,377 INFO L226 Difference]: Without dead ends: 20790 [2023-12-21 01:23:10,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:23:10,396 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 584 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:23:10,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 993 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:23:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20790 states. [2023-12-21 01:23:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20790 to 20560. [2023-12-21 01:23:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20560 states, 18250 states have (on average 1.463068493150685) internal successors, (26701), 18266 states have internal predecessors, (26701), 1962 states have call successors, (1962), 347 states have call predecessors, (1962), 347 states have return successors, (1962), 1946 states have call predecessors, (1962), 1962 states have call successors, (1962) [2023-12-21 01:23:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20560 states to 20560 states and 30625 transitions. [2023-12-21 01:23:11,713 INFO L78 Accepts]: Start accepts. Automaton has 20560 states and 30625 transitions. Word has length 406 [2023-12-21 01:23:11,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:23:11,713 INFO L495 AbstractCegarLoop]: Abstraction has 20560 states and 30625 transitions. [2023-12-21 01:23:11,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-12-21 01:23:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 20560 states and 30625 transitions. [2023-12-21 01:23:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-21 01:23:11,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:23:11,720 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:23:11,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 01:23:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:23:11,928 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:23:11,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:23:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1737321927, now seen corresponding path program 1 times [2023-12-21 01:23:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:23:11,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998861588] [2023-12-21 01:23:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:23:11,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:23:11,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:23:11,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769972372] [2023-12-21 01:23:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:23:11,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:23:11,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:23:11,961 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:23:11,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 01:23:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:23:12,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-21 01:23:12,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:25:39,966 WARN L293 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:27:15,017 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:28:27,616 WARN L293 SmtUtils]: Spent 8.67s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)