/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-32.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:49:52,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:49:52,315 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 13:49:52,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:49:52,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:49:52,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:49:52,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:49:52,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:49:52,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:49:52,336 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:49:52,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:49:52,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:49:52,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:49:52,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:49:52,338 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:49:52,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:49:52,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:49:52,338 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:49:52,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:49:52,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:49:52,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:49:52,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:49:52,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:49:52,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:49:52,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:49:52,340 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:49:52,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:49:52,341 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:49:52,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:49:52,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:49:52,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:49:52,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:49:52,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:49:52,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:49:52,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:49:52,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:49:52,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:49:52,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:49:52,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:49:52,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:49:52,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:49:52,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:49:52,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:49:52,344 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:49:52,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:49:52,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:49:52,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:49:52,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:49:52,547 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:49:52,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-32.i [2023-12-19 13:49:53,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:49:53,831 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:49:53,833 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-32.i [2023-12-19 13:49:53,848 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1067840c/ad30de7f5af74cfdbb0693b8ce8b98b4/FLAGe04a29085 [2023-12-19 13:49:53,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1067840c/ad30de7f5af74cfdbb0693b8ce8b98b4 [2023-12-19 13:49:53,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:49:53,864 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:49:53,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:49:53,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:49:53,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:49:53,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:49:53" (1/1) ... [2023-12-19 13:49:53,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62949dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:53, skipping insertion in model container [2023-12-19 13:49:53,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:49:53" (1/1) ... [2023-12-19 13:49:53,914 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:49:54,006 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-32.i[916,929] [2023-12-19 13:49:54,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:49:54,194 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:49:54,202 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-32.i[916,929] [2023-12-19 13:49:54,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:49:54,316 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:49:54,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54 WrapperNode [2023-12-19 13:49:54,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:49:54,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:49:54,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:49:54,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:49:54,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,451 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 673 [2023-12-19 13:49:54,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:49:54,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:49:54,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:49:54,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:49:54,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,483 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,515 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 13:49:54,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:49:54,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:49:54,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:49:54,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:49:54,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (1/1) ... [2023-12-19 13:49:54,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:49:54,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:49:54,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 13:49:54,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 13:49:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:49:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:49:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:49:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:49:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:49:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:49:54,763 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:49:54,764 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:49:55,550 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:49:55,581 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:49:55,582 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:49:55,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:49:55 BoogieIcfgContainer [2023-12-19 13:49:55,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:49:55,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:49:55,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:49:55,585 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:49:55,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:49:53" (1/3) ... [2023-12-19 13:49:55,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d70808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:49:55, skipping insertion in model container [2023-12-19 13:49:55,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:49:54" (2/3) ... [2023-12-19 13:49:55,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d70808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:49:55, skipping insertion in model container [2023-12-19 13:49:55,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:49:55" (3/3) ... [2023-12-19 13:49:55,587 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-32.i [2023-12-19 13:49:55,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:49:55,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:49:55,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:49:55,642 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;@60ce50d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:49:55,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:49:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 184 states have (on average 1.6032608695652173) internal successors, (295), 185 states have internal predecessors, (295), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-19 13:49:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:49:55,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:49:55,676 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:49:55,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:49:55,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:49:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash -416553291, now seen corresponding path program 1 times [2023-12-19 13:49:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:49:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361410642] [2023-12-19 13:49:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:49:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:49:56,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:49:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361410642] [2023-12-19 13:49:56,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:49:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534288691] [2023-12-19 13:49:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:56,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:49:56,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:49:56,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:49:56,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 13:49:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:49:56,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:49:56,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:49:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2023-12-19 13:49:56,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:49:56,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534288691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:49:56,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:49:56,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:49:56,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894384875] [2023-12-19 13:49:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:49:56,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:49:56,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:49:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:49:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:49:56,508 INFO L87 Difference]: Start difference. First operand has 252 states, 184 states have (on average 1.6032608695652173) internal successors, (295), 185 states have internal predecessors, (295), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-19 13:49:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:49:56,598 INFO L93 Difference]: Finished difference Result 501 states and 913 transitions. [2023-12-19 13:49:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:49:56,610 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 452 [2023-12-19 13:49:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:49:56,616 INFO L225 Difference]: With dead ends: 501 [2023-12-19 13:49:56,616 INFO L226 Difference]: Without dead ends: 250 [2023-12-19 13:49:56,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:49:56,624 INFO L413 NwaCegarLoop]: 417 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, 417 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:49:56,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:49:56,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-19 13:49:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-12-19 13:49:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 183 states have (on average 1.5846994535519126) internal successors, (290), 183 states have internal predecessors, (290), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-19 13:49:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 420 transitions. [2023-12-19 13:49:56,677 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 420 transitions. Word has length 452 [2023-12-19 13:49:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:49:56,678 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 420 transitions. [2023-12-19 13:49:56,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-19 13:49:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 420 transitions. [2023-12-19 13:49:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:49:56,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:49:56,687 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:49:56,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 13:49:56,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 13:49:56,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:49:56,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:49:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2061796305, now seen corresponding path program 1 times [2023-12-19 13:49:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:49:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248932662] [2023-12-19 13:49:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:49:57,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:49:57,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833957288] [2023-12-19 13:49:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:57,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:49:57,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:49:57,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:49:57,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 13:49:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:49:57,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:49:57,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:49:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:49:57,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:49:57,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:49:57,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248932662] [2023-12-19 13:49:57,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:49:57,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833957288] [2023-12-19 13:49:57,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833957288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:49:57,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:49:57,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:49:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151427716] [2023-12-19 13:49:57,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:49:57,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:49:57,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:49:57,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:49:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:49:57,433 INFO L87 Difference]: Start difference. First operand 250 states and 420 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:49:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:49:57,631 INFO L93 Difference]: Finished difference Result 697 states and 1172 transitions. [2023-12-19 13:49:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:49:57,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 452 [2023-12-19 13:49:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:49:57,640 INFO L225 Difference]: With dead ends: 697 [2023-12-19 13:49:57,640 INFO L226 Difference]: Without dead ends: 448 [2023-12-19 13:49:57,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:49:57,646 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 301 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:49:57,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 919 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:49:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-19 13:49:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 445. [2023-12-19 13:49:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 339 states have (on average 1.59882005899705) internal successors, (542), 340 states have internal predecessors, (542), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 102 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-19 13:49:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 748 transitions. [2023-12-19 13:49:57,700 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 748 transitions. Word has length 452 [2023-12-19 13:49:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:49:57,703 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 748 transitions. [2023-12-19 13:49:57,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:49:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 748 transitions. [2023-12-19 13:49:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:49:57,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:49:57,713 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:49:57,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 13:49:57,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 13:49:57,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:49:57,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:49:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1164403027, now seen corresponding path program 1 times [2023-12-19 13:49:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:49:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365172814] [2023-12-19 13:49:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:49:58,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:49:58,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914976132] [2023-12-19 13:49:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:58,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:49:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:49:58,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:49:58,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 13:49:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:49:58,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:49:58,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:49:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:49:58,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:49:58,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:49:58,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365172814] [2023-12-19 13:49:58,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:49:58,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914976132] [2023-12-19 13:49:58,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914976132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:49:58,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:49:58,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:49:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247345411] [2023-12-19 13:49:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:49:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:49:58,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:49:58,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:49:58,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:49:58,420 INFO L87 Difference]: Start difference. First operand 445 states and 748 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:49:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:49:58,618 INFO L93 Difference]: Finished difference Result 1311 states and 2206 transitions. [2023-12-19 13:49:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:49:58,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 452 [2023-12-19 13:49:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:49:58,626 INFO L225 Difference]: With dead ends: 1311 [2023-12-19 13:49:58,627 INFO L226 Difference]: Without dead ends: 867 [2023-12-19 13:49:58,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:49:58,630 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 371 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:49:58,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1147 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:49:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-12-19 13:49:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 619. [2023-12-19 13:49:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 513 states have (on average 1.6705653021442495) internal successors, (857), 514 states have internal predecessors, (857), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 102 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-19 13:49:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1063 transitions. [2023-12-19 13:49:58,674 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1063 transitions. Word has length 452 [2023-12-19 13:49:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:49:58,674 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1063 transitions. [2023-12-19 13:49:58,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:49:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1063 transitions. [2023-12-19 13:49:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:49:58,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:49:58,678 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:49:58,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 13:49:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:49:58,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:49:58,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:49:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash 797171631, now seen corresponding path program 1 times [2023-12-19 13:49:58,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:49:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877577489] [2023-12-19 13:49:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:58,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:49:58,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:49:58,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597894150] [2023-12-19 13:49:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:58,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:49:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:49:58,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:49:58,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 13:49:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:49:59,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:49:59,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:49:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:49:59,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:49:59,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:49:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877577489] [2023-12-19 13:49:59,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:49:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597894150] [2023-12-19 13:49:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597894150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:49:59,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:49:59,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:49:59,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163386140] [2023-12-19 13:49:59,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:49:59,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:49:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:49:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:49:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:49:59,287 INFO L87 Difference]: Start difference. First operand 619 states and 1063 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:49:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:49:59,364 INFO L93 Difference]: Finished difference Result 1763 states and 3036 transitions. [2023-12-19 13:49:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:49:59,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 452 [2023-12-19 13:49:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:49:59,368 INFO L225 Difference]: With dead ends: 1763 [2023-12-19 13:49:59,369 INFO L226 Difference]: Without dead ends: 1145 [2023-12-19 13:49:59,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:49:59,370 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 267 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:49:59,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 814 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:49:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2023-12-19 13:49:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1142. [2023-12-19 13:49:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 956 states have (on average 1.6757322175732217) internal successors, (1602), 959 states have internal predecessors, (1602), 181 states have call successors, (181), 4 states have call predecessors, (181), 4 states have return successors, (181), 178 states have call predecessors, (181), 181 states have call successors, (181) [2023-12-19 13:49:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1964 transitions. [2023-12-19 13:49:59,402 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1964 transitions. Word has length 452 [2023-12-19 13:49:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:49:59,403 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 1964 transitions. [2023-12-19 13:49:59,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:49:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1964 transitions. [2023-12-19 13:49:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:49:59,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:49:59,406 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:49:59,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 13:49:59,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:49:59,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:49:59,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:49:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash 774539377, now seen corresponding path program 1 times [2023-12-19 13:49:59,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:49:59,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156765887] [2023-12-19 13:49:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:59,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:49:59,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:49:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342738727] [2023-12-19 13:49:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:49:59,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:49:59,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:49:59,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:49:59,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 13:49:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:49:59,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:49:59,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:00,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:00,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156765887] [2023-12-19 13:50:00,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342738727] [2023-12-19 13:50:00,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342738727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:00,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:00,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:50:00,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62804193] [2023-12-19 13:50:00,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:00,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:50:00,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:00,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:50:00,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:50:00,058 INFO L87 Difference]: Start difference. First operand 1142 states and 1964 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:00,147 INFO L93 Difference]: Finished difference Result 3021 states and 5228 transitions. [2023-12-19 13:50:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:50:00,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 452 [2023-12-19 13:50:00,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:00,155 INFO L225 Difference]: With dead ends: 3021 [2023-12-19 13:50:00,155 INFO L226 Difference]: Without dead ends: 1880 [2023-12-19 13:50:00,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:50:00,157 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 144 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:00,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 855 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:50:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-12-19 13:50:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1774. [2023-12-19 13:50:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1588 states have (on average 1.7141057934508817) internal successors, (2722), 1591 states have internal predecessors, (2722), 181 states have call successors, (181), 4 states have call predecessors, (181), 4 states have return successors, (181), 178 states have call predecessors, (181), 181 states have call successors, (181) [2023-12-19 13:50:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 3084 transitions. [2023-12-19 13:50:00,198 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 3084 transitions. Word has length 452 [2023-12-19 13:50:00,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:00,199 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 3084 transitions. [2023-12-19 13:50:00,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:00,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 3084 transitions. [2023-12-19 13:50:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:50:00,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:00,203 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:00,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:00,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:00,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:00,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash -67899601, now seen corresponding path program 1 times [2023-12-19 13:50:00,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:00,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361710990] [2023-12-19 13:50:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:00,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:00,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:00,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005560961] [2023-12-19 13:50:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:00,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:00,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:00,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:00,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 13:50:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:00,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 13:50:00,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:01,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:01,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361710990] [2023-12-19 13:50:01,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:01,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005560961] [2023-12-19 13:50:01,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005560961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:01,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:01,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:50:01,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760044975] [2023-12-19 13:50:01,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:01,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:50:01,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:50:01,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:50:01,097 INFO L87 Difference]: Start difference. First operand 1774 states and 3084 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:01,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:01,336 INFO L93 Difference]: Finished difference Result 5130 states and 8946 transitions. [2023-12-19 13:50:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:50:01,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 452 [2023-12-19 13:50:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:01,346 INFO L225 Difference]: With dead ends: 5130 [2023-12-19 13:50:01,346 INFO L226 Difference]: Without dead ends: 3357 [2023-12-19 13:50:01,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:50:01,350 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 302 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:01,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1234 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:50:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2023-12-19 13:50:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 1903. [2023-12-19 13:50:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1650 states have (on average 1.6933333333333334) internal successors, (2794), 1653 states have internal predecessors, (2794), 246 states have call successors, (246), 6 states have call predecessors, (246), 6 states have return successors, (246), 243 states have call predecessors, (246), 246 states have call successors, (246) [2023-12-19 13:50:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 3286 transitions. [2023-12-19 13:50:01,401 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 3286 transitions. Word has length 452 [2023-12-19 13:50:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:01,401 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 3286 transitions. [2023-12-19 13:50:01,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 3286 transitions. [2023-12-19 13:50:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:50:01,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:01,405 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:01,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:01,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:01,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:01,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1210402067, now seen corresponding path program 1 times [2023-12-19 13:50:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:01,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150937847] [2023-12-19 13:50:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:01,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:01,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537649226] [2023-12-19 13:50:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:01,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:01,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:01,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:01,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 13:50:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:01,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:50:01,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:02,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:02,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150937847] [2023-12-19 13:50:02,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537649226] [2023-12-19 13:50:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537649226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:02,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:50:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624282844] [2023-12-19 13:50:02,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:02,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:50:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:50:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:50:02,344 INFO L87 Difference]: Start difference. First operand 1903 states and 3286 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:02,887 INFO L93 Difference]: Finished difference Result 6791 states and 11828 transitions. [2023-12-19 13:50:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 13:50:02,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 452 [2023-12-19 13:50:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:02,902 INFO L225 Difference]: With dead ends: 6791 [2023-12-19 13:50:02,902 INFO L226 Difference]: Without dead ends: 5018 [2023-12-19 13:50:02,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:50:02,905 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 2266 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:02,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2266 Valid, 2145 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:50:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2023-12-19 13:50:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 2660. [2023-12-19 13:50:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 2298 states have (on average 1.681462140992167) internal successors, (3864), 2303 states have internal predecessors, (3864), 351 states have call successors, (351), 10 states have call predecessors, (351), 10 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 4566 transitions. [2023-12-19 13:50:02,976 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 4566 transitions. Word has length 452 [2023-12-19 13:50:02,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:02,977 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 4566 transitions. [2023-12-19 13:50:02,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 4566 transitions. [2023-12-19 13:50:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:50:02,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:02,981 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:03,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:03,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:03,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:03,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash 525704297, now seen corresponding path program 1 times [2023-12-19 13:50:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63185263] [2023-12-19 13:50:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:03,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009923642] [2023-12-19 13:50:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:03,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:03,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:03,255 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:03,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 13:50:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:03,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:50:03,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:03,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:03,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63185263] [2023-12-19 13:50:03,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009923642] [2023-12-19 13:50:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009923642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:03,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:03,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:50:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322782348] [2023-12-19 13:50:03,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:03,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:50:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:03,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:50:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:50:03,654 INFO L87 Difference]: Start difference. First operand 2660 states and 4566 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:04,445 INFO L93 Difference]: Finished difference Result 9186 states and 15644 transitions. [2023-12-19 13:50:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:50:04,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 452 [2023-12-19 13:50:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:04,465 INFO L225 Difference]: With dead ends: 9186 [2023-12-19 13:50:04,465 INFO L226 Difference]: Without dead ends: 6656 [2023-12-19 13:50:04,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:50:04,469 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1389 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:04,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 1528 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 13:50:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6656 states. [2023-12-19 13:50:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6656 to 3141. [2023-12-19 13:50:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 2779 states have (on average 1.7049298308744152) internal successors, (4738), 2784 states have internal predecessors, (4738), 351 states have call successors, (351), 10 states have call predecessors, (351), 10 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 5440 transitions. [2023-12-19 13:50:04,615 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 5440 transitions. Word has length 452 [2023-12-19 13:50:04,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:04,616 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 5440 transitions. [2023-12-19 13:50:04,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 5440 transitions. [2023-12-19 13:50:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 13:50:04,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:04,621 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:04,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:04,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 13:50:04,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:04,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash -485412953, now seen corresponding path program 1 times [2023-12-19 13:50:04,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:04,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230396110] [2023-12-19 13:50:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:04,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:04,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743381275] [2023-12-19 13:50:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:04,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:04,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:04,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:04,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 13:50:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:05,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:50:05,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2818 proven. 39 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2023-12-19 13:50:05,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 153 proven. 39 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-19 13:50:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230396110] [2023-12-19 13:50:05,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743381275] [2023-12-19 13:50:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743381275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:05,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:05,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:50:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738605335] [2023-12-19 13:50:05,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:05,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:50:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:50:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:50:05,569 INFO L87 Difference]: Start difference. First operand 3141 states and 5440 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-19 13:50:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:05,881 INFO L93 Difference]: Finished difference Result 6188 states and 10710 transitions. [2023-12-19 13:50:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 13:50:05,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 452 [2023-12-19 13:50:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:05,892 INFO L225 Difference]: With dead ends: 6188 [2023-12-19 13:50:05,892 INFO L226 Difference]: Without dead ends: 3177 [2023-12-19 13:50:05,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:50:05,897 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 303 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:05,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 869 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:50:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2023-12-19 13:50:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 3153. [2023-12-19 13:50:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 2788 states have (on average 1.6933285509325682) internal successors, (4721), 2793 states have internal predecessors, (4721), 351 states have call successors, (351), 13 states have call predecessors, (351), 13 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5423 transitions. [2023-12-19 13:50:05,992 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5423 transitions. Word has length 452 [2023-12-19 13:50:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:05,992 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 5423 transitions. [2023-12-19 13:50:05,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-19 13:50:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5423 transitions. [2023-12-19 13:50:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-19 13:50:05,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:05,997 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:06,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:06,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:06,206 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:06,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1797888210, now seen corresponding path program 1 times [2023-12-19 13:50:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:06,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366439278] [2023-12-19 13:50:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:06,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:06,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682339651] [2023-12-19 13:50:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:06,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:06,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:06,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:06,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 13:50:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:06,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:50:06,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2892 proven. 150 refuted. 0 times theorem prover too weak. 5278 trivial. 0 not checked. [2023-12-19 13:50:07,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 42 proven. 150 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-19 13:50:07,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366439278] [2023-12-19 13:50:07,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682339651] [2023-12-19 13:50:07,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682339651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:07,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:07,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 13:50:07,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266785360] [2023-12-19 13:50:07,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:07,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 13:50:07,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 13:50:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:50:07,830 INFO L87 Difference]: Start difference. First operand 3153 states and 5423 transitions. Second operand has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-19 13:50:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:08,809 INFO L93 Difference]: Finished difference Result 8831 states and 15292 transitions. [2023-12-19 13:50:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 13:50:08,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 453 [2023-12-19 13:50:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:08,834 INFO L225 Difference]: With dead ends: 8831 [2023-12-19 13:50:08,834 INFO L226 Difference]: Without dead ends: 5812 [2023-12-19 13:50:08,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-19 13:50:08,839 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1418 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:08,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1782 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 13:50:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2023-12-19 13:50:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4532. [2023-12-19 13:50:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 4166 states have (on average 1.7215554488718194) internal successors, (7172), 4171 states have internal predecessors, (7172), 351 states have call successors, (351), 14 states have call predecessors, (351), 14 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 7874 transitions. [2023-12-19 13:50:08,962 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 7874 transitions. Word has length 453 [2023-12-19 13:50:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:08,963 INFO L495 AbstractCegarLoop]: Abstraction has 4532 states and 7874 transitions. [2023-12-19 13:50:08,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-12-19 13:50:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 7874 transitions. [2023-12-19 13:50:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 13:50:08,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:08,969 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:08,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:09,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 13:50:09,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:09,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash 378633065, now seen corresponding path program 1 times [2023-12-19 13:50:09,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:09,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744990078] [2023-12-19 13:50:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:09,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:09,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700369512] [2023-12-19 13:50:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:09,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:09,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:09,238 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:09,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 13:50:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:09,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:50:09,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:09,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:09,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:09,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744990078] [2023-12-19 13:50:09,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700369512] [2023-12-19 13:50:09,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700369512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:09,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:09,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:50:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704046186] [2023-12-19 13:50:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:09,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:50:09,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:50:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:50:09,563 INFO L87 Difference]: Start difference. First operand 4532 states and 7874 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:09,933 INFO L93 Difference]: Finished difference Result 8019 states and 13744 transitions. [2023-12-19 13:50:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:50:09,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 455 [2023-12-19 13:50:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:09,941 INFO L225 Difference]: With dead ends: 8019 [2023-12-19 13:50:09,941 INFO L226 Difference]: Without dead ends: 4649 [2023-12-19 13:50:09,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:50:09,945 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 651 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:09,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 952 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:50:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2023-12-19 13:50:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 3542. [2023-12-19 13:50:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3176 states have (on average 1.672544080604534) internal successors, (5312), 3181 states have internal predecessors, (5312), 351 states have call successors, (351), 14 states have call predecessors, (351), 14 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 6014 transitions. [2023-12-19 13:50:10,064 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 6014 transitions. Word has length 455 [2023-12-19 13:50:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:10,064 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 6014 transitions. [2023-12-19 13:50:10,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 6014 transitions. [2023-12-19 13:50:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 13:50:10,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:10,069 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:10,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 13:50:10,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:10,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash -686877083, now seen corresponding path program 1 times [2023-12-19 13:50:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:10,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772607313] [2023-12-19 13:50:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:10,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:10,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677230426] [2023-12-19 13:50:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:10,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:10,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:10,344 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:10,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 13:50:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:10,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:50:10,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2584 proven. 156 refuted. 0 times theorem prover too weak. 5580 trivial. 0 not checked. [2023-12-19 13:50:10,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 36 proven. 156 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-19 13:50:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772607313] [2023-12-19 13:50:11,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677230426] [2023-12-19 13:50:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677230426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:11,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:11,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 13:50:11,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634488845] [2023-12-19 13:50:11,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:11,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:50:11,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:50:11,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 13:50:11,305 INFO L87 Difference]: Start difference. First operand 3542 states and 6014 transitions. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-19 13:50:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:11,756 INFO L93 Difference]: Finished difference Result 6544 states and 11096 transitions. [2023-12-19 13:50:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:50:11,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 455 [2023-12-19 13:50:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:11,762 INFO L225 Difference]: With dead ends: 6544 [2023-12-19 13:50:11,762 INFO L226 Difference]: Without dead ends: 3588 [2023-12-19 13:50:11,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:50:11,766 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 408 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:11,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1063 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:50:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2023-12-19 13:50:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3570. [2023-12-19 13:50:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3197 states have (on average 1.6568658116984674) internal successors, (5297), 3202 states have internal predecessors, (5297), 351 states have call successors, (351), 21 states have call predecessors, (351), 21 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 5999 transitions. [2023-12-19 13:50:11,871 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 5999 transitions. Word has length 455 [2023-12-19 13:50:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:11,871 INFO L495 AbstractCegarLoop]: Abstraction has 3570 states and 5999 transitions. [2023-12-19 13:50:11,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-19 13:50:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 5999 transitions. [2023-12-19 13:50:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 13:50:11,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:11,875 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:11,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:12,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 13:50:12,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:12,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 557197495, now seen corresponding path program 1 times [2023-12-19 13:50:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587867705] [2023-12-19 13:50:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:12,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:12,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274322315] [2023-12-19 13:50:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:12,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:12,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:12,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:12,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 13:50:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:12,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:50:12,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1774 proven. 21 refuted. 0 times theorem prover too weak. 6525 trivial. 0 not checked. [2023-12-19 13:50:12,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 171 proven. 21 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-19 13:50:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587867705] [2023-12-19 13:50:12,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274322315] [2023-12-19 13:50:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274322315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:12,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:12,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:50:12,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238492419] [2023-12-19 13:50:12,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:12,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:50:12,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:50:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:50:12,779 INFO L87 Difference]: Start difference. First operand 3570 states and 5999 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 13:50:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:13,229 INFO L93 Difference]: Finished difference Result 6910 states and 11605 transitions. [2023-12-19 13:50:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:50:13,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 456 [2023-12-19 13:50:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:13,235 INFO L225 Difference]: With dead ends: 6910 [2023-12-19 13:50:13,235 INFO L226 Difference]: Without dead ends: 3606 [2023-12-19 13:50:13,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 904 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:50:13,239 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 790 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:13,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 888 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:50:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2023-12-19 13:50:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3582. [2023-12-19 13:50:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3206 states have (on average 1.6363069245165316) internal successors, (5246), 3211 states have internal predecessors, (5246), 351 states have call successors, (351), 24 states have call predecessors, (351), 24 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 5948 transitions. [2023-12-19 13:50:13,340 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 5948 transitions. Word has length 456 [2023-12-19 13:50:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:13,340 INFO L495 AbstractCegarLoop]: Abstraction has 3582 states and 5948 transitions. [2023-12-19 13:50:13,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 13:50:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 5948 transitions. [2023-12-19 13:50:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 13:50:13,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:13,344 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:13,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 13:50:13,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 13:50:13,554 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:13,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:13,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1265686195, now seen corresponding path program 1 times [2023-12-19 13:50:13,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:13,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642394423] [2023-12-19 13:50:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:13,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:13,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771417713] [2023-12-19 13:50:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:13,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:13,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:13,608 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:13,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 13:50:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:13,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 13:50:13,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:14,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:14,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642394423] [2023-12-19 13:50:14,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:14,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771417713] [2023-12-19 13:50:14,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771417713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:14,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:14,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:50:14,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480016539] [2023-12-19 13:50:14,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:14,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:50:14,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:14,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:50:14,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:50:14,357 INFO L87 Difference]: Start difference. First operand 3582 states and 5948 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:14,848 INFO L93 Difference]: Finished difference Result 9977 states and 16488 transitions. [2023-12-19 13:50:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 13:50:14,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-12-19 13:50:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:14,859 INFO L225 Difference]: With dead ends: 9977 [2023-12-19 13:50:14,859 INFO L226 Difference]: Without dead ends: 7049 [2023-12-19 13:50:14,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:50:14,864 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1497 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:14,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 3030 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:50:14,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7049 states. [2023-12-19 13:50:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7049 to 4014. [2023-12-19 13:50:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 3638 states have (on average 1.6245189664650908) internal successors, (5910), 3643 states have internal predecessors, (5910), 351 states have call successors, (351), 24 states have call predecessors, (351), 24 states have return successors, (351), 346 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 13:50:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 6612 transitions. [2023-12-19 13:50:15,039 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 6612 transitions. Word has length 456 [2023-12-19 13:50:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:15,040 INFO L495 AbstractCegarLoop]: Abstraction has 4014 states and 6612 transitions. [2023-12-19 13:50:15,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:15,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 6612 transitions. [2023-12-19 13:50:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 13:50:15,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:15,045 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:15,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 13:50:15,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:15,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:15,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1805404, now seen corresponding path program 1 times [2023-12-19 13:50:15,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:15,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646998917] [2023-12-19 13:50:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:15,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:15,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750853293] [2023-12-19 13:50:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:15,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:15,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:15,298 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:15,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 13:50:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:15,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:50:15,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:15,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:15,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646998917] [2023-12-19 13:50:15,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:15,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750853293] [2023-12-19 13:50:15,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750853293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:15,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:15,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:50:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712414735] [2023-12-19 13:50:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:15,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:50:15,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:50:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:50:15,731 INFO L87 Difference]: Start difference. First operand 4014 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:15,868 INFO L93 Difference]: Finished difference Result 11234 states and 18600 transitions. [2023-12-19 13:50:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:50:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 457 [2023-12-19 13:50:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:15,879 INFO L225 Difference]: With dead ends: 11234 [2023-12-19 13:50:15,879 INFO L226 Difference]: Without dead ends: 7378 [2023-12-19 13:50:15,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:50:15,884 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 162 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:15,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 811 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:50:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2023-12-19 13:50:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 7370. [2023-12-19 13:50:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7370 states, 6964 states have (on average 1.6390005743825389) internal successors, (11414), 6975 states have internal predecessors, (11414), 375 states have call successors, (375), 30 states have call predecessors, (375), 30 states have return successors, (375), 364 states have call predecessors, (375), 375 states have call successors, (375) [2023-12-19 13:50:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 12164 transitions. [2023-12-19 13:50:16,040 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 12164 transitions. Word has length 457 [2023-12-19 13:50:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:16,041 INFO L495 AbstractCegarLoop]: Abstraction has 7370 states and 12164 transitions. [2023-12-19 13:50:16,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 12164 transitions. [2023-12-19 13:50:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 13:50:16,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:16,049 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:16,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:16,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 13:50:16,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:16,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash -954111172, now seen corresponding path program 1 times [2023-12-19 13:50:16,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:16,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94833202] [2023-12-19 13:50:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:16,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:16,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:16,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511768569] [2023-12-19 13:50:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:16,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:16,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:16,301 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:16,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 13:50:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:16,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 13:50:16,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:17,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:17,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:17,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94833202] [2023-12-19 13:50:17,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:17,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511768569] [2023-12-19 13:50:17,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511768569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:17,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:17,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 13:50:17,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795994174] [2023-12-19 13:50:17,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:17,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 13:50:17,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:17,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 13:50:17,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:50:17,459 INFO L87 Difference]: Start difference. First operand 7370 states and 12164 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:20,248 INFO L93 Difference]: Finished difference Result 40479 states and 66791 transitions. [2023-12-19 13:50:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 13:50:20,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 457 [2023-12-19 13:50:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:20,288 INFO L225 Difference]: With dead ends: 40479 [2023-12-19 13:50:20,289 INFO L226 Difference]: Without dead ends: 33293 [2023-12-19 13:50:20,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=433, Invalid=1289, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 13:50:20,296 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 12948 mSDsluCounter, 4216 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12948 SdHoareTripleChecker+Valid, 4719 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:20,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12948 Valid, 4719 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 13:50:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33293 states. [2023-12-19 13:50:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33293 to 16719. [2023-12-19 13:50:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16719 states, 15960 states have (on average 1.6394736842105264) internal successors, (26166), 15988 states have internal predecessors, (26166), 685 states have call successors, (685), 73 states have call predecessors, (685), 73 states have return successors, (685), 657 states have call predecessors, (685), 685 states have call successors, (685) [2023-12-19 13:50:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16719 states to 16719 states and 27536 transitions. [2023-12-19 13:50:20,792 INFO L78 Accepts]: Start accepts. Automaton has 16719 states and 27536 transitions. Word has length 457 [2023-12-19 13:50:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:20,793 INFO L495 AbstractCegarLoop]: Abstraction has 16719 states and 27536 transitions. [2023-12-19 13:50:20,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 16719 states and 27536 transitions. [2023-12-19 13:50:20,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 13:50:20,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:20,808 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:20,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 13:50:21,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 13:50:21,016 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:21,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash 969116862, now seen corresponding path program 1 times [2023-12-19 13:50:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:21,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70957488] [2023-12-19 13:50:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:21,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:21,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:21,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412651652] [2023-12-19 13:50:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:21,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:21,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:21,061 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:21,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 13:50:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:21,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 13:50:21,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4258 proven. 186 refuted. 0 times theorem prover too weak. 3876 trivial. 0 not checked. [2023-12-19 13:50:22,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 192 proven. 189 refuted. 0 times theorem prover too weak. 7939 trivial. 0 not checked. [2023-12-19 13:50:22,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:22,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70957488] [2023-12-19 13:50:22,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:22,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412651652] [2023-12-19 13:50:22,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412651652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:22,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:22,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2023-12-19 13:50:22,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016401980] [2023-12-19 13:50:22,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:22,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 13:50:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 13:50:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-12-19 13:50:22,381 INFO L87 Difference]: Start difference. First operand 16719 states and 27536 transitions. Second operand has 18 states, 17 states have (on average 13.0) internal successors, (221), 16 states have internal predecessors, (221), 5 states have call successors, (97), 3 states have call predecessors, (97), 6 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-19 13:50:24,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:24,703 INFO L93 Difference]: Finished difference Result 54056 states and 89115 transitions. [2023-12-19 13:50:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-19 13:50:24,703 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 13.0) internal successors, (221), 16 states have internal predecessors, (221), 5 states have call successors, (97), 3 states have call predecessors, (97), 6 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) Word has length 457 [2023-12-19 13:50:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:24,786 INFO L225 Difference]: With dead ends: 54056 [2023-12-19 13:50:24,787 INFO L226 Difference]: Without dead ends: 40094 [2023-12-19 13:50:24,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=616, Invalid=1736, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 13:50:24,809 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 2422 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:24,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 3374 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 13:50:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40094 states. [2023-12-19 13:50:25,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40094 to 21244. [2023-12-19 13:50:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21244 states, 20102 states have (on average 1.619540344244354) internal successors, (32556), 20145 states have internal predecessors, (32556), 995 states have call successors, (995), 146 states have call predecessors, (995), 146 states have return successors, (995), 952 states have call predecessors, (995), 995 states have call successors, (995) [2023-12-19 13:50:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21244 states to 21244 states and 34546 transitions. [2023-12-19 13:50:25,505 INFO L78 Accepts]: Start accepts. Automaton has 21244 states and 34546 transitions. Word has length 457 [2023-12-19 13:50:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:25,505 INFO L495 AbstractCegarLoop]: Abstraction has 21244 states and 34546 transitions. [2023-12-19 13:50:25,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 13.0) internal successors, (221), 16 states have internal predecessors, (221), 5 states have call successors, (97), 3 states have call predecessors, (97), 6 states have return successors, (98), 5 states have call predecessors, (98), 5 states have call successors, (98) [2023-12-19 13:50:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 21244 states and 34546 transitions. [2023-12-19 13:50:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 13:50:25,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:25,516 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:25,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 13:50:25,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 13:50:25,724 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:25,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:25,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1417392644, now seen corresponding path program 1 times [2023-12-19 13:50:25,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:25,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638065172] [2023-12-19 13:50:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:25,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787810080] [2023-12-19 13:50:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:25,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:25,767 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:25,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 13:50:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:26,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:50:26,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:26,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:26,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:26,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638065172] [2023-12-19 13:50:26,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:26,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787810080] [2023-12-19 13:50:26,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787810080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:26,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:26,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:50:26,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216556712] [2023-12-19 13:50:26,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:26,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:50:26,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:50:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:50:26,203 INFO L87 Difference]: Start difference. First operand 21244 states and 34546 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:26,721 INFO L93 Difference]: Finished difference Result 34487 states and 56056 transitions. [2023-12-19 13:50:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:50:26,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 457 [2023-12-19 13:50:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:26,741 INFO L225 Difference]: With dead ends: 34487 [2023-12-19 13:50:26,741 INFO L226 Difference]: Without dead ends: 16897 [2023-12-19 13:50:26,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:50:26,757 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 260 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:26,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 966 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:50:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16897 states. [2023-12-19 13:50:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16897 to 13554. [2023-12-19 13:50:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13554 states, 13122 states have (on average 1.5976985215668342) internal successors, (20965), 13135 states have internal predecessors, (20965), 375 states have call successors, (375), 56 states have call predecessors, (375), 56 states have return successors, (375), 362 states have call predecessors, (375), 375 states have call successors, (375) [2023-12-19 13:50:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13554 states to 13554 states and 21715 transitions. [2023-12-19 13:50:27,127 INFO L78 Accepts]: Start accepts. Automaton has 13554 states and 21715 transitions. Word has length 457 [2023-12-19 13:50:27,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:27,128 INFO L495 AbstractCegarLoop]: Abstraction has 13554 states and 21715 transitions. [2023-12-19 13:50:27,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 13554 states and 21715 transitions. [2023-12-19 13:50:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 13:50:27,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:27,135 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:27,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 13:50:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 13:50:27,343 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:27,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash 240931582, now seen corresponding path program 1 times [2023-12-19 13:50:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:27,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450015132] [2023-12-19 13:50:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:27,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:27,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921036836] [2023-12-19 13:50:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:27,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:27,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:27,396 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:27,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 13:50:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:27,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 13:50:27,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:27,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:27,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:27,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450015132] [2023-12-19 13:50:27,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:27,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921036836] [2023-12-19 13:50:27,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921036836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:27,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:27,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:50:27,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386474186] [2023-12-19 13:50:27,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:27,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:50:27,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:27,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:50:27,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:50:27,896 INFO L87 Difference]: Start difference. First operand 13554 states and 21715 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:28,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:28,811 INFO L93 Difference]: Finished difference Result 39764 states and 64282 transitions. [2023-12-19 13:50:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:50:28,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 457 [2023-12-19 13:50:28,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:28,843 INFO L225 Difference]: With dead ends: 39764 [2023-12-19 13:50:28,843 INFO L226 Difference]: Without dead ends: 29347 [2023-12-19 13:50:28,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:50:28,856 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 748 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:28,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1843 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 13:50:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29347 states. [2023-12-19 13:50:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29347 to 18556. [2023-12-19 13:50:29,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18556 states, 18124 states have (on average 1.6070955638931803) internal successors, (29127), 18137 states have internal predecessors, (29127), 375 states have call successors, (375), 56 states have call predecessors, (375), 56 states have return successors, (375), 362 states have call predecessors, (375), 375 states have call successors, (375) [2023-12-19 13:50:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18556 states to 18556 states and 29877 transitions. [2023-12-19 13:50:29,346 INFO L78 Accepts]: Start accepts. Automaton has 18556 states and 29877 transitions. Word has length 457 [2023-12-19 13:50:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:29,346 INFO L495 AbstractCegarLoop]: Abstraction has 18556 states and 29877 transitions. [2023-12-19 13:50:29,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 18556 states and 29877 transitions. [2023-12-19 13:50:29,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 13:50:29,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:29,356 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:29,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:29,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:29,564 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:29,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash -78157958, now seen corresponding path program 1 times [2023-12-19 13:50:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793139731] [2023-12-19 13:50:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:29,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557805353] [2023-12-19 13:50:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:29,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:29,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:29,615 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:29,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 13:50:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:30,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:50:30,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3984 proven. 72 refuted. 0 times theorem prover too weak. 4264 trivial. 0 not checked. [2023-12-19 13:50:30,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 120 proven. 72 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-19 13:50:30,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793139731] [2023-12-19 13:50:30,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557805353] [2023-12-19 13:50:30,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557805353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:30,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:30,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:50:30,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838526988] [2023-12-19 13:50:30,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:30,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:50:30,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:30,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:50:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:50:30,398 INFO L87 Difference]: Start difference. First operand 18556 states and 29877 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-19 13:50:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:30,917 INFO L93 Difference]: Finished difference Result 25631 states and 41199 transitions. [2023-12-19 13:50:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 13:50:30,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 457 [2023-12-19 13:50:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:30,928 INFO L225 Difference]: With dead ends: 25631 [2023-12-19 13:50:30,928 INFO L226 Difference]: Without dead ends: 8663 [2023-12-19 13:50:30,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 906 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:50:30,942 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 757 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:30,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 858 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:50:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8663 states. [2023-12-19 13:50:31,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8663 to 8551. [2023-12-19 13:50:31,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8551 states, 8116 states have (on average 1.5805815672745194) internal successors, (12828), 8129 states have internal predecessors, (12828), 375 states have call successors, (375), 59 states have call predecessors, (375), 59 states have return successors, (375), 362 states have call predecessors, (375), 375 states have call successors, (375) [2023-12-19 13:50:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8551 states to 8551 states and 13578 transitions. [2023-12-19 13:50:31,304 INFO L78 Accepts]: Start accepts. Automaton has 8551 states and 13578 transitions. Word has length 457 [2023-12-19 13:50:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:31,304 INFO L495 AbstractCegarLoop]: Abstraction has 8551 states and 13578 transitions. [2023-12-19 13:50:31,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-19 13:50:31,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8551 states and 13578 transitions. [2023-12-19 13:50:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 13:50:31,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:31,309 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:31,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:31,518 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 [2023-12-19 13:50:31,518 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:31,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:31,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1397924032, now seen corresponding path program 1 times [2023-12-19 13:50:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:31,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358865366] [2023-12-19 13:50:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:31,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848936500] [2023-12-19 13:50:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:31,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:31,570 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) [2023-12-19 13:50:31,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 13:50:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:32,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:50:32,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:32,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358865366] [2023-12-19 13:50:32,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848936500] [2023-12-19 13:50:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848936500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:32,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:50:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943077678] [2023-12-19 13:50:32,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:32,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:50:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:50:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:50:32,376 INFO L87 Difference]: Start difference. First operand 8551 states and 13578 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:32,903 INFO L93 Difference]: Finished difference Result 29960 states and 47803 transitions. [2023-12-19 13:50:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:50:32,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 458 [2023-12-19 13:50:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:32,927 INFO L225 Difference]: With dead ends: 29960 [2023-12-19 13:50:32,927 INFO L226 Difference]: Without dead ends: 21611 [2023-12-19 13:50:32,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:50:32,939 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 506 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:32,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1362 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:50:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21611 states. [2023-12-19 13:50:33,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21611 to 16609. [2023-12-19 13:50:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16609 states, 15815 states have (on average 1.5833702181473286) internal successors, (25041), 15841 states have internal predecessors, (25041), 685 states have call successors, (685), 108 states have call predecessors, (685), 108 states have return successors, (685), 659 states have call predecessors, (685), 685 states have call successors, (685) [2023-12-19 13:50:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16609 states to 16609 states and 26411 transitions. [2023-12-19 13:50:33,649 INFO L78 Accepts]: Start accepts. Automaton has 16609 states and 26411 transitions. Word has length 458 [2023-12-19 13:50:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:33,649 INFO L495 AbstractCegarLoop]: Abstraction has 16609 states and 26411 transitions. [2023-12-19 13:50:33,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 16609 states and 26411 transitions. [2023-12-19 13:50:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 13:50:33,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:33,658 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:33,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:33,866 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 [2023-12-19 13:50:33,866 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:33,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash 479139198, now seen corresponding path program 1 times [2023-12-19 13:50:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:33,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880138923] [2023-12-19 13:50:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:33,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:33,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334096102] [2023-12-19 13:50:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:33,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:33,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:33,909 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) [2023-12-19 13:50:33,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 13:50:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:34,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:50:34,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:35,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:35,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880138923] [2023-12-19 13:50:35,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334096102] [2023-12-19 13:50:35,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334096102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:35,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:50:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571956422] [2023-12-19 13:50:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:35,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:50:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:50:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:50:35,209 INFO L87 Difference]: Start difference. First operand 16609 states and 26411 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:36,089 INFO L93 Difference]: Finished difference Result 34880 states and 55522 transitions. [2023-12-19 13:50:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 13:50:36,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 458 [2023-12-19 13:50:36,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:36,112 INFO L225 Difference]: With dead ends: 34880 [2023-12-19 13:50:36,113 INFO L226 Difference]: Without dead ends: 18471 [2023-12-19 13:50:36,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:50:36,127 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 538 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:36,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1474 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:50:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2023-12-19 13:50:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 16609. [2023-12-19 13:50:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16609 states, 15815 states have (on average 1.5833069870376224) internal successors, (25040), 15841 states have internal predecessors, (25040), 685 states have call successors, (685), 108 states have call predecessors, (685), 108 states have return successors, (685), 659 states have call predecessors, (685), 685 states have call successors, (685) [2023-12-19 13:50:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16609 states to 16609 states and 26410 transitions. [2023-12-19 13:50:36,661 INFO L78 Accepts]: Start accepts. Automaton has 16609 states and 26410 transitions. Word has length 458 [2023-12-19 13:50:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:36,661 INFO L495 AbstractCegarLoop]: Abstraction has 16609 states and 26410 transitions. [2023-12-19 13:50:36,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16609 states and 26410 transitions. [2023-12-19 13:50:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 13:50:36,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:36,668 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:36,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-19 13:50:36,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:36,876 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:36,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1523919593, now seen corresponding path program 1 times [2023-12-19 13:50:36,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:36,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205178673] [2023-12-19 13:50:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:36,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:36,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743633790] [2023-12-19 13:50:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:36,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:36,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:36,915 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:36,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 13:50:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:37,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 13:50:37,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-19 13:50:37,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:50:37,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205178673] [2023-12-19 13:50:37,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743633790] [2023-12-19 13:50:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743633790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:50:37,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:50:37,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:50:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425764715] [2023-12-19 13:50:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:50:37,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:50:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:50:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:50:37,450 INFO L87 Difference]: Start difference. First operand 16609 states and 26410 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:38,892 INFO L93 Difference]: Finished difference Result 51702 states and 82421 transitions. [2023-12-19 13:50:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 13:50:38,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 459 [2023-12-19 13:50:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:38,930 INFO L225 Difference]: With dead ends: 51702 [2023-12-19 13:50:38,930 INFO L226 Difference]: Without dead ends: 37028 [2023-12-19 13:50:38,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:50:38,948 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 2156 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:38,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 2275 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 13:50:38,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37028 states. [2023-12-19 13:50:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37028 to 25704. [2023-12-19 13:50:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25704 states, 24697 states have (on average 1.5840385471919667) internal successors, (39121), 24733 states have internal predecessors, (39121), 861 states have call successors, (861), 145 states have call predecessors, (861), 145 states have return successors, (861), 825 states have call predecessors, (861), 861 states have call successors, (861) [2023-12-19 13:50:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25704 states to 25704 states and 40843 transitions. [2023-12-19 13:50:39,746 INFO L78 Accepts]: Start accepts. Automaton has 25704 states and 40843 transitions. Word has length 459 [2023-12-19 13:50:39,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:39,746 INFO L495 AbstractCegarLoop]: Abstraction has 25704 states and 40843 transitions. [2023-12-19 13:50:39,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-19 13:50:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 25704 states and 40843 transitions. [2023-12-19 13:50:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 13:50:39,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:39,755 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:39,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:39,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:39,963 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:39,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:39,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1369810729, now seen corresponding path program 1 times [2023-12-19 13:50:39,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:39,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770193013] [2023-12-19 13:50:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:39,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:39,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993521086] [2023-12-19 13:50:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:39,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:40,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:40,018 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:40,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 13:50:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:40,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:50:40,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 802 proven. 183 refuted. 0 times theorem prover too weak. 7335 trivial. 0 not checked. [2023-12-19 13:50:40,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 9 proven. 183 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-19 13:50:41,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770193013] [2023-12-19 13:50:41,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993521086] [2023-12-19 13:50:41,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993521086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:41,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:41,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:50:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334160190] [2023-12-19 13:50:41,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:41,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:50:41,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:50:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:50:41,053 INFO L87 Difference]: Start difference. First operand 25704 states and 40843 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-19 13:50:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:41,761 INFO L93 Difference]: Finished difference Result 40556 states and 64394 transitions. [2023-12-19 13:50:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:50:41,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 459 [2023-12-19 13:50:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:41,781 INFO L225 Difference]: With dead ends: 40556 [2023-12-19 13:50:41,781 INFO L226 Difference]: Without dead ends: 16740 [2023-12-19 13:50:41,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 910 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:50:41,801 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 244 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:41,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 840 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:50:41,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16740 states. [2023-12-19 13:50:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16740 to 14172. [2023-12-19 13:50:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14172 states, 13419 states have (on average 1.569714583799091) internal successors, (21064), 13433 states have internal predecessors, (21064), 649 states have call successors, (649), 103 states have call predecessors, (649), 103 states have return successors, (649), 635 states have call predecessors, (649), 649 states have call successors, (649) [2023-12-19 13:50:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14172 states to 14172 states and 22362 transitions. [2023-12-19 13:50:42,449 INFO L78 Accepts]: Start accepts. Automaton has 14172 states and 22362 transitions. Word has length 459 [2023-12-19 13:50:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:42,450 INFO L495 AbstractCegarLoop]: Abstraction has 14172 states and 22362 transitions. [2023-12-19 13:50:42,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (126), 2 states have call predecessors, (126), 4 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2023-12-19 13:50:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 14172 states and 22362 transitions. [2023-12-19 13:50:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-19 13:50:42,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:42,456 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:42,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:42,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:42,663 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:42,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:42,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1842384941, now seen corresponding path program 1 times [2023-12-19 13:50:42,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:42,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792084928] [2023-12-19 13:50:42,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:42,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:42,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267671161] [2023-12-19 13:50:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:42,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:42,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:42,714 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:42,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 13:50:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:50:43,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 13:50:43,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:50:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3970 proven. 462 refuted. 0 times theorem prover too weak. 3888 trivial. 0 not checked. [2023-12-19 13:50:44,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:50:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 96 proven. 471 refuted. 0 times theorem prover too weak. 7753 trivial. 0 not checked. [2023-12-19 13:50:44,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:50:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792084928] [2023-12-19 13:50:44,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:50:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267671161] [2023-12-19 13:50:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267671161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:50:44,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:50:44,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-19 13:50:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419856606] [2023-12-19 13:50:44,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:50:44,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 13:50:44,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:50:44,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 13:50:44,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2023-12-19 13:50:44,863 INFO L87 Difference]: Start difference. First operand 14172 states and 22362 transitions. Second operand has 24 states, 23 states have (on average 10.73913043478261) internal successors, (247), 22 states have internal predecessors, (247), 7 states have call successors, (123), 4 states have call predecessors, (123), 9 states have return successors, (124), 7 states have call predecessors, (124), 7 states have call successors, (124) [2023-12-19 13:50:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:50:47,050 INFO L93 Difference]: Finished difference Result 50687 states and 80135 transitions. [2023-12-19 13:50:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 13:50:47,051 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 10.73913043478261) internal successors, (247), 22 states have internal predecessors, (247), 7 states have call successors, (123), 4 states have call predecessors, (123), 9 states have return successors, (124), 7 states have call predecessors, (124), 7 states have call successors, (124) Word has length 460 [2023-12-19 13:50:47,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:50:47,095 INFO L225 Difference]: With dead ends: 50687 [2023-12-19 13:50:47,095 INFO L226 Difference]: Without dead ends: 36695 [2023-12-19 13:50:47,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=523, Invalid=1457, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 13:50:47,114 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 2622 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:50:47,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 2245 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 13:50:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36695 states. [2023-12-19 13:50:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36695 to 27603. [2023-12-19 13:50:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27603 states, 26462 states have (on average 1.5509409719597913) internal successors, (41041), 26494 states have internal predecessors, (41041), 925 states have call successors, (925), 215 states have call predecessors, (925), 215 states have return successors, (925), 893 states have call predecessors, (925), 925 states have call successors, (925) [2023-12-19 13:50:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27603 states to 27603 states and 42891 transitions. [2023-12-19 13:50:48,114 INFO L78 Accepts]: Start accepts. Automaton has 27603 states and 42891 transitions. Word has length 460 [2023-12-19 13:50:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:50:48,115 INFO L495 AbstractCegarLoop]: Abstraction has 27603 states and 42891 transitions. [2023-12-19 13:50:48,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 10.73913043478261) internal successors, (247), 22 states have internal predecessors, (247), 7 states have call successors, (123), 4 states have call predecessors, (123), 9 states have return successors, (124), 7 states have call predecessors, (124), 7 states have call successors, (124) [2023-12-19 13:50:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 27603 states and 42891 transitions. [2023-12-19 13:50:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-19 13:50:48,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:50:48,125 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:50:48,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 13:50:48,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 13:50:48,334 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:50:48,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:50:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash 85887761, now seen corresponding path program 1 times [2023-12-19 13:50:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:50:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946890748] [2023-12-19 13:50:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:48,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:50:48,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:50:48,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972662546] [2023-12-19 13:50:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:50:48,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:50:48,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:50:48,374 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:50:48,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 13:51:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:51:24,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 13:51:24,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:51:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3762 proven. 540 refuted. 0 times theorem prover too weak. 4018 trivial. 0 not checked. [2023-12-19 13:51:26,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:51:27,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:51:27,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946890748] [2023-12-19 13:51:27,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:51:27,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972662546] [2023-12-19 13:51:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972662546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 13:51:27,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:51:27,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-12-19 13:51:27,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754773608] [2023-12-19 13:51:27,493 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 13:51:27,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 13:51:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:51:27,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 13:51:27,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-12-19 13:51:27,494 INFO L87 Difference]: Start difference. First operand 27603 states and 42891 transitions. Second operand has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 14 states have internal predecessors, (156), 5 states have call successors, (65), 5 states have call predecessors, (65), 7 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2023-12-19 13:51:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:51:31,361 INFO L93 Difference]: Finished difference Result 81781 states and 126548 transitions. [2023-12-19 13:51:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 13:51:31,362 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 14 states have internal predecessors, (156), 5 states have call successors, (65), 5 states have call predecessors, (65), 7 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) Word has length 460 [2023-12-19 13:51:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:51:31,431 INFO L225 Difference]: With dead ends: 81781 [2023-12-19 13:51:31,431 INFO L226 Difference]: Without dead ends: 54797 [2023-12-19 13:51:31,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=523, Invalid=1547, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 13:51:31,459 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 681 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:51:31,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 2875 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 13:51:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54797 states. [2023-12-19 13:51:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54797 to 54301. [2023-12-19 13:51:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54301 states, 52145 states have (on average 1.5385943043436572) internal successors, (80230), 52209 states have internal predecessors, (80230), 1689 states have call successors, (1689), 466 states have call predecessors, (1689), 466 states have return successors, (1689), 1625 states have call predecessors, (1689), 1689 states have call successors, (1689) [2023-12-19 13:51:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54301 states to 54301 states and 83608 transitions. [2023-12-19 13:51:33,381 INFO L78 Accepts]: Start accepts. Automaton has 54301 states and 83608 transitions. Word has length 460 [2023-12-19 13:51:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:51:33,382 INFO L495 AbstractCegarLoop]: Abstraction has 54301 states and 83608 transitions. [2023-12-19 13:51:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 14 states have internal predecessors, (156), 5 states have call successors, (65), 5 states have call predecessors, (65), 7 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2023-12-19 13:51:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 54301 states and 83608 transitions. [2023-12-19 13:51:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-19 13:51:33,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:51:33,418 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:51:33,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 13:51:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 13:51:33,619 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:51:33,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:51:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 126562511, now seen corresponding path program 1 times [2023-12-19 13:51:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:51:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789399132] [2023-12-19 13:51:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:33,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:51:33,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:51:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837529944] [2023-12-19 13:51:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:51:33,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:51:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:51:33,656 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:51:33,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 14:04:23,301 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 14:04:23,301 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 14:04:24,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 14:04:24,502 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forcibly destroying the process [2023-12-19 14:04:24,515 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 14:04:24,516 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 14:04:24,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 14:04:24,517 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 461 with TraceHistMax 65,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 14:04:24,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 137 [2023-12-19 14:04:24,526 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:04:24,547 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 14:04:24,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 02:04:24 BoogieIcfgContainer [2023-12-19 14:04:24,550 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 14:04:24,550 INFO L158 Benchmark]: Toolchain (without parser) took 870685.89ms. Allocated memory was 296.7MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 242.2MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 812.9MB. Max. memory is 8.0GB. [2023-12-19 14:04:24,552 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 154.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 14:04:24,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.70ms. Allocated memory is still 296.7MB. Free memory was 241.7MB in the beginning and 205.5MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-19 14:04:24,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 133.68ms. Allocated memory is still 296.7MB. Free memory was 205.5MB in the beginning and 253.7MB in the end (delta: -48.2MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. [2023-12-19 14:04:24,553 INFO L158 Benchmark]: Boogie Preprocessor took 137.60ms. Allocated memory is still 296.7MB. Free memory was 253.7MB in the beginning and 219.6MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-19 14:04:24,553 INFO L158 Benchmark]: RCFGBuilder took 992.12ms. Allocated memory is still 296.7MB. Free memory was 219.6MB in the beginning and 223.7MB in the end (delta: -4.0MB). Peak memory consumption was 75.2MB. Max. memory is 8.0GB. [2023-12-19 14:04:24,553 INFO L158 Benchmark]: TraceAbstraction took 868966.55ms. Allocated memory was 296.7MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 223.1MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 793.2MB. Max. memory is 8.0GB. [2023-12-19 14:04:24,554 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 154.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 450.70ms. Allocated memory is still 296.7MB. Free memory was 241.7MB in the beginning and 205.5MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 133.68ms. Allocated memory is still 296.7MB. Free memory was 205.5MB in the beginning and 253.7MB in the end (delta: -48.2MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 137.60ms. Allocated memory is still 296.7MB. Free memory was 253.7MB in the beginning and 219.6MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * RCFGBuilder took 992.12ms. Allocated memory is still 296.7MB. Free memory was 219.6MB in the beginning and 223.7MB in the end (delta: -4.0MB). Peak memory consumption was 75.2MB. Max. memory is 8.0GB. * TraceAbstraction took 868966.55ms. Allocated memory was 296.7MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 223.1MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 793.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 461 with TraceHistMax 65,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 252 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.9s, OverallIterations: 27, TraceHistogramMax: 65, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34430 SdHoareTripleChecker+Valid, 11.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34151 mSDsluCounter, 41285 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29394 mSDsCounter, 4218 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11469 IncrementalHoareTripleChecker+Invalid, 15687 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4218 mSolverCounterUnsat, 11891 mSDtfsCounter, 11469 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15970 GetRequests, 15669 SyntacticMatches, 3 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54301occurred in iteration=26, InterpolantAutomatonStates: 278, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 93197 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 39.8s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 12291 NumberOfCodeBlocks, 12291 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 15454 ConstructedInterpolants, 0 QuantifiedInterpolants, 45683 SizeOfPredicates, 82 NumberOfNonLiveVariables, 30171 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 34 InterpolantComputations, 17 PerfectInterpolantSequences, 279790/282880 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown