/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-14.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:16:45,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:16:45,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:16:45,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:16:45,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:16:45,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:16:45,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:16:45,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:16:45,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:16:45,620 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:16:45,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:16:45,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:16:45,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:16:45,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:16:45,622 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:16:45,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:16:45,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:16:45,623 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:16:45,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:16:45,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:16:45,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:16:45,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:16:45,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:16:45,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:16:45,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:16:45,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:16:45,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:16:45,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:16:45,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:16:45,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:16:45,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:16:45,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:16:45,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:16:45,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:16:45,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:16:45,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:16:45,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:16:45,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:16:45,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:16:45,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:16:45,629 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:16:45,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:16:45,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:16:45,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:16:45,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:16:45,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:16:45,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:16:45,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:16:45,872 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:16:45,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-14.i [2023-12-15 21:16:46,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:16:47,208 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:16:47,208 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-14.i [2023-12-15 21:16:47,220 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da616d0c4/2f535ce191b341b1a0d67adb1eff8677/FLAG4b7122485 [2023-12-15 21:16:47,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da616d0c4/2f535ce191b341b1a0d67adb1eff8677 [2023-12-15 21:16:47,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:16:47,231 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:16:47,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:16:47,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:16:47,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:16:47,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:47,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf1721f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47, skipping insertion in model container [2023-12-15 21:16:47,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:47,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:16:47,413 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-14.i[916,929] [2023-12-15 21:16:47,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:16:47,604 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:16:47,613 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-14.i[916,929] [2023-12-15 21:16:47,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:16:47,845 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:16:47,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47 WrapperNode [2023-12-15 21:16:47,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:16:47,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:16:47,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:16:47,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:16:47,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:47,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:47,949 INFO L138 Inliner]: procedures = 26, calls = 97, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 889 [2023-12-15 21:16:47,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:16:47,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:16:47,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:16:47,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:16:47,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:47,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:47,982 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,026 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]. [2023-12-15 21:16:48,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:16:48,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:16:48,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:16:48,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:16:48,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (1/1) ... [2023-12-15 21:16:48,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:16:48,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:48,122 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) [2023-12-15 21:16:48,131 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 [2023-12-15 21:16:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:16:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:16:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:16:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:16:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:16:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:16:48,277 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:16:48,280 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:16:49,202 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:16:49,258 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:16:49,258 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:16:49,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:16:49 BoogieIcfgContainer [2023-12-15 21:16:49,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:16:49,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:16:49,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:16:49,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:16:49,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:16:47" (1/3) ... [2023-12-15 21:16:49,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d8c0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:16:49, skipping insertion in model container [2023-12-15 21:16:49,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:47" (2/3) ... [2023-12-15 21:16:49,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d8c0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:16:49, skipping insertion in model container [2023-12-15 21:16:49,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:16:49" (3/3) ... [2023-12-15 21:16:49,265 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-14.i [2023-12-15 21:16:49,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:16:49,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:16:49,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:16:49,331 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;@596c449d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:16:49,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:16:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 249 states have (on average 1.5783132530120483) internal successors, (393), 250 states have internal predecessors, (393), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:16:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-15 21:16:49,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:49,369 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:49,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:49,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1130727856, now seen corresponding path program 1 times [2023-12-15 21:16:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:49,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539460838] [2023-12-15 21:16:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:49,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539460838] [2023-12-15 21:16:49,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:16:49,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232093014] [2023-12-15 21:16:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:49,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:49,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:49,765 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) [2023-12-15 21:16:49,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:16:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:50,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:16:50,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2023-12-15 21:16:50,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:50,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232093014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:50,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:50,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:16:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157097854] [2023-12-15 21:16:50,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:50,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:16:50,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:50,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:16:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:16:50,332 INFO L87 Difference]: Start difference. First operand has 336 states, 249 states have (on average 1.5783132530120483) internal successors, (393), 250 states have internal predecessors, (393), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) [2023-12-15 21:16:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:50,411 INFO L93 Difference]: Finished difference Result 669 states and 1204 transitions. [2023-12-15 21:16:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:16:50,413 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) Word has length 570 [2023-12-15 21:16:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:50,424 INFO L225 Difference]: With dead ends: 669 [2023-12-15 21:16:50,425 INFO L226 Difference]: Without dead ends: 334 [2023-12-15 21:16:50,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:16:50,434 INFO L413 NwaCegarLoop]: 553 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, 553 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 [2023-12-15 21:16:50,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:16:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-15 21:16:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2023-12-15 21:16:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 248 states have (on average 1.564516129032258) internal successors, (388), 248 states have internal predecessors, (388), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:16:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 556 transitions. [2023-12-15 21:16:50,498 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 556 transitions. Word has length 570 [2023-12-15 21:16:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:50,499 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 556 transitions. [2023-12-15 21:16:50,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) [2023-12-15 21:16:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 556 transitions. [2023-12-15 21:16:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-15 21:16:50,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:50,507 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:50,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:16:50,714 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 [2023-12-15 21:16:50,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:50,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1851379796, now seen corresponding path program 1 times [2023-12-15 21:16:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286820257] [2023-12-15 21:16:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:50,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:50,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:50,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176564942] [2023-12-15 21:16:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:50,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:50,847 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) [2023-12-15 21:16:50,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:16:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:51,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:16:51,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:16:51,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:51,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286820257] [2023-12-15 21:16:51,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176564942] [2023-12-15 21:16:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176564942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:51,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:51,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:16:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040734977] [2023-12-15 21:16:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:51,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:16:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:16:51,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:16:51,852 INFO L87 Difference]: Start difference. First operand 334 states and 556 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:52,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:52,344 INFO L93 Difference]: Finished difference Result 1986 states and 3316 transitions. [2023-12-15 21:16:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:16:52,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 570 [2023-12-15 21:16:52,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:52,352 INFO L225 Difference]: With dead ends: 1986 [2023-12-15 21:16:52,352 INFO L226 Difference]: Without dead ends: 1653 [2023-12-15 21:16:52,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:16:52,354 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1727 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:52,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 4560 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:16:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2023-12-15 21:16:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1327. [2023-12-15 21:16:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 986 states have (on average 1.5598377281947262) internal successors, (1538), 986 states have internal predecessors, (1538), 336 states have call successors, (336), 4 states have call predecessors, (336), 4 states have return successors, (336), 336 states have call predecessors, (336), 336 states have call successors, (336) [2023-12-15 21:16:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 2210 transitions. [2023-12-15 21:16:52,511 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 2210 transitions. Word has length 570 [2023-12-15 21:16:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:52,516 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 2210 transitions. [2023-12-15 21:16:52,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 2210 transitions. [2023-12-15 21:16:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-15 21:16:52,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:52,524 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:52,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:52,731 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 [2023-12-15 21:16:52,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:52,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1412546602, now seen corresponding path program 1 times [2023-12-15 21:16:52,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467243236] [2023-12-15 21:16:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:52,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:52,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872053572] [2023-12-15 21:16:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:52,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:52,833 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) [2023-12-15 21:16:52,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:16:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:53,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:53,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:16:53,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:53,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467243236] [2023-12-15 21:16:53,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:53,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872053572] [2023-12-15 21:16:53,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872053572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:53,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:53,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:16:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958012855] [2023-12-15 21:16:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:53,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:53,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:53,629 INFO L87 Difference]: Start difference. First operand 1327 states and 2210 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:53,730 INFO L93 Difference]: Finished difference Result 2986 states and 4974 transitions. [2023-12-15 21:16:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:53,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 570 [2023-12-15 21:16:53,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:53,739 INFO L225 Difference]: With dead ends: 2986 [2023-12-15 21:16:53,739 INFO L226 Difference]: Without dead ends: 1660 [2023-12-15 21:16:53,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:53,744 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 288 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:53,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1391 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:16:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-12-15 21:16:53,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 996. [2023-12-15 21:16:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 740 states have (on average 1.5567567567567568) internal successors, (1152), 740 states have internal predecessors, (1152), 252 states have call successors, (252), 3 states have call predecessors, (252), 3 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2023-12-15 21:16:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1656 transitions. [2023-12-15 21:16:53,841 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1656 transitions. Word has length 570 [2023-12-15 21:16:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:53,843 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1656 transitions. [2023-12-15 21:16:53,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1656 transitions. [2023-12-15 21:16:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-12-15 21:16:53,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:53,850 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:53,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:54,058 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 [2023-12-15 21:16:54,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -771190990, now seen corresponding path program 1 times [2023-12-15 21:16:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:54,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964137049] [2023-12-15 21:16:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:54,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836241441] [2023-12-15 21:16:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:54,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:54,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:54,108 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) [2023-12-15 21:16:54,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:16:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:54,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:54,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:16:54,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:54,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964137049] [2023-12-15 21:16:54,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:54,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836241441] [2023-12-15 21:16:54,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836241441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:54,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:16:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111063095] [2023-12-15 21:16:54,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:54,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:54,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:54,474 INFO L87 Difference]: Start difference. First operand 996 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:54,714 INFO L93 Difference]: Finished difference Result 2707 states and 4498 transitions. [2023-12-15 21:16:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:54,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 571 [2023-12-15 21:16:54,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:54,721 INFO L225 Difference]: With dead ends: 2707 [2023-12-15 21:16:54,721 INFO L226 Difference]: Without dead ends: 1712 [2023-12-15 21:16:54,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:54,724 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 396 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:54,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1085 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:16:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2023-12-15 21:16:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1707. [2023-12-15 21:16:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1343 states have (on average 1.5778108711839165) internal successors, (2119), 1346 states have internal predecessors, (2119), 357 states have call successors, (357), 6 states have call predecessors, (357), 6 states have return successors, (357), 354 states have call predecessors, (357), 357 states have call successors, (357) [2023-12-15 21:16:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2833 transitions. [2023-12-15 21:16:54,802 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2833 transitions. Word has length 571 [2023-12-15 21:16:54,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:54,803 INFO L495 AbstractCegarLoop]: Abstraction has 1707 states and 2833 transitions. [2023-12-15 21:16:54,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2833 transitions. [2023-12-15 21:16:54,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-12-15 21:16:54,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:54,808 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:54,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:55,032 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 [2023-12-15 21:16:55,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:55,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -457424, now seen corresponding path program 1 times [2023-12-15 21:16:55,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:55,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548647235] [2023-12-15 21:16:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:55,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:55,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:55,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291497671] [2023-12-15 21:16:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:55,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:55,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:55,086 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) [2023-12-15 21:16:55,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:16:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:55,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:55,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:16:55,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548647235] [2023-12-15 21:16:55,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:55,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291497671] [2023-12-15 21:16:55,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291497671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:55,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:55,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:16:55,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713960123] [2023-12-15 21:16:55,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:55,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:55,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:55,443 INFO L87 Difference]: Start difference. First operand 1707 states and 2833 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:55,602 INFO L93 Difference]: Finished difference Result 4924 states and 8157 transitions. [2023-12-15 21:16:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 571 [2023-12-15 21:16:55,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:55,615 INFO L225 Difference]: With dead ends: 4924 [2023-12-15 21:16:55,615 INFO L226 Difference]: Without dead ends: 3218 [2023-12-15 21:16:55,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:55,620 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 464 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:55,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1425 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:16:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2023-12-15 21:16:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2319. [2023-12-15 21:16:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 1955 states have (on average 1.6168797953964194) internal successors, (3161), 1958 states have internal predecessors, (3161), 357 states have call successors, (357), 6 states have call predecessors, (357), 6 states have return successors, (357), 354 states have call predecessors, (357), 357 states have call successors, (357) [2023-12-15 21:16:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3875 transitions. [2023-12-15 21:16:55,738 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3875 transitions. Word has length 571 [2023-12-15 21:16:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:55,739 INFO L495 AbstractCegarLoop]: Abstraction has 2319 states and 3875 transitions. [2023-12-15 21:16:55,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3875 transitions. [2023-12-15 21:16:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-12-15 21:16:55,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:55,744 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:55,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:55,951 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 [2023-12-15 21:16:55,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:55,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:55,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1058295502, now seen corresponding path program 1 times [2023-12-15 21:16:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:55,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400682852] [2023-12-15 21:16:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:55,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:55,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:55,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13563110] [2023-12-15 21:16:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:55,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:55,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:56,001 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) [2023-12-15 21:16:56,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:16:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:56,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:16:56,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:16:56,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:56,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400682852] [2023-12-15 21:16:56,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13563110] [2023-12-15 21:16:56,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13563110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:56,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:56,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:16:56,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893423660] [2023-12-15 21:16:56,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:56,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:16:56,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:56,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:16:56,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:56,370 INFO L87 Difference]: Start difference. First operand 2319 states and 3875 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:56,497 INFO L93 Difference]: Finished difference Result 6697 states and 11188 transitions. [2023-12-15 21:16:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:16:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 571 [2023-12-15 21:16:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:56,512 INFO L225 Difference]: With dead ends: 6697 [2023-12-15 21:16:56,512 INFO L226 Difference]: Without dead ends: 4379 [2023-12-15 21:16:56,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:16:56,518 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 403 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:56,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1388 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:16:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2023-12-15 21:16:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 4374. [2023-12-15 21:16:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 3716 states have (on average 1.6151776103336921) internal successors, (6002), 3725 states have internal predecessors, (6002), 645 states have call successors, (645), 12 states have call predecessors, (645), 12 states have return successors, (645), 636 states have call predecessors, (645), 645 states have call successors, (645) [2023-12-15 21:16:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 7292 transitions. [2023-12-15 21:16:56,678 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 7292 transitions. Word has length 571 [2023-12-15 21:16:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:56,678 INFO L495 AbstractCegarLoop]: Abstraction has 4374 states and 7292 transitions. [2023-12-15 21:16:56,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:16:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 7292 transitions. [2023-12-15 21:16:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-12-15 21:16:56,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:56,685 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:56,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:56,892 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 [2023-12-15 21:16:56,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:56,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash 266560692, now seen corresponding path program 1 times [2023-12-15 21:16:56,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:56,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146136117] [2023-12-15 21:16:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:56,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:56,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:56,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678836954] [2023-12-15 21:16:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:56,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:56,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:56,934 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) [2023-12-15 21:16:56,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:16:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:57,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:16:57,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6965 proven. 138 refuted. 0 times theorem prover too weak. 6841 trivial. 0 not checked. [2023-12-15 21:16:57,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:16:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 111 proven. 138 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 21:16:57,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:57,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146136117] [2023-12-15 21:16:57,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:57,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678836954] [2023-12-15 21:16:57,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678836954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:16:57,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:16:57,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:16:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979397836] [2023-12-15 21:16:57,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:16:57,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:16:57,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:16:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:16:57,984 INFO L87 Difference]: Start difference. First operand 4374 states and 7292 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-15 21:16:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:58,455 INFO L93 Difference]: Finished difference Result 8795 states and 14625 transitions. [2023-12-15 21:16:58,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:16:58,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 571 [2023-12-15 21:16:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:58,474 INFO L225 Difference]: With dead ends: 8795 [2023-12-15 21:16:58,478 INFO L226 Difference]: Without dead ends: 4422 [2023-12-15 21:16:58,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 1134 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:16:58,488 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 378 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:58,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1209 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:16:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-12-15 21:16:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4398. [2023-12-15 21:16:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 3734 states have (on average 1.6025709694697376) internal successors, (5984), 3743 states have internal predecessors, (5984), 645 states have call successors, (645), 18 states have call predecessors, (645), 18 states have return successors, (645), 636 states have call predecessors, (645), 645 states have call successors, (645) [2023-12-15 21:16:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 7274 transitions. [2023-12-15 21:16:58,722 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 7274 transitions. Word has length 571 [2023-12-15 21:16:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:58,723 INFO L495 AbstractCegarLoop]: Abstraction has 4398 states and 7274 transitions. [2023-12-15 21:16:58,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-15 21:16:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 7274 transitions. [2023-12-15 21:16:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-12-15 21:16:58,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:58,730 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:58,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:58,938 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 [2023-12-15 21:16:58,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:58,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash 535946731, now seen corresponding path program 1 times [2023-12-15 21:16:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:58,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116890660] [2023-12-15 21:16:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:58,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:58,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42715624] [2023-12-15 21:16:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:58,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:58,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:59,004 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) [2023-12-15 21:16:59,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:16:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:59,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:16:59,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:16:59,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:59,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116890660] [2023-12-15 21:16:59,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:16:59,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42715624] [2023-12-15 21:16:59,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42715624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:59,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:59,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:16:59,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861144108] [2023-12-15 21:16:59,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:59,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:16:59,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:16:59,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:16:59,675 INFO L87 Difference]: Start difference. First operand 4398 states and 7274 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:17:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:01,395 INFO L93 Difference]: Finished difference Result 17661 states and 29111 transitions. [2023-12-15 21:17:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:17:01,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 572 [2023-12-15 21:17:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:01,443 INFO L225 Difference]: With dead ends: 17661 [2023-12-15 21:17:01,443 INFO L226 Difference]: Without dead ends: 13264 [2023-12-15 21:17:01,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:17:01,451 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 2792 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:01,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2792 Valid, 3197 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 21:17:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13264 states. [2023-12-15 21:17:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13264 to 10878. [2023-12-15 21:17:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 9257 states have (on average 1.5804256238522199) internal successors, (14630), 9281 states have internal predecessors, (14630), 1548 states have call successors, (1548), 72 states have call predecessors, (1548), 72 states have return successors, (1548), 1524 states have call predecessors, (1548), 1548 states have call successors, (1548) [2023-12-15 21:17:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 17726 transitions. [2023-12-15 21:17:02,014 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 17726 transitions. Word has length 572 [2023-12-15 21:17:02,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:02,015 INFO L495 AbstractCegarLoop]: Abstraction has 10878 states and 17726 transitions. [2023-12-15 21:17:02,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:17:02,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 17726 transitions. [2023-12-15 21:17:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-12-15 21:17:02,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:02,028 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:02,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:17:02,235 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 [2023-12-15 21:17:02,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:02,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2036161653, now seen corresponding path program 1 times [2023-12-15 21:17:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:02,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363552804] [2023-12-15 21:17:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:02,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:02,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:02,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336726727] [2023-12-15 21:17:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:02,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:02,297 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) [2023-12-15 21:17:02,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:17:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:02,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:17:02,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 7043 proven. 129 refuted. 0 times theorem prover too weak. 6772 trivial. 0 not checked. [2023-12-15 21:17:02,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 120 proven. 129 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 21:17:03,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:03,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363552804] [2023-12-15 21:17:03,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:03,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336726727] [2023-12-15 21:17:03,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336726727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:03,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:03,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:17:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480780576] [2023-12-15 21:17:03,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:03,245 INFO L87 Difference]: Start difference. First operand 10878 states and 17726 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-15 21:17:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:03,851 INFO L93 Difference]: Finished difference Result 17792 states and 28986 transitions. [2023-12-15 21:17:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:03,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 572 [2023-12-15 21:17:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:03,873 INFO L225 Difference]: With dead ends: 17792 [2023-12-15 21:17:03,873 INFO L226 Difference]: Without dead ends: 6915 [2023-12-15 21:17:03,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1136 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:17:03,899 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 724 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:03,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1195 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:17:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6915 states. [2023-12-15 21:17:04,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6915 to 6843. [2023-12-15 21:17:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6843 states, 5714 states have (on average 1.571753587679384) internal successors, (8981), 5726 states have internal predecessors, (8981), 1080 states have call successors, (1080), 48 states have call predecessors, (1080), 48 states have return successors, (1080), 1068 states have call predecessors, (1080), 1080 states have call successors, (1080) [2023-12-15 21:17:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6843 states to 6843 states and 11141 transitions. [2023-12-15 21:17:04,259 INFO L78 Accepts]: Start accepts. Automaton has 6843 states and 11141 transitions. Word has length 572 [2023-12-15 21:17:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:04,260 INFO L495 AbstractCegarLoop]: Abstraction has 6843 states and 11141 transitions. [2023-12-15 21:17:04,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-15 21:17:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6843 states and 11141 transitions. [2023-12-15 21:17:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-12-15 21:17:04,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:04,267 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:04,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 21:17:04,475 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 [2023-12-15 21:17:04,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:04,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1192831957, now seen corresponding path program 1 times [2023-12-15 21:17:04,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:04,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776893854] [2023-12-15 21:17:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:04,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:04,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448382033] [2023-12-15 21:17:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:04,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:04,542 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) [2023-12-15 21:17:04,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:17:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:04,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:17:04,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:17:05,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776893854] [2023-12-15 21:17:05,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:05,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448382033] [2023-12-15 21:17:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448382033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:05,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:05,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:17:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900400785] [2023-12-15 21:17:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:05,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:05,517 INFO L87 Difference]: Start difference. First operand 6843 states and 11141 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:17:07,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:07,075 INFO L93 Difference]: Finished difference Result 21315 states and 34860 transitions. [2023-12-15 21:17:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:17:07,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 572 [2023-12-15 21:17:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:07,175 INFO L225 Difference]: With dead ends: 21315 [2023-12-15 21:17:07,176 INFO L226 Difference]: Without dead ends: 16894 [2023-12-15 21:17:07,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:17:07,184 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 4712 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4712 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:07,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4712 Valid, 3136 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 21:17:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16894 states. [2023-12-15 21:17:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16894 to 8850. [2023-12-15 21:17:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8850 states, 7262 states have (on average 1.5597631506472047) internal successors, (11327), 7280 states have internal predecessors, (11327), 1515 states have call successors, (1515), 72 states have call predecessors, (1515), 72 states have return successors, (1515), 1497 states have call predecessors, (1515), 1515 states have call successors, (1515) [2023-12-15 21:17:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8850 states to 8850 states and 14357 transitions. [2023-12-15 21:17:07,868 INFO L78 Accepts]: Start accepts. Automaton has 8850 states and 14357 transitions. Word has length 572 [2023-12-15 21:17:07,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:07,869 INFO L495 AbstractCegarLoop]: Abstraction has 8850 states and 14357 transitions. [2023-12-15 21:17:07,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:17:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 8850 states and 14357 transitions. [2023-12-15 21:17:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-12-15 21:17:07,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:07,877 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:07,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:08,085 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 [2023-12-15 21:17:08,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:08,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:08,086 INFO L85 PathProgramCache]: Analyzing trace with hash 530026955, now seen corresponding path program 1 times [2023-12-15 21:17:08,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:08,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508216745] [2023-12-15 21:17:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:08,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:08,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:08,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195548512] [2023-12-15 21:17:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:08,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:08,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:08,140 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) [2023-12-15 21:17:08,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:17:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:08,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:17:08,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6125 proven. 78 refuted. 0 times theorem prover too weak. 7741 trivial. 0 not checked. [2023-12-15 21:17:09,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 171 proven. 78 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 21:17:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508216745] [2023-12-15 21:17:09,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195548512] [2023-12-15 21:17:09,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195548512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:09,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-12-15 21:17:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767927912] [2023-12-15 21:17:09,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:09,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:17:09,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:17:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:17:09,588 INFO L87 Difference]: Start difference. First operand 8850 states and 14357 transitions. Second operand has 12 states, 12 states have (on average 21.833333333333332) internal successors, (262), 12 states have internal predecessors, (262), 4 states have call successors, (168), 3 states have call predecessors, (168), 5 states have return successors, (168), 4 states have call predecessors, (168), 4 states have call successors, (168) [2023-12-15 21:17:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:14,683 INFO L93 Difference]: Finished difference Result 64108 states and 102185 transitions. [2023-12-15 21:17:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-15 21:17:14,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.833333333333332) internal successors, (262), 12 states have internal predecessors, (262), 4 states have call successors, (168), 3 states have call predecessors, (168), 5 states have return successors, (168), 4 states have call predecessors, (168), 4 states have call successors, (168) Word has length 572 [2023-12-15 21:17:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:14,826 INFO L225 Difference]: With dead ends: 64108 [2023-12-15 21:17:14,826 INFO L226 Difference]: Without dead ends: 55259 [2023-12-15 21:17:14,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=510, Invalid=1382, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 21:17:14,852 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 4698 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 1512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 4109 SdHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1512 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:14,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4757 Valid, 4109 Invalid, 3905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1512 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 21:17:14,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55259 states. [2023-12-15 21:17:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55259 to 53799. [2023-12-15 21:17:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53799 states, 41774 states have (on average 1.5019390051228036) internal successors, (62742), 41954 states have internal predecessors, (62742), 11388 states have call successors, (11388), 636 states have call predecessors, (11388), 636 states have return successors, (11388), 11208 states have call predecessors, (11388), 11388 states have call successors, (11388) [2023-12-15 21:17:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53799 states to 53799 states and 85518 transitions. [2023-12-15 21:17:18,419 INFO L78 Accepts]: Start accepts. Automaton has 53799 states and 85518 transitions. Word has length 572 [2023-12-15 21:17:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:18,419 INFO L495 AbstractCegarLoop]: Abstraction has 53799 states and 85518 transitions. [2023-12-15 21:17:18,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.833333333333332) internal successors, (262), 12 states have internal predecessors, (262), 4 states have call successors, (168), 3 states have call predecessors, (168), 5 states have return successors, (168), 4 states have call predecessors, (168), 4 states have call successors, (168) [2023-12-15 21:17:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 53799 states and 85518 transitions. [2023-12-15 21:17:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-12-15 21:17:18,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:18,436 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:18,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 21:17:18,643 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 [2023-12-15 21:17:18,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:18,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:18,644 INFO L85 PathProgramCache]: Analyzing trace with hash 7223158, now seen corresponding path program 1 times [2023-12-15 21:17:18,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:18,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10127332] [2023-12-15 21:17:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:18,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:18,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:18,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960272862] [2023-12-15 21:17:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:18,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:18,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:18,688 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) [2023-12-15 21:17:18,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:17:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:19,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:17:19,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 21:17:20,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:20,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:20,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10127332] [2023-12-15 21:17:20,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:20,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960272862] [2023-12-15 21:17:20,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960272862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:20,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:17:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132693491] [2023-12-15 21:17:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:20,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:17:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:17:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:17:20,460 INFO L87 Difference]: Start difference. First operand 53799 states and 85518 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:17:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:24,692 INFO L93 Difference]: Finished difference Result 139948 states and 222698 transitions. [2023-12-15 21:17:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 573 [2023-12-15 21:17:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:24,937 INFO L225 Difference]: With dead ends: 139948 [2023-12-15 21:17:24,938 INFO L226 Difference]: Without dead ends: 86150 [2023-12-15 21:17:25,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:17:25,034 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1901 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:25,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 3061 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:17:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86150 states. [2023-12-15 21:17:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86150 to 63675. [2023-12-15 21:17:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63675 states, 51561 states have (on average 1.535191326777991) internal successors, (79156), 51741 states have internal predecessors, (79156), 11472 states have call successors, (11472), 641 states have call predecessors, (11472), 641 states have return successors, (11472), 11292 states have call predecessors, (11472), 11472 states have call successors, (11472) [2023-12-15 21:17:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63675 states to 63675 states and 102100 transitions. [2023-12-15 21:17:28,933 INFO L78 Accepts]: Start accepts. Automaton has 63675 states and 102100 transitions. Word has length 573 [2023-12-15 21:17:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:28,934 INFO L495 AbstractCegarLoop]: Abstraction has 63675 states and 102100 transitions. [2023-12-15 21:17:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 21:17:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 63675 states and 102100 transitions. [2023-12-15 21:17:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-12-15 21:17:28,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:28,964 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:28,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:29,171 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 [2023-12-15 21:17:29,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:29,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash 440952244, now seen corresponding path program 1 times [2023-12-15 21:17:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783351756] [2023-12-15 21:17:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:29,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:29,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515737024] [2023-12-15 21:17:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:29,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:29,215 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) [2023-12-15 21:17:29,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:17:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:29,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:17:29,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6749 proven. 150 refuted. 0 times theorem prover too weak. 7045 trivial. 0 not checked. [2023-12-15 21:17:29,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 99 proven. 150 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 21:17:30,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:30,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783351756] [2023-12-15 21:17:30,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:30,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515737024] [2023-12-15 21:17:30,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515737024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:30,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:30,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 21:17:30,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074279992] [2023-12-15 21:17:30,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:30,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:17:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:17:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:17:30,235 INFO L87 Difference]: Start difference. First operand 63675 states and 102100 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-15 21:17:36,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:36,667 INFO L93 Difference]: Finished difference Result 160875 states and 252795 transitions. [2023-12-15 21:17:36,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:17:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Word has length 573 [2023-12-15 21:17:36,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:36,923 INFO L225 Difference]: With dead ends: 160875 [2023-12-15 21:17:36,924 INFO L226 Difference]: Without dead ends: 97457 [2023-12-15 21:17:37,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 1137 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:17:37,008 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1332 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:37,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 2411 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 21:17:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97457 states. [2023-12-15 21:17:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97457 to 65193. [2023-12-15 21:17:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65193 states, 52886 states have (on average 1.5191733161895398) internal successors, (80343), 53066 states have internal predecessors, (80343), 11472 states have call successors, (11472), 834 states have call predecessors, (11472), 834 states have return successors, (11472), 11292 states have call predecessors, (11472), 11472 states have call successors, (11472) [2023-12-15 21:17:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65193 states to 65193 states and 103287 transitions. [2023-12-15 21:17:42,277 INFO L78 Accepts]: Start accepts. Automaton has 65193 states and 103287 transitions. Word has length 573 [2023-12-15 21:17:42,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:42,278 INFO L495 AbstractCegarLoop]: Abstraction has 65193 states and 103287 transitions. [2023-12-15 21:17:42,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-15 21:17:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand 65193 states and 103287 transitions. [2023-12-15 21:17:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-12-15 21:17:42,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:42,317 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:42,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:42,524 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 [2023-12-15 21:17:42,525 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:42,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1592441802, now seen corresponding path program 1 times [2023-12-15 21:17:42,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:42,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31057604] [2023-12-15 21:17:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:42,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:42,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003816331] [2023-12-15 21:17:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:42,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:42,587 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) [2023-12-15 21:17:42,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:17:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:42,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 21:17:42,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6749 proven. 150 refuted. 0 times theorem prover too weak. 7045 trivial. 0 not checked. [2023-12-15 21:17:43,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 99 proven. 150 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 21:17:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31057604] [2023-12-15 21:17:43,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:43,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003816331] [2023-12-15 21:17:43,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003816331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:43,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:43,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2023-12-15 21:17:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110108164] [2023-12-15 21:17:43,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 21:17:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 21:17:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:17:43,982 INFO L87 Difference]: Start difference. First operand 65193 states and 103287 transitions. Second operand has 15 states, 15 states have (on average 16.4) internal successors, (246), 15 states have internal predecessors, (246), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Received shutdown request... [2023-12-15 21:17:45,667 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 [2023-12-15 21:17:45,668 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:17:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-15 21:17:45,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1136 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=418, Invalid=1142, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 21:17:45,670 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 3999 mSDsluCounter, 3922 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4001 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:45,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4001 Valid, 4708 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 21:17:45,672 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:17:45,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 21:17:45,880 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 [2023-12-15 21:17:45,881 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (65193states) and FLOYD_HOARE automaton (currently 32 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (62070 states constructed, input type IntersectNwa). [2023-12-15 21:17:45,884 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:45,886 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:17:45,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:17:45 BoogieIcfgContainer [2023-12-15 21:17:45,887 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:17:45,887 INFO L158 Benchmark]: Toolchain (without parser) took 58655.98ms. Allocated memory was 188.7MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 137.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 21:17:45,887 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:17:45,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 606.99ms. Allocated memory is still 188.7MB. Free memory was 137.1MB in the beginning and 152.9MB in the end (delta: -15.9MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. [2023-12-15 21:17:45,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.16ms. Allocated memory is still 188.7MB. Free memory was 152.9MB in the beginning and 130.4MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-15 21:17:45,888 INFO L158 Benchmark]: Boogie Preprocessor took 151.12ms. Allocated memory is still 188.7MB. Free memory was 130.4MB in the beginning and 86.9MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-12-15 21:17:45,888 INFO L158 Benchmark]: RCFGBuilder took 1156.51ms. Allocated memory was 188.7MB in the beginning and 286.3MB in the end (delta: 97.5MB). Free memory was 86.9MB in the beginning and 126.2MB in the end (delta: -39.3MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. [2023-12-15 21:17:45,888 INFO L158 Benchmark]: TraceAbstraction took 56626.40ms. Allocated memory was 286.3MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 125.7MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 21:17:45,889 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 606.99ms. Allocated memory is still 188.7MB. Free memory was 137.1MB in the beginning and 152.9MB in the end (delta: -15.9MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 104.16ms. Allocated memory is still 188.7MB. Free memory was 152.9MB in the beginning and 130.4MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 151.12ms. Allocated memory is still 188.7MB. Free memory was 130.4MB in the beginning and 86.9MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * RCFGBuilder took 1156.51ms. Allocated memory was 188.7MB in the beginning and 286.3MB in the end (delta: 97.5MB). Free memory was 86.9MB in the beginning and 126.2MB in the end (delta: -39.3MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. * TraceAbstraction took 56626.40ms. Allocated memory was 286.3MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 125.7MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (65193states) and FLOYD_HOARE automaton (currently 32 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (62070 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 336 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.6s, OverallIterations: 14, TraceHistogramMax: 84, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23985 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23814 mSDsluCounter, 33428 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22837 mSDsCounter, 3617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8205 IncrementalHoareTripleChecker+Invalid, 11822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3617 mSolverCounterUnsat, 10591 mSDtfsCounter, 8205 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10955 GetRequests, 10796 SyntacticMatches, 5 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65193occurred in iteration=13, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 68624 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 8571 NumberOfCodeBlocks, 8571 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 10843 ConstructedInterpolants, 0 QuantifiedInterpolants, 30526 SizeOfPredicates, 37 NumberOfNonLiveVariables, 19097 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 263646/264936 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