/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-95.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:23:31,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:23:31,970 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 21:23:31,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:23:31,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:23:32,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:23:32,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:23:32,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:23:32,014 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:23:32,017 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:23:32,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:23:32,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:23:32,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:23:32,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:23:32,020 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:23:32,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:23:32,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:23:32,021 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:23:32,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:23:32,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:23:32,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:23:32,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:23:32,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:23:32,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:23:32,022 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:23:32,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:23:32,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:23:32,023 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:23:32,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:23:32,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:23:32,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:23:32,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:23:32,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:23:32,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:23:32,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:23:32,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:23:32,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:23:32,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:23:32,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:23:32,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:23:32,026 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:23:32,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:23:32,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:23:32,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:23:32,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:23:32,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:23:32,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:23:32,276 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:23:32,276 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:23:32,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-95.i [2023-12-15 21:23:33,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:23:33,657 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:23:33,657 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-95.i [2023-12-15 21:23:33,680 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec31ff84/0ea624bb6f11410c9a4a8b9c9028e745/FLAGd4ec2dfc4 [2023-12-15 21:23:33,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec31ff84/0ea624bb6f11410c9a4a8b9c9028e745 [2023-12-15 21:23:33,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:23:33,701 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:23:33,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:23:33,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:23:33,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:23:33,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:23:33" (1/1) ... [2023-12-15 21:23:33,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261414db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:33, skipping insertion in model container [2023-12-15 21:23:33,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:23:33" (1/1) ... [2023-12-15 21:23:33,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:23:33,910 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-95.i[916,929] [2023-12-15 21:23:34,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:23:34,176 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:23:34,186 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-95.i[916,929] [2023-12-15 21:23:34,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:23:34,347 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:23:34,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34 WrapperNode [2023-12-15 21:23:34,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:23:34,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:23:34,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:23:34,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:23:34,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,507 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 685 [2023-12-15 21:23:34,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:23:34,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:23:34,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:23:34,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:23:34,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,586 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 21:23:34,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:23:34,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:23:34,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:23:34,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:23:34,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (1/1) ... [2023-12-15 21:23:34,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:23:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:34,711 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 21:23:34,738 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 21:23:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:23:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:23:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:23:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:23:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:23:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:23:34,906 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:23:34,908 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:23:35,812 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:23:35,868 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:23:35,868 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:23:35,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:23:35 BoogieIcfgContainer [2023-12-15 21:23:35,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:23:35,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:23:35,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:23:35,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:23:35,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:23:33" (1/3) ... [2023-12-15 21:23:35,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:23:35, skipping insertion in model container [2023-12-15 21:23:35,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:34" (2/3) ... [2023-12-15 21:23:35,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:23:35, skipping insertion in model container [2023-12-15 21:23:35,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:23:35" (3/3) ... [2023-12-15 21:23:35,878 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-95.i [2023-12-15 21:23:35,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:23:35,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:23:35,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:23:35,960 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;@1f86609c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:23:35,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:23:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 195 states have (on average 1.5794871794871794) internal successors, (308), 196 states have internal predecessors, (308), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-15 21:23:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-15 21:23:35,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:35,991 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:35,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:35,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1479619458, now seen corresponding path program 1 times [2023-12-15 21:23:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889585912] [2023-12-15 21:23:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:36,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:36,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:36,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889585912] [2023-12-15 21:23:36,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:23:36,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327659320] [2023-12-15 21:23:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:36,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:36,416 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 21:23:36,426 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 21:23:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:36,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:23:36,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2023-12-15 21:23:36,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327659320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:36,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:36,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:23:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672912144] [2023-12-15 21:23:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:36,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:23:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:23:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:23:36,929 INFO L87 Difference]: Start difference. First operand has 267 states, 195 states have (on average 1.5794871794871794) internal successors, (308), 196 states have internal predecessors, (308), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-15 21:23:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:36,999 INFO L93 Difference]: Finished difference Result 531 states and 959 transitions. [2023-12-15 21:23:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:23:37,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 473 [2023-12-15 21:23:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:37,011 INFO L225 Difference]: With dead ends: 531 [2023-12-15 21:23:37,011 INFO L226 Difference]: Without dead ends: 265 [2023-12-15 21:23:37,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 472 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 21:23:37,019 INFO L413 NwaCegarLoop]: 438 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, 438 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 21:23:37,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 438 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:23:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-15 21:23:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-15 21:23:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 194 states have (on average 1.5618556701030928) internal successors, (303), 194 states have internal predecessors, (303), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-15 21:23:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 441 transitions. [2023-12-15 21:23:37,091 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 441 transitions. Word has length 473 [2023-12-15 21:23:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:37,091 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 441 transitions. [2023-12-15 21:23:37,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-15 21:23:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 441 transitions. [2023-12-15 21:23:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-15 21:23:37,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:37,102 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:37,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:37,312 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 21:23:37,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:37,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash -222068176, now seen corresponding path program 1 times [2023-12-15 21:23:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918661722] [2023-12-15 21:23:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:37,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:37,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657984636] [2023-12-15 21:23:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:37,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:37,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:37,468 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 21:23:37,491 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 21:23:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:37,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:23:37,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-15 21:23:37,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:37,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:37,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918661722] [2023-12-15 21:23:37,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:37,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657984636] [2023-12-15 21:23:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657984636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:38,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:23:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206617044] [2023-12-15 21:23:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:38,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:23:38,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:23:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:23:38,030 INFO L87 Difference]: Start difference. First operand 265 states and 441 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:38,782 INFO L93 Difference]: Finished difference Result 1028 states and 1700 transitions. [2023-12-15 21:23:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:23:38,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 473 [2023-12-15 21:23:38,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:38,797 INFO L225 Difference]: With dead ends: 1028 [2023-12-15 21:23:38,797 INFO L226 Difference]: Without dead ends: 764 [2023-12-15 21:23:38,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:23:38,804 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 875 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:38,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 2895 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:23:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2023-12-15 21:23:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 557. [2023-12-15 21:23:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 406 states have (on average 1.5369458128078817) internal successors, (624), 408 states have internal predecessors, (624), 146 states have call successors, (146), 4 states have call predecessors, (146), 4 states have return successors, (146), 144 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-15 21:23:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 916 transitions. [2023-12-15 21:23:38,893 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 916 transitions. Word has length 473 [2023-12-15 21:23:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:38,894 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 916 transitions. [2023-12-15 21:23:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 916 transitions. [2023-12-15 21:23:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-15 21:23:38,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:38,899 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:38,910 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 21:23:39,107 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 21:23:39,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:39,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:39,109 INFO L85 PathProgramCache]: Analyzing trace with hash -721351638, now seen corresponding path program 1 times [2023-12-15 21:23:39,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:39,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146363799] [2023-12-15 21:23:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:39,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:39,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:39,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35574451] [2023-12-15 21:23:39,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:39,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:39,199 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 21:23:39,207 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 21:23:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:39,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:23:39,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-15 21:23:39,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:39,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146363799] [2023-12-15 21:23:39,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35574451] [2023-12-15 21:23:39,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35574451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:39,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:39,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:23:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414665207] [2023-12-15 21:23:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:23:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:23:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:23:39,601 INFO L87 Difference]: Start difference. First operand 557 states and 916 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:39,705 INFO L93 Difference]: Finished difference Result 1476 states and 2428 transitions. [2023-12-15 21:23:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:23:39,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 473 [2023-12-15 21:23:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:39,715 INFO L225 Difference]: With dead ends: 1476 [2023-12-15 21:23:39,715 INFO L226 Difference]: Without dead ends: 920 [2023-12-15 21:23:39,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 471 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 21:23:39,717 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 266 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:39,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 849 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:23:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2023-12-15 21:23:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2023-12-15 21:23:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 729 states have (on average 1.5761316872427984) internal successors, (1149), 734 states have internal predecessors, (1149), 178 states have call successors, (178), 8 states have call predecessors, (178), 8 states have return successors, (178), 173 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-15 21:23:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1505 transitions. [2023-12-15 21:23:39,778 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1505 transitions. Word has length 473 [2023-12-15 21:23:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:39,779 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1505 transitions. [2023-12-15 21:23:39,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1505 transitions. [2023-12-15 21:23:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-15 21:23:39,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:39,784 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:39,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 21:23:39,993 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 21:23:39,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:39,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1026774732, now seen corresponding path program 1 times [2023-12-15 21:23:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:39,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674958863] [2023-12-15 21:23:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:40,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:40,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212631614] [2023-12-15 21:23:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:40,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:40,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:40,082 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 21:23:40,085 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 21:23:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:40,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:23:40,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-15 21:23:40,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:40,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:40,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674958863] [2023-12-15 21:23:40,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212631614] [2023-12-15 21:23:40,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212631614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:40,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:40,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:23:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523019268] [2023-12-15 21:23:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:40,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:23:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:23:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:23:40,496 INFO L87 Difference]: Start difference. First operand 916 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:40,612 INFO L93 Difference]: Finished difference Result 2738 states and 4497 transitions. [2023-12-15 21:23:40,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:23:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 473 [2023-12-15 21:23:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:40,623 INFO L225 Difference]: With dead ends: 2738 [2023-12-15 21:23:40,623 INFO L226 Difference]: Without dead ends: 1823 [2023-12-15 21:23:40,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 471 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 21:23:40,628 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 402 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:40,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1201 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:23:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2023-12-15 21:23:40,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1821. [2023-12-15 21:23:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1448 states have (on average 1.5649171270718232) internal successors, (2266), 1458 states have internal predecessors, (2266), 356 states have call successors, (356), 16 states have call predecessors, (356), 16 states have return successors, (356), 346 states have call predecessors, (356), 356 states have call successors, (356) [2023-12-15 21:23:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2978 transitions. [2023-12-15 21:23:40,781 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2978 transitions. Word has length 473 [2023-12-15 21:23:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:40,782 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2978 transitions. [2023-12-15 21:23:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2978 transitions. [2023-12-15 21:23:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-15 21:23:40,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:40,789 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:40,800 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 21:23:40,997 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 21:23:40,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:40,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash -562078542, now seen corresponding path program 1 times [2023-12-15 21:23:40,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:40,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325227367] [2023-12-15 21:23:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:40,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:41,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:41,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886429179] [2023-12-15 21:23:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:41,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:41,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:41,068 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 21:23:41,080 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 21:23:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:41,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:23:41,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-15 21:23:41,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325227367] [2023-12-15 21:23:41,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886429179] [2023-12-15 21:23:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886429179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:23:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033651536] [2023-12-15 21:23:41,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:41,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:23:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:41,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:23:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:23:41,846 INFO L87 Difference]: Start difference. First operand 1821 states and 2978 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:42,125 INFO L93 Difference]: Finished difference Result 4946 states and 8125 transitions. [2023-12-15 21:23:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:23:42,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 473 [2023-12-15 21:23:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:42,140 INFO L225 Difference]: With dead ends: 4946 [2023-12-15 21:23:42,140 INFO L226 Difference]: Without dead ends: 3126 [2023-12-15 21:23:42,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:42,146 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 334 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:42,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1304 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:23:42,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2023-12-15 21:23:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1945. [2023-12-15 21:23:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1500 states have (on average 1.546) internal successors, (2319), 1510 states have internal predecessors, (2319), 425 states have call successors, (425), 19 states have call predecessors, (425), 19 states have return successors, (425), 415 states have call predecessors, (425), 425 states have call successors, (425) [2023-12-15 21:23:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3169 transitions. [2023-12-15 21:23:42,311 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3169 transitions. Word has length 473 [2023-12-15 21:23:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:42,312 INFO L495 AbstractCegarLoop]: Abstraction has 1945 states and 3169 transitions. [2023-12-15 21:23:42,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3169 transitions. [2023-12-15 21:23:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-15 21:23:42,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:42,318 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:42,328 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 21:23:42,526 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 21:23:42,527 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:42,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1979111441, now seen corresponding path program 1 times [2023-12-15 21:23:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:42,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951929394] [2023-12-15 21:23:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:42,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:42,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:42,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094378921] [2023-12-15 21:23:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:42,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:42,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:42,588 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 21:23:42,613 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 21:23:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:42,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:23:42,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-15 21:23:42,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:42,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951929394] [2023-12-15 21:23:42,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094378921] [2023-12-15 21:23:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094378921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:42,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:42,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:23:42,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23182719] [2023-12-15 21:23:42,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:23:42,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:23:42,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:23:42,992 INFO L87 Difference]: Start difference. First operand 1945 states and 3169 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:43,710 INFO L93 Difference]: Finished difference Result 5489 states and 8952 transitions. [2023-12-15 21:23:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:23:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 474 [2023-12-15 21:23:43,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:43,729 INFO L225 Difference]: With dead ends: 5489 [2023-12-15 21:23:43,730 INFO L226 Difference]: Without dead ends: 3669 [2023-12-15 21:23:43,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:43,737 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1149 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:43,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 1697 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:23:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2023-12-15 21:23:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3659. [2023-12-15 21:23:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2897 states have (on average 1.5588539868829825) internal successors, (4516), 2919 states have internal predecessors, (4516), 725 states have call successors, (725), 36 states have call predecessors, (725), 36 states have return successors, (725), 703 states have call predecessors, (725), 725 states have call successors, (725) [2023-12-15 21:23:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5966 transitions. [2023-12-15 21:23:43,972 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5966 transitions. Word has length 474 [2023-12-15 21:23:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:43,973 INFO L495 AbstractCegarLoop]: Abstraction has 3659 states and 5966 transitions. [2023-12-15 21:23:43,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5966 transitions. [2023-12-15 21:23:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-15 21:23:43,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:43,980 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:43,991 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 21:23:44,189 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 21:23:44,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:44,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:44,190 INFO L85 PathProgramCache]: Analyzing trace with hash -98225457, now seen corresponding path program 1 times [2023-12-15 21:23:44,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:44,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237846961] [2023-12-15 21:23:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:44,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:44,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:44,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425413928] [2023-12-15 21:23:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:44,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:44,251 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 21:23:44,260 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 21:23:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:44,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:23:44,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 5072 proven. 126 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2023-12-15 21:23:45,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 78 proven. 126 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-15 21:23:46,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237846961] [2023-12-15 21:23:46,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425413928] [2023-12-15 21:23:46,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425413928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:46,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:46,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 21:23:46,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044355575] [2023-12-15 21:23:46,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:46,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:23:46,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:23:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:23:46,021 INFO L87 Difference]: Start difference. First operand 3659 states and 5966 transitions. Second operand has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 5 states have call predecessors, (130), 5 states have call successors, (130) [2023-12-15 21:23:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:46,652 INFO L93 Difference]: Finished difference Result 6119 states and 10014 transitions. [2023-12-15 21:23:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:23:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 5 states have call predecessors, (130), 5 states have call successors, (130) Word has length 474 [2023-12-15 21:23:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:46,668 INFO L225 Difference]: With dead ends: 6119 [2023-12-15 21:23:46,673 INFO L226 Difference]: Without dead ends: 2589 [2023-12-15 21:23:46,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:23:46,683 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1114 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:46,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 800 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:23:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2023-12-15 21:23:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2569. [2023-12-15 21:23:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 2114 states have (on average 1.5804162724692525) internal successors, (3341), 2128 states have internal predecessors, (3341), 429 states have call successors, (429), 25 states have call predecessors, (429), 25 states have return successors, (429), 415 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-15 21:23:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 4199 transitions. [2023-12-15 21:23:46,896 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 4199 transitions. Word has length 474 [2023-12-15 21:23:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:46,897 INFO L495 AbstractCegarLoop]: Abstraction has 2569 states and 4199 transitions. [2023-12-15 21:23:46,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 5 states have call predecessors, (130), 5 states have call successors, (130) [2023-12-15 21:23:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 4199 transitions. [2023-12-15 21:23:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-15 21:23:46,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:46,905 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:46,919 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 21:23:47,114 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 21:23:47,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1908593085, now seen corresponding path program 1 times [2023-12-15 21:23:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852105675] [2023-12-15 21:23:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:47,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:47,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183666607] [2023-12-15 21:23:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:47,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:47,181 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 21:23:47,189 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 21:23:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:47,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:23:47,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 2504 proven. 30 refuted. 0 times theorem prover too weak. 6850 trivial. 0 not checked. [2023-12-15 21:23:47,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 174 proven. 30 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-15 21:23:47,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852105675] [2023-12-15 21:23:47,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183666607] [2023-12-15 21:23:47,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183666607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:47,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:47,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:23:47,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975151722] [2023-12-15 21:23:47,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:47,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:23:47,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:47,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:23:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:23:47,896 INFO L87 Difference]: Start difference. First operand 2569 states and 4199 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-15 21:23:48,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:48,327 INFO L93 Difference]: Finished difference Result 5035 states and 8227 transitions. [2023-12-15 21:23:48,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:23:48,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 475 [2023-12-15 21:23:48,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:48,339 INFO L225 Difference]: With dead ends: 5035 [2023-12-15 21:23:48,339 INFO L226 Difference]: Without dead ends: 2599 [2023-12-15 21:23:48,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 942 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 21:23:48,346 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 341 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:48,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 940 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:23:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2023-12-15 21:23:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2581. [2023-12-15 21:23:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2581 states, 2123 states have (on average 1.570419218087612) internal successors, (3334), 2137 states have internal predecessors, (3334), 429 states have call successors, (429), 28 states have call predecessors, (429), 28 states have return successors, (429), 415 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-15 21:23:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 4192 transitions. [2023-12-15 21:23:48,531 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 4192 transitions. Word has length 475 [2023-12-15 21:23:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:48,531 INFO L495 AbstractCegarLoop]: Abstraction has 2581 states and 4192 transitions. [2023-12-15 21:23:48,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-15 21:23:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 4192 transitions. [2023-12-15 21:23:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-15 21:23:48,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:48,539 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:48,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:48,748 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 21:23:48,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:48,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash 385938111, now seen corresponding path program 1 times [2023-12-15 21:23:48,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:48,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538546449] [2023-12-15 21:23:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:48,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:48,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487776463] [2023-12-15 21:23:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:48,809 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 21:23:48,833 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 21:23:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:49,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:23:49,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-15 21:23:49,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:49,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:49,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538546449] [2023-12-15 21:23:49,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:49,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487776463] [2023-12-15 21:23:49,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487776463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:49,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:49,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:23:49,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122322773] [2023-12-15 21:23:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:49,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:23:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:23:49,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:23:49,300 INFO L87 Difference]: Start difference. First operand 2581 states and 4192 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:49,569 INFO L93 Difference]: Finished difference Result 5110 states and 8297 transitions. [2023-12-15 21:23:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:23:49,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 475 [2023-12-15 21:23:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:49,585 INFO L225 Difference]: With dead ends: 5110 [2023-12-15 21:23:49,585 INFO L226 Difference]: Without dead ends: 2666 [2023-12-15 21:23:49,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:49,597 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 650 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:49,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 967 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:23:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2023-12-15 21:23:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2593. [2023-12-15 21:23:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2132 states have (on average 1.5605065666041276) internal successors, (3327), 2146 states have internal predecessors, (3327), 429 states have call successors, (429), 31 states have call predecessors, (429), 31 states have return successors, (429), 415 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-15 21:23:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 4185 transitions. [2023-12-15 21:23:49,776 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 4185 transitions. Word has length 475 [2023-12-15 21:23:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:49,776 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 4185 transitions. [2023-12-15 21:23:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 4185 transitions. [2023-12-15 21:23:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-12-15 21:23:49,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:49,784 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:49,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:49,992 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 21:23:49,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:49,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2066295526, now seen corresponding path program 1 times [2023-12-15 21:23:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026761554] [2023-12-15 21:23:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:50,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:50,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367450348] [2023-12-15 21:23:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:50,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:50,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:50,045 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 21:23:50,071 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 21:23:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:50,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:23:50,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4604 proven. 120 refuted. 0 times theorem prover too weak. 4660 trivial. 0 not checked. [2023-12-15 21:23:50,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 84 proven. 120 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-15 21:23:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026761554] [2023-12-15 21:23:51,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367450348] [2023-12-15 21:23:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367450348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:51,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:51,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-15 21:23:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000388961] [2023-12-15 21:23:51,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:51,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:23:51,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:51,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:23:51,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:23:51,039 INFO L87 Difference]: Start difference. First operand 2593 states and 4185 transitions. Second operand has 11 states, 11 states have (on average 17.90909090909091) internal successors, (197), 11 states have internal predecessors, (197), 3 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2023-12-15 21:23:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:51,610 INFO L93 Difference]: Finished difference Result 5119 states and 8230 transitions. [2023-12-15 21:23:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:23:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.90909090909091) internal successors, (197), 11 states have internal predecessors, (197), 3 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) Word has length 477 [2023-12-15 21:23:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:51,622 INFO L225 Difference]: With dead ends: 5119 [2023-12-15 21:23:51,622 INFO L226 Difference]: Without dead ends: 2667 [2023-12-15 21:23:51,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 943 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:23:51,628 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 519 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:51,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1005 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:23:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2023-12-15 21:23:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2633. [2023-12-15 21:23:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2162 states have (on average 1.5490286771507864) internal successors, (3349), 2176 states have internal predecessors, (3349), 429 states have call successors, (429), 41 states have call predecessors, (429), 41 states have return successors, (429), 415 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-15 21:23:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4207 transitions. [2023-12-15 21:23:51,779 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4207 transitions. Word has length 477 [2023-12-15 21:23:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:51,779 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 4207 transitions. [2023-12-15 21:23:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.90909090909091) internal successors, (197), 11 states have internal predecessors, (197), 3 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2023-12-15 21:23:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4207 transitions. [2023-12-15 21:23:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-15 21:23:51,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:51,786 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:51,799 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 21:23:51,994 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 21:23:51,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:51,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash 58302681, now seen corresponding path program 1 times [2023-12-15 21:23:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:51,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254327339] [2023-12-15 21:23:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:52,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693068299] [2023-12-15 21:23:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:52,049 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 21:23:52,075 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 21:23:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:52,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:23:52,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-15 21:23:53,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:53,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254327339] [2023-12-15 21:23:53,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693068299] [2023-12-15 21:23:53,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693068299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:53,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:53,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:23:53,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242242059] [2023-12-15 21:23:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:53,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:23:53,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:23:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:53,539 INFO L87 Difference]: Start difference. First operand 2633 states and 4207 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:53,960 INFO L93 Difference]: Finished difference Result 7710 states and 12546 transitions. [2023-12-15 21:23:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:23:53,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 478 [2023-12-15 21:23:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:53,982 INFO L225 Difference]: With dead ends: 7710 [2023-12-15 21:23:53,982 INFO L226 Difference]: Without dead ends: 5226 [2023-12-15 21:23:53,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 474 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 21:23:53,989 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 860 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:53,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1554 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:23:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2023-12-15 21:23:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 2638. [2023-12-15 21:23:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2167 states have (on average 1.5482233502538072) internal successors, (3355), 2181 states have internal predecessors, (3355), 429 states have call successors, (429), 41 states have call predecessors, (429), 41 states have return successors, (429), 415 states have call predecessors, (429), 429 states have call successors, (429) [2023-12-15 21:23:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4213 transitions. [2023-12-15 21:23:54,150 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4213 transitions. Word has length 478 [2023-12-15 21:23:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:54,151 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 4213 transitions. [2023-12-15 21:23:54,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-15 21:23:54,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4213 transitions. [2023-12-15 21:23:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-15 21:23:54,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:54,158 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:54,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:54,366 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 21:23:54,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:54,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash 805225751, now seen corresponding path program 1 times [2023-12-15 21:23:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:54,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473401742] [2023-12-15 21:23:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:54,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:54,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120165908] [2023-12-15 21:23:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:54,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:54,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:54,418 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 21:23:54,429 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 21:23:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:55,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-15 21:23:55,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 21:24:33,886 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:24:33,887 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 21:24:34,900 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 21:24:35,087 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 21:24:35,100 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:24:35,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 21:24:35,101 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 479 with TraceHistMax 69,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-15 21:24:35,104 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:35,107 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:24:35,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:24:35 BoogieIcfgContainer [2023-12-15 21:24:35,109 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:24:35,110 INFO L158 Benchmark]: Toolchain (without parser) took 61409.00ms. Allocated memory was 194.0MB in the beginning and 788.5MB in the end (delta: 594.5MB). Free memory was 141.4MB in the beginning and 290.9MB in the end (delta: -149.5MB). Peak memory consumption was 465.5MB. Max. memory is 8.0GB. [2023-12-15 21:24:35,110 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:24:35,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.68ms. Allocated memory is still 194.0MB. Free memory was 141.0MB in the beginning and 104.7MB in the end (delta: 36.4MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-15 21:24:35,110 INFO L158 Benchmark]: Boogie Procedure Inliner took 159.04ms. Allocated memory was 194.0MB in the beginning and 319.8MB in the end (delta: 125.8MB). Free memory was 104.7MB in the beginning and 272.6MB in the end (delta: -167.9MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2023-12-15 21:24:35,111 INFO L158 Benchmark]: Boogie Preprocessor took 174.53ms. Allocated memory is still 319.8MB. Free memory was 272.6MB in the beginning and 239.4MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-15 21:24:35,111 INFO L158 Benchmark]: RCFGBuilder took 1184.01ms. Allocated memory is still 319.8MB. Free memory was 239.4MB in the beginning and 144.6MB in the end (delta: 94.8MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. [2023-12-15 21:24:35,112 INFO L158 Benchmark]: TraceAbstraction took 59237.90ms. Allocated memory was 319.8MB in the beginning and 788.5MB in the end (delta: 468.7MB). Free memory was 144.1MB in the beginning and 290.9MB in the end (delta: -146.8MB). Peak memory consumption was 340.8MB. Max. memory is 8.0GB. [2023-12-15 21:24:35,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-15 21:24:35,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 644.68ms. Allocated memory is still 194.0MB. Free memory was 141.0MB in the beginning and 104.7MB in the end (delta: 36.4MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 159.04ms. Allocated memory was 194.0MB in the beginning and 319.8MB in the end (delta: 125.8MB). Free memory was 104.7MB in the beginning and 272.6MB in the end (delta: -167.9MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 174.53ms. Allocated memory is still 319.8MB. Free memory was 272.6MB in the beginning and 239.4MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1184.01ms. Allocated memory is still 319.8MB. Free memory was 239.4MB in the beginning and 144.6MB in the end (delta: 94.8MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. * TraceAbstraction took 59237.90ms. Allocated memory was 319.8MB in the beginning and 788.5MB in the end (delta: 468.7MB). Free memory was 144.1MB in the beginning and 290.9MB in the end (delta: -146.8MB). Peak memory consumption was 340.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 479 with TraceHistMax 69,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 267 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.2s, OverallIterations: 12, TraceHistogramMax: 69, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6621 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6510 mSDsluCounter, 13650 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7779 mSDsCounter, 762 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2605 IncrementalHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 762 mSolverCounterUnsat, 5871 mSDtfsCounter, 2605 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6661 GetRequests, 6596 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3659occurred in iteration=6, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 4137 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 5691 NumberOfCodeBlocks, 5691 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6630 ConstructedInterpolants, 0 QuantifiedInterpolants, 15755 SizeOfPredicates, 31 NumberOfNonLiveVariables, 12768 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 130824/131376 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