./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b28318b64c584c946b04c5086a6c24adb23afe0fc28f8c52df4df9b28156611e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:43:54,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:43:54,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:43:54,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:43:54,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:43:54,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:43:54,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:43:54,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:43:54,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:43:54,970 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:43:54,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:43:54,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:43:54,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:43:54,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:43:54,973 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:43:54,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:43:54,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:43:54,974 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:43:54,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:43:54,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:43:54,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:43:54,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:43:54,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:43:54,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:43:54,980 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:43:54,980 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:43:54,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:43:54,981 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:43:54,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:43:54,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:43:54,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:43:54,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:43:54,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:43:54,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:43:54,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:43:54,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:43:54,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:43:54,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:43:54,985 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:43:54,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:43:54,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:43:54,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:43:54,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28318b64c584c946b04c5086a6c24adb23afe0fc28f8c52df4df9b28156611e [2024-11-18 23:43:55,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:43:55,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:43:55,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:43:55,276 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:43:55,276 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:43:55,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i [2024-11-18 23:43:56,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:43:56,956 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:43:56,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i [2024-11-18 23:43:56,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cc7ca54/baa9cfe3da4b4443b15db59e2117a0fd/FLAGa966b11c4 [2024-11-18 23:43:56,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cc7ca54/baa9cfe3da4b4443b15db59e2117a0fd [2024-11-18 23:43:56,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:43:56,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:43:57,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:43:57,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:43:57,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:43:57,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:56" (1/1) ... [2024-11-18 23:43:57,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c67b124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57, skipping insertion in model container [2024-11-18 23:43:57,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:56" (1/1) ... [2024-11-18 23:43:57,058 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:43:57,264 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i[916,929] [2024-11-18 23:43:57,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:43:57,429 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:43:57,442 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i[916,929] [2024-11-18 23:43:57,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:43:57,559 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:43:57,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57 WrapperNode [2024-11-18 23:43:57,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:43:57,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:43:57,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:43:57,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:43:57,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,671 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429 [2024-11-18 23:43:57,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:43:57,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:43:57,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:43:57,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:43:57,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,784 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]. [2024-11-18 23:43:57,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:43:57,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:43:57,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:43:57,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:43:57,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (1/1) ... [2024-11-18 23:43:57,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:43:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:57,898 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) [2024-11-18 23:43:57,904 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 [2024-11-18 23:43:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:43:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:43:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:43:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:43:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:43:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:43:58,088 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:43:58,090 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:43:58,870 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-18 23:43:58,870 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:43:58,894 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:43:58,894 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:43:58,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:58 BoogieIcfgContainer [2024-11-18 23:43:58,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:43:58,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:43:58,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:43:58,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:43:58,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:43:56" (1/3) ... [2024-11-18 23:43:58,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aec7e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:58, skipping insertion in model container [2024-11-18 23:43:58,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:57" (2/3) ... [2024-11-18 23:43:58,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aec7e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:58, skipping insertion in model container [2024-11-18 23:43:58,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:58" (3/3) ... [2024-11-18 23:43:58,904 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-46.i [2024-11-18 23:43:58,920 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:43:58,920 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:43:58,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:43:58,997 INFO L333 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, 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;@d099ab8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:43:58,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:43:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 116 states have (on average 1.4224137931034482) internal successors, (165), 117 states have internal predecessors, (165), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:43:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 23:43:59,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:59,029 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:59,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:59,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1354044998, now seen corresponding path program 1 times [2024-11-18 23:43:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934617623] [2024-11-18 23:43:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-18 23:43:59,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:59,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934617623] [2024-11-18 23:43:59,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934617623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:59,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266879826] [2024-11-18 23:43:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:59,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:59,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:59,708 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) [2024-11-18 23:43:59,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:44:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:00,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:44:00,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-18 23:44:00,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:44:00,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266879826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:00,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:44:00,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:44:00,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897269137] [2024-11-18 23:44:00,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:00,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:44:00,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:44:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:44:00,169 INFO L87 Difference]: Start difference. First operand has 175 states, 116 states have (on average 1.4224137931034482) internal successors, (165), 117 states have internal predecessors, (165), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-18 23:44:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:00,215 INFO L93 Difference]: Finished difference Result 343 states and 604 transitions. [2024-11-18 23:44:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:44:00,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) Word has length 365 [2024-11-18 23:44:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:00,230 INFO L225 Difference]: With dead ends: 343 [2024-11-18 23:44:00,232 INFO L226 Difference]: Without dead ends: 171 [2024-11-18 23:44:00,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:44:00,240 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:00,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:44:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-18 23:44:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-18 23:44:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.3982300884955752) internal successors, (158), 113 states have internal predecessors, (158), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:44:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 270 transitions. [2024-11-18 23:44:00,310 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 270 transitions. Word has length 365 [2024-11-18 23:44:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:00,310 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 270 transitions. [2024-11-18 23:44:00,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-18 23:44:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 270 transitions. [2024-11-18 23:44:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 23:44:00,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:00,320 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:00,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:44:00,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:44:00,525 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:00,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1931229902, now seen corresponding path program 1 times [2024-11-18 23:44:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192255188] [2024-11-18 23:44:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-18 23:44:00,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192255188] [2024-11-18 23:44:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192255188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:44:00,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150554719] [2024-11-18 23:44:00,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:00,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:44:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:00,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:44:00,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:44:00,962 INFO L87 Difference]: Start difference. First operand 171 states and 270 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-18 23:44:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:01,025 INFO L93 Difference]: Finished difference Result 340 states and 539 transitions. [2024-11-18 23:44:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:44:01,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2024-11-18 23:44:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:01,034 INFO L225 Difference]: With dead ends: 340 [2024-11-18 23:44:01,034 INFO L226 Difference]: Without dead ends: 172 [2024-11-18 23:44:01,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:44:01,036 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:01,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 531 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:44:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-18 23:44:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-18 23:44:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 114 states have (on average 1.394736842105263) internal successors, (159), 114 states have internal predecessors, (159), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:44:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 271 transitions. [2024-11-18 23:44:01,063 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 271 transitions. Word has length 365 [2024-11-18 23:44:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:01,066 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 271 transitions. [2024-11-18 23:44:01,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-18 23:44:01,066 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 271 transitions. [2024-11-18 23:44:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 23:44:01,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:01,069 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:01,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:44:01,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:01,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1854264304, now seen corresponding path program 1 times [2024-11-18 23:44:01,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:01,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129495604] [2024-11-18 23:44:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:01,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-18 23:44:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129495604] [2024-11-18 23:44:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129495604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:03,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:03,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:44:03,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349538459] [2024-11-18 23:44:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:03,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:44:03,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:44:03,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:44:03,109 INFO L87 Difference]: Start difference. First operand 172 states and 271 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-18 23:44:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:03,311 INFO L93 Difference]: Finished difference Result 479 states and 754 transitions. [2024-11-18 23:44:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:44:03,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2024-11-18 23:44:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:03,322 INFO L225 Difference]: With dead ends: 479 [2024-11-18 23:44:03,323 INFO L226 Difference]: Without dead ends: 310 [2024-11-18 23:44:03,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:44:03,325 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 194 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:03,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 891 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:44:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-18 23:44:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 192. [2024-11-18 23:44:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 134 states have internal predecessors, (191), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:44:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 303 transitions. [2024-11-18 23:44:03,351 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 303 transitions. Word has length 365 [2024-11-18 23:44:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:03,352 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 303 transitions. [2024-11-18 23:44:03,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-18 23:44:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 303 transitions. [2024-11-18 23:44:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 23:44:03,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:03,355 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:03,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:44:03,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:03,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash -195123538, now seen corresponding path program 1 times [2024-11-18 23:44:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:03,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034166611] [2024-11-18 23:44:03,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:03,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-18 23:44:04,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034166611] [2024-11-18 23:44:04,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034166611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:04,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:04,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:44:04,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084174573] [2024-11-18 23:44:04,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:04,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:44:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:44:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:44:04,866 INFO L87 Difference]: Start difference. First operand 192 states and 303 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-18 23:44:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:05,600 INFO L93 Difference]: Finished difference Result 666 states and 1050 transitions. [2024-11-18 23:44:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:44:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2024-11-18 23:44:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:05,606 INFO L225 Difference]: With dead ends: 666 [2024-11-18 23:44:05,606 INFO L226 Difference]: Without dead ends: 477 [2024-11-18 23:44:05,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:44:05,608 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 397 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:05,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1094 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:44:05,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-18 23:44:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 355. [2024-11-18 23:44:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 239 states have (on average 1.4142259414225942) internal successors, (338), 239 states have internal predecessors, (338), 112 states have call successors, (112), 3 states have call predecessors, (112), 3 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 23:44:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 562 transitions. [2024-11-18 23:44:05,666 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 562 transitions. Word has length 365 [2024-11-18 23:44:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:05,667 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 562 transitions. [2024-11-18 23:44:05,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-18 23:44:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 562 transitions. [2024-11-18 23:44:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 23:44:05,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:05,670 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:05,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:44:05,671 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:05,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1783471440, now seen corresponding path program 1 times [2024-11-18 23:44:05,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:05,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481362179] [2024-11-18 23:44:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:05,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 57 proven. 108 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-18 23:44:08,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:08,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481362179] [2024-11-18 23:44:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481362179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:08,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923502494] [2024-11-18 23:44:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:08,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:08,523 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) [2024-11-18 23:44:08,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:44:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:08,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 23:44:08,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3482 proven. 228 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-18 23:44:09,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 96 proven. 231 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2024-11-18 23:44:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923502494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:10,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-18 23:44:10,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025660169] [2024-11-18 23:44:10,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:10,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:44:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:44:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:44:10,469 INFO L87 Difference]: Start difference. First operand 355 states and 562 transitions. Second operand has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 6 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (148), 6 states have call predecessors, (148), 6 states have call successors, (148) [2024-11-18 23:44:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:11,319 INFO L93 Difference]: Finished difference Result 625 states and 966 transitions. [2024-11-18 23:44:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 23:44:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 6 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (148), 6 states have call predecessors, (148), 6 states have call successors, (148) Word has length 365 [2024-11-18 23:44:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:11,327 INFO L225 Difference]: With dead ends: 625 [2024-11-18 23:44:11,327 INFO L226 Difference]: Without dead ends: 387 [2024-11-18 23:44:11,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2024-11-18 23:44:11,329 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 838 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:11,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 707 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:44:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-18 23:44:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 379. [2024-11-18 23:44:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 257 states have (on average 1.350194552529183) internal successors, (347), 257 states have internal predecessors, (347), 112 states have call successors, (112), 9 states have call predecessors, (112), 9 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 23:44:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2024-11-18 23:44:11,369 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 365 [2024-11-18 23:44:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:11,370 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2024-11-18 23:44:11,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 6 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (148), 6 states have call predecessors, (148), 6 states have call successors, (148) [2024-11-18 23:44:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2024-11-18 23:44:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-18 23:44:11,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:11,373 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:11,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:44:11,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:11,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:11,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash -875746726, now seen corresponding path program 1 times [2024-11-18 23:44:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237334945] [2024-11-18 23:44:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 108 proven. 57 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-18 23:44:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237334945] [2024-11-18 23:44:13,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237334945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882123301] [2024-11-18 23:44:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:13,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:13,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:13,813 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) [2024-11-18 23:44:13,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:44:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:14,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 23:44:14,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2583 proven. 117 refuted. 0 times theorem prover too weak. 3460 trivial. 0 not checked. [2024-11-18 23:44:14,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 48 proven. 117 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-18 23:44:14,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882123301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:14,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2024-11-18 23:44:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272636006] [2024-11-18 23:44:14,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:14,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:44:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:44:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:44:14,856 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 5 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) [2024-11-18 23:44:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:16,288 INFO L93 Difference]: Finished difference Result 703 states and 1046 transitions. [2024-11-18 23:44:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 23:44:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 5 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) Word has length 366 [2024-11-18 23:44:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:16,293 INFO L225 Difference]: With dead ends: 703 [2024-11-18 23:44:16,293 INFO L226 Difference]: Without dead ends: 430 [2024-11-18 23:44:16,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 23:44:16,295 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 972 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:16,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1353 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:44:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-18 23:44:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 331. [2024-11-18 23:44:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 206 states have (on average 1.2572815533980584) internal successors, (259), 206 states have internal predecessors, (259), 112 states have call successors, (112), 12 states have call predecessors, (112), 12 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 23:44:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 483 transitions. [2024-11-18 23:44:16,354 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 483 transitions. Word has length 366 [2024-11-18 23:44:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:16,355 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 483 transitions. [2024-11-18 23:44:16,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 5 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) [2024-11-18 23:44:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 483 transitions. [2024-11-18 23:44:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-18 23:44:16,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:16,358 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:16,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:44:16,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:16,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:16,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:16,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1489336280, now seen corresponding path program 1 times [2024-11-18 23:44:16,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:16,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41923626] [2024-11-18 23:44:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 99 proven. 66 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-18 23:44:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:18,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41923626] [2024-11-18 23:44:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41923626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218260887] [2024-11-18 23:44:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:18,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:18,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:18,735 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) [2024-11-18 23:44:18,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:44:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:19,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:44:19,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3025 proven. 66 refuted. 0 times theorem prover too weak. 3069 trivial. 0 not checked. [2024-11-18 23:44:19,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 99 proven. 66 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-18 23:44:19,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218260887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:19,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:19,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 23:44:19,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875737536] [2024-11-18 23:44:19,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:19,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:44:19,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:44:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:44:19,671 INFO L87 Difference]: Start difference. First operand 331 states and 483 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-11-18 23:44:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:20,020 INFO L93 Difference]: Finished difference Result 552 states and 802 transitions. [2024-11-18 23:44:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:44:20,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 366 [2024-11-18 23:44:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:20,024 INFO L225 Difference]: With dead ends: 552 [2024-11-18 23:44:20,024 INFO L226 Difference]: Without dead ends: 347 [2024-11-18 23:44:20,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 729 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:44:20,026 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 239 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:20,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 495 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:44:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-18 23:44:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339. [2024-11-18 23:44:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 212 states have (on average 1.2452830188679245) internal successors, (264), 212 states have internal predecessors, (264), 112 states have call successors, (112), 14 states have call predecessors, (112), 14 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 23:44:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 488 transitions. [2024-11-18 23:44:20,069 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 488 transitions. Word has length 366 [2024-11-18 23:44:20,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:20,070 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 488 transitions. [2024-11-18 23:44:20,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-11-18 23:44:20,070 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 488 transitions. [2024-11-18 23:44:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-18 23:44:20,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:20,072 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:20,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 23:44:20,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:20,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:20,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash -99011622, now seen corresponding path program 1 times [2024-11-18 23:44:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:20,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382575595] [2024-11-18 23:44:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:20,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 372 proven. 393 refuted. 0 times theorem prover too weak. 5395 trivial. 0 not checked. [2024-11-18 23:44:30,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382575595] [2024-11-18 23:44:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382575595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224575578] [2024-11-18 23:44:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:30,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:30,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:30,630 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) [2024-11-18 23:44:30,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:44:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:31,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 23:44:31,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 4678 proven. 397 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2024-11-18 23:44:33,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 405 proven. 237 refuted. 0 times theorem prover too weak. 5518 trivial. 0 not checked. [2024-11-18 23:44:38,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224575578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:38,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:38,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 18] total 51 [2024-11-18 23:44:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050423354] [2024-11-18 23:44:38,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:38,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-18 23:44:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:38,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-18 23:44:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=2068, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 23:44:38,857 INFO L87 Difference]: Start difference. First operand 339 states and 488 transitions. Second operand has 51 states, 48 states have (on average 5.541666666666667) internal successors, (266), 47 states have internal predecessors, (266), 20 states have call successors, (157), 7 states have call predecessors, (157), 14 states have return successors, (158), 19 states have call predecessors, (158), 20 states have call successors, (158) [2024-11-18 23:44:52,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:52,779 INFO L93 Difference]: Finished difference Result 1382 states and 1929 transitions. [2024-11-18 23:44:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-18 23:44:52,780 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 5.541666666666667) internal successors, (266), 47 states have internal predecessors, (266), 20 states have call successors, (157), 7 states have call predecessors, (157), 14 states have return successors, (158), 19 states have call predecessors, (158), 20 states have call successors, (158) Word has length 366 [2024-11-18 23:44:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:52,787 INFO L225 Difference]: With dead ends: 1382 [2024-11-18 23:44:52,787 INFO L226 Difference]: Without dead ends: 1173 [2024-11-18 23:44:52,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 730 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11851 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=5875, Invalid=28165, Unknown=0, NotChecked=0, Total=34040 [2024-11-18 23:44:52,799 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 6484 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 5919 mSolverCounterSat, 1708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6487 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 7627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1708 IncrementalHoareTripleChecker+Valid, 5919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:52,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6487 Valid, 3762 Invalid, 7627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1708 Valid, 5919 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-18 23:44:52,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2024-11-18 23:44:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 949. [2024-11-18 23:44:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 646 states have (on average 1.261609907120743) internal successors, (815), 648 states have internal predecessors, (815), 248 states have call successors, (248), 54 states have call predecessors, (248), 54 states have return successors, (248), 246 states have call predecessors, (248), 248 states have call successors, (248) [2024-11-18 23:44:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1311 transitions. [2024-11-18 23:44:52,948 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1311 transitions. Word has length 366 [2024-11-18 23:44:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:52,949 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1311 transitions. [2024-11-18 23:44:52,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 5.541666666666667) internal successors, (266), 47 states have internal predecessors, (266), 20 states have call successors, (157), 7 states have call predecessors, (157), 14 states have return successors, (158), 19 states have call predecessors, (158), 20 states have call successors, (158) [2024-11-18 23:44:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1311 transitions. [2024-11-18 23:44:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-18 23:44:52,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:52,952 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:52,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 23:44:53,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:53,157 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:53,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2108872837, now seen corresponding path program 1 times [2024-11-18 23:44:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472803155] [2024-11-18 23:44:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat