./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/recursive/recHanoi03-2.c -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 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 07:56:36,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 07:56:36,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 07:56:36,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 07:56:36,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 07:56:36,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 07:56:36,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 07:56:36,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 07:56:36,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 07:56:36,967 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 07:56:36,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 07:56:36,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 07:56:36,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 07:56:36,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 07:56:36,968 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 07:56:36,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 07:56:36,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 07:56:36,968 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 07:56:36,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 07:56:36,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 07:56:36,971 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 07:56:36,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 07:56:36,972 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 07:56:36,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 07:56:36,973 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 07:56:36,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 07:56:36,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 07:56:36,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 07:56:36,973 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 07:56:36,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 07:56:36,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 07:56:36,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 07:56:36,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:56:36,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 07:56:36,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 07:56:36,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 07:56:36,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 07:56:36,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 07:56:36,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 07:56:36,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 07:56:36,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 07:56:36,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 07:56:36,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 [2024-11-16 07:56:37,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 07:56:37,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 07:56:37,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 07:56:37,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 07:56:37,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 07:56:37,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi03-2.c [2024-11-16 07:56:38,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 07:56:38,626 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 07:56:38,626 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi03-2.c [2024-11-16 07:56:38,632 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d77f4753/245621f8ac6f4a85a89d20762222828e/FLAGb3ffb1921 [2024-11-16 07:56:38,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d77f4753/245621f8ac6f4a85a89d20762222828e [2024-11-16 07:56:38,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 07:56:38,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 07:56:38,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 07:56:38,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 07:56:38,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 07:56:38,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df432a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38, skipping insertion in model container [2024-11-16 07:56:38,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 07:56:38,796 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/recursive/recHanoi03-2.c[769,782] [2024-11-16 07:56:38,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:56:38,812 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 07:56:38,825 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/recursive/recHanoi03-2.c[769,782] [2024-11-16 07:56:38,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:56:38,839 INFO L204 MainTranslator]: Completed translation [2024-11-16 07:56:38,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38 WrapperNode [2024-11-16 07:56:38,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 07:56:38,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 07:56:38,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 07:56:38,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 07:56:38,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,863 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-16 07:56:38,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 07:56:38,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 07:56:38,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 07:56:38,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 07:56:38,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,886 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]. [2024-11-16 07:56:38,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,889 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 07:56:38,892 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 07:56:38,892 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 07:56:38,892 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 07:56:38,893 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (1/1) ... [2024-11-16 07:56:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:56:38,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:56:38,923 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) [2024-11-16 07:56:38,934 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 [2024-11-16 07:56:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 07:56:38,975 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-11-16 07:56:38,975 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-11-16 07:56:38,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 07:56:38,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 07:56:38,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 07:56:39,022 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 07:56:39,024 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 07:56:39,071 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: havoc #t~ret4; [2024-11-16 07:56:39,106 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-16 07:56:39,107 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 07:56:39,115 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 07:56:39,116 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 07:56:39,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:56:39 BoogieIcfgContainer [2024-11-16 07:56:39,116 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 07:56:39,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 07:56:39,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 07:56:39,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 07:56:39,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:56:38" (1/3) ... [2024-11-16 07:56:39,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ba08c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:56:39, skipping insertion in model container [2024-11-16 07:56:39,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:56:38" (2/3) ... [2024-11-16 07:56:39,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ba08c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:56:39, skipping insertion in model container [2024-11-16 07:56:39,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:56:39" (3/3) ... [2024-11-16 07:56:39,122 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2024-11-16 07:56:39,135 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 07:56:39,135 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 07:56:39,173 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 07:56:39,178 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;@4c734132, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 07:56:39,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 07:56:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 07:56:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 07:56:39,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:56:39,186 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:56:39,186 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:56:39,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:56:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2145442678, now seen corresponding path program 1 times [2024-11-16 07:56:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:56:39,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999720706] [2024-11-16 07:56:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:56:39,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:56:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:39,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:56:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 07:56:39,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:56:39,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999720706] [2024-11-16 07:56:39,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999720706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:56:39,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:56:39,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 07:56:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201716925] [2024-11-16 07:56:39,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:56:39,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 07:56:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:56:39,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 07:56:39,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 07:56:39,558 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 07:56:39,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:56:39,654 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-16 07:56:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 07:56:39,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-16 07:56:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:56:39,662 INFO L225 Difference]: With dead ends: 29 [2024-11-16 07:56:39,662 INFO L226 Difference]: Without dead ends: 17 [2024-11-16 07:56:39,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 07:56:39,668 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:56:39,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:56:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-16 07:56:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-16 07:56:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:56:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-16 07:56:39,703 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-11-16 07:56:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:56:39,705 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-16 07:56:39,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 07:56:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-16 07:56:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 07:56:39,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:56:39,707 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:56:39,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 07:56:39,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:56:39,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:56:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash -803054127, now seen corresponding path program 1 times [2024-11-16 07:56:39,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:56:39,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576713964] [2024-11-16 07:56:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:56:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:56:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:39,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:56:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:39,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 07:56:40,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:56:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576713964] [2024-11-16 07:56:40,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576713964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:56:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247939193] [2024-11-16 07:56:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:56:40,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:56:40,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:56:40,072 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) [2024-11-16 07:56:40,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 07:56:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:40,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 07:56:40,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:56:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 07:56:40,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:56:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 07:56:40,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247939193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:56:40,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:56:40,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2024-11-16 07:56:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799813011] [2024-11-16 07:56:40,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:56:40,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 07:56:40,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:56:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 07:56:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-16 07:56:40,547 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 20 states, 20 states have (on average 1.45) internal successors, (29), 14 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-16 07:56:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:56:40,664 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2024-11-16 07:56:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 07:56:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 14 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 18 [2024-11-16 07:56:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:56:40,665 INFO L225 Difference]: With dead ends: 30 [2024-11-16 07:56:40,666 INFO L226 Difference]: Without dead ends: 23 [2024-11-16 07:56:40,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-16 07:56:40,667 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:56:40,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 107 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:56:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-16 07:56:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-16 07:56:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 07:56:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-11-16 07:56:40,678 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2024-11-16 07:56:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:56:40,678 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-11-16 07:56:40,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 14 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-16 07:56:40,678 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-11-16 07:56:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 07:56:40,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:56:40,680 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:56:40,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 07:56:40,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:56:40,885 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:56:40,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:56:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1505065807, now seen corresponding path program 2 times [2024-11-16 07:56:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:56:40,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679173193] [2024-11-16 07:56:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:56:40,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:56:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:41,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:56:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:41,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:41,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:41,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 07:56:41,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:56:41,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679173193] [2024-11-16 07:56:41,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679173193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:56:41,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440224754] [2024-11-16 07:56:41,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 07:56:41,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:56:41,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:56:41,206 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) [2024-11-16 07:56:41,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 07:56:41,242 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 07:56:41,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:56:41,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 07:56:41,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:56:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 07:56:41,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:56:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 07:56:42,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440224754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:56:42,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:56:42,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 15] total 30 [2024-11-16 07:56:42,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873938756] [2024-11-16 07:56:42,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:56:42,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 07:56:42,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:56:42,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 07:56:42,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2024-11-16 07:56:42,211 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 20 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-16 07:56:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:56:42,441 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-16 07:56:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 07:56:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 20 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) Word has length 30 [2024-11-16 07:56:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:56:42,442 INFO L225 Difference]: With dead ends: 39 [2024-11-16 07:56:42,442 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 07:56:42,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=1325, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 07:56:42,444 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:56:42,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 160 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:56:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 07:56:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-16 07:56:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-16 07:56:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-16 07:56:42,449 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2024-11-16 07:56:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:56:42,450 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-16 07:56:42,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 20 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-16 07:56:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-16 07:56:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 07:56:42,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:56:42,451 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:56:42,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 07:56:42,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-16 07:56:42,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:56:42,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:56:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1290598614, now seen corresponding path program 3 times [2024-11-16 07:56:42,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:56:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787006597] [2024-11-16 07:56:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:56:42,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:56:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:42,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:56:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:42,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:42,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:42,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:43,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:43,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:43,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-16 07:56:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:56:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787006597] [2024-11-16 07:56:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787006597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:56:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691922558] [2024-11-16 07:56:43,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 07:56:43,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:56:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:56:43,185 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) [2024-11-16 07:56:43,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 07:56:43,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-16 07:56:43,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:56:43,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 07:56:43,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:56:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-16 07:56:43,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:56:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-16 07:56:46,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691922558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:56:46,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:56:46,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 24] total 45 [2024-11-16 07:56:46,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586459627] [2024-11-16 07:56:46,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:56:46,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 07:56:46,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:56:46,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 07:56:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1755, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 07:56:46,734 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 45 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 29 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-16 07:56:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:56:47,250 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2024-11-16 07:56:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 07:56:47,251 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 29 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) Word has length 48 [2024-11-16 07:56:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:56:47,252 INFO L225 Difference]: With dead ends: 57 [2024-11-16 07:56:47,252 INFO L226 Difference]: Without dead ends: 50 [2024-11-16 07:56:47,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=598, Invalid=3824, Unknown=0, NotChecked=0, Total=4422 [2024-11-16 07:56:47,255 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 80 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:56:47,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 302 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:56:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-16 07:56:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-16 07:56:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-16 07:56:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-16 07:56:47,261 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 48 [2024-11-16 07:56:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:56:47,261 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-16 07:56:47,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 29 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-16 07:56:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-16 07:56:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 07:56:47,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:56:47,263 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:56:47,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 07:56:47,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:56:47,464 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:56:47,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:56:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1802485302, now seen corresponding path program 4 times [2024-11-16 07:56:47,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:56:47,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146721968] [2024-11-16 07:56:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:56:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:56:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:47,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:56:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:47,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:48,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:49,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:56:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:56:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-16 07:56:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:56:49,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146721968] [2024-11-16 07:56:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146721968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:56:49,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589113099] [2024-11-16 07:56:49,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 07:56:49,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:56:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:56:49,083 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) [2024-11-16 07:56:49,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 07:56:49,171 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 07:56:49,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:56:49,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 07:56:49,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:56:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-16 07:56:50,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:57:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-16 07:57:10,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589113099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:57:10,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:57:10,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 42] total 75 [2024-11-16 07:57:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615081121] [2024-11-16 07:57:10,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:57:10,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 07:57:10,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:57:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 07:57:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=5001, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 07:57:10,143 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 75 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 47 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2024-11-16 07:57:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:57:11,662 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2024-11-16 07:57:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 07:57:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 47 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) Word has length 84 [2024-11-16 07:57:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:57:11,666 INFO L225 Difference]: With dead ends: 93 [2024-11-16 07:57:11,666 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 07:57:11,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1810, Invalid=12710, Unknown=0, NotChecked=0, Total=14520 [2024-11-16 07:57:11,676 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 206 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 07:57:11,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 716 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 07:57:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 07:57:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-16 07:57:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-16 07:57:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2024-11-16 07:57:11,693 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 84 [2024-11-16 07:57:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:57:11,693 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2024-11-16 07:57:11,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 47 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2024-11-16 07:57:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2024-11-16 07:57:11,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-16 07:57:11,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:57:11,696 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:57:11,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 07:57:11,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:57:11,897 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:57:11,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:57:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1217314570, now seen corresponding path program 5 times [2024-11-16 07:57:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:57:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086461708] [2024-11-16 07:57:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:57:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:57:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:12,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 07:57:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:12,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:13,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:13,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:14,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:14,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:14,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:14,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:15,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:15,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:15,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:15,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:15,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:16,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:17,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:17,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:17,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:57:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:57:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-11-16 07:57:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:57:17,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086461708] [2024-11-16 07:57:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086461708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:57:17,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542910513] [2024-11-16 07:57:17,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 07:57:17,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:57:17,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:57:17,341 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) [2024-11-16 07:57:17,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 07:57:17,616 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-16 07:57:17,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:57:17,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-16 07:57:17,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:57:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-11-16 07:57:20,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 07:57:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542910513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:57:20,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 07:57:20,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [54] total 106 [2024-11-16 07:57:20,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947305352] [2024-11-16 07:57:20,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:57:20,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 07:57:20,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:57:20,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 07:57:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=10341, Unknown=0, NotChecked=0, Total=11130 [2024-11-16 07:57:20,250 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-16 07:57:20,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:57:20,467 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2024-11-16 07:57:20,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 07:57:20,467 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) Word has length 156 [2024-11-16 07:57:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:57:20,469 INFO L225 Difference]: With dead ends: 86 [2024-11-16 07:57:20,469 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 07:57:20,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=789, Invalid=10341, Unknown=0, NotChecked=0, Total=11130 [2024-11-16 07:57:20,478 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:57:20,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 626 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:57:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 07:57:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 07:57:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 07:57:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 07:57:20,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 156 [2024-11-16 07:57:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:57:20,479 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 07:57:20,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-16 07:57:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 07:57:20,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 07:57:20,482 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 07:57:20,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 07:57:20,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:57:20,690 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1] [2024-11-16 07:57:20,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 07:57:21,023 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 07:57:21,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:57:21 BoogieIcfgContainer [2024-11-16 07:57:21,057 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 07:57:21,058 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 07:57:21,058 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 07:57:21,058 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 07:57:21,058 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:56:39" (3/4) ... [2024-11-16 07:57:21,060 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 07:57:21,063 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure hanoi [2024-11-16 07:57:21,065 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-16 07:57:21,065 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-16 07:57:21,065 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 07:57:21,065 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 07:57:21,145 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 07:57:21,145 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 07:57:21,145 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 07:57:21,145 INFO L158 Benchmark]: Toolchain (without parser) took 42500.83ms. Allocated memory was 186.6MB in the beginning and 790.6MB in the end (delta: 604.0MB). Free memory was 116.0MB in the beginning and 356.4MB in the end (delta: -240.4MB). Peak memory consumption was 366.8MB. Max. memory is 16.1GB. [2024-11-16 07:57:21,146 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 07:57:21,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.04ms. Allocated memory is still 186.6MB. Free memory was 115.6MB in the beginning and 103.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 07:57:21,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.96ms. Allocated memory is still 186.6MB. Free memory was 103.8MB in the beginning and 102.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 07:57:21,150 INFO L158 Benchmark]: Boogie Preprocessor took 27.58ms. Allocated memory is still 186.6MB. Free memory was 102.1MB in the beginning and 100.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 07:57:21,150 INFO L158 Benchmark]: IcfgBuilder took 224.53ms. Allocated memory is still 186.6MB. Free memory was 100.9MB in the beginning and 90.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 07:57:21,151 INFO L158 Benchmark]: TraceAbstraction took 41939.70ms. Allocated memory was 186.6MB in the beginning and 790.6MB in the end (delta: 604.0MB). Free memory was 89.1MB in the beginning and 360.6MB in the end (delta: -271.5MB). Peak memory consumption was 335.3MB. Max. memory is 16.1GB. [2024-11-16 07:57:21,151 INFO L158 Benchmark]: Witness Printer took 87.40ms. Allocated memory is still 790.6MB. Free memory was 360.6MB in the beginning and 356.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 07:57:21,152 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.04ms. Allocated memory is still 186.6MB. Free memory was 115.6MB in the beginning and 103.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.96ms. Allocated memory is still 186.6MB. Free memory was 103.8MB in the beginning and 102.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.58ms. Allocated memory is still 186.6MB. Free memory was 102.1MB in the beginning and 100.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 224.53ms. Allocated memory is still 186.6MB. Free memory was 100.9MB in the beginning and 90.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 41939.70ms. Allocated memory was 186.6MB in the beginning and 790.6MB in the end (delta: 604.0MB). Free memory was 89.1MB in the beginning and 360.6MB in the end (delta: -271.5MB). Peak memory consumption was 335.3MB. Max. memory is 16.1GB. * Witness Printer took 87.40ms. Allocated memory is still 790.6MB. Free memory was 360.6MB in the beginning and 356.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 35]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.5s, OverallIterations: 6, TraceHistogramMax: 25, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 364 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 313 mSDsluCounter, 1964 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1828 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2424 IncrementalHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 136 mSDtfsCounter, 2424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 815 GetRequests, 458 SyntacticMatches, 5 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4714 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=5, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 684 NumberOfCodeBlocks, 684 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 849 ConstructedInterpolants, 0 QuantifiedInterpolants, 3467 SizeOfPredicates, 22 NumberOfNonLiveVariables, 869 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 3326/5280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 18]: Procedure Contract for hanoi Derived contract for procedure hanoi. Ensures: ((((((((((((((((n <= 13) && (8191 <= \result)) || ((3 <= \result) && (n <= 2))) || ((n <= 11) && (2047 <= \result))) || ((n <= 6) && (63 <= \result))) || ((511 <= \result) && (n <= 9))) || ((n <= 7) && (127 <= \result))) || (33554430 < \result)) || ((n <= 8) && (255 <= \result))) || ((n <= 12) && (4095 <= \result))) || ((\result == 1) && (n == 1))) || ((n <= 5) && (31 <= \result))) || ((1023 <= \result) && (n <= 10))) || ((7 <= \result) && (n <= 3))) || ((16383 <= \result) && (((long long) 8178 + n) <= \result))) || ((15 <= \result) && (n <= 4))) RESULT: Ultimate proved your program to be correct! [2024-11-16 07:57:21,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE