./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:00:39,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:00:39,689 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:00:39,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:00:39,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:00:39,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:00:39,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:00:39,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:00:39,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:00:39,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:00:39,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:00:39,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:00:39,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:00:39,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:00:39,721 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:00:39,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:00:39,722 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:00:39,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:00:39,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:00:39,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:00:39,723 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:00:39,725 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:00:39,726 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:00:39,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:00:39,726 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:00:39,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:00:39,726 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:00:39,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:00:39,726 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:00:39,727 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:00:39,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:00:39,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:00:39,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:00:39,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:00:39,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:00:39,728 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:00:39,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:00:39,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:00:39,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:00:39,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:00:39,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:00:39,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:00:39,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 [2024-11-10 15:00:39,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:00:39,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:00:39,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:00:39,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:00:39,941 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:00:39,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2024-11-10 15:00:41,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:00:41,303 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:00:41,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2024-11-10 15:00:41,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c0df88c/b5399aced12a4ec98d8f748cf4f99d55/FLAG540348abb [2024-11-10 15:00:41,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c0df88c/b5399aced12a4ec98d8f748cf4f99d55 [2024-11-10 15:00:41,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:00:41,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:00:41,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:00:41,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:00:41,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:00:41,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56eec42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41, skipping insertion in model container [2024-11-10 15:00:41,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:00:41,614 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 15:00:41,615 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 15:00:41,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:00:41,629 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:00:41,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:00:41,701 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:00:41,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41 WrapperNode [2024-11-10 15:00:41,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:00:41,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:00:41,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:00:41,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:00:41,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,739 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2024-11-10 15:00:41,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:00:41,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:00:41,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:00:41,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:00:41,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,760 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [5, 4]. 56 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-10 15:00:41,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,764 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:00:41,768 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:00:41,769 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:00:41,769 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:00:41,769 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (1/1) ... [2024-11-10 15:00:41,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:00:41,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:41,796 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) [2024-11-10 15:00:41,798 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 [2024-11-10 15:00:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:00:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 15:00:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:00:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:00:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:00:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:00:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:00:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:00:41,910 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:00:41,911 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:00:42,048 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L550: havoc main_#t~nondet19#1;havoc main_#t~ret20#1;call ULTIMATE.dealloc(main_#t~malloc13#1.base, main_#t~malloc13#1.offset);havoc main_#t~malloc13#1.base, main_#t~malloc13#1.offset;call ULTIMATE.dealloc(main_#t~malloc14#1.base, main_#t~malloc14#1.offset);havoc main_#t~malloc14#1.base, main_#t~malloc14#1.offset; [2024-11-10 15:00:42,061 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-11-10 15:00:42,064 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:00:42,074 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:00:42,074 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:00:42,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:00:42 BoogieIcfgContainer [2024-11-10 15:00:42,075 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:00:42,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:00:42,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:00:42,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:00:42,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:00:41" (1/3) ... [2024-11-10 15:00:42,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437bbf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:00:42, skipping insertion in model container [2024-11-10 15:00:42,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:00:41" (2/3) ... [2024-11-10 15:00:42,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437bbf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:00:42, skipping insertion in model container [2024-11-10 15:00:42,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:00:42" (3/3) ... [2024-11-10 15:00:42,081 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncmp-alloca-2.i [2024-11-10 15:00:42,092 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:00:42,092 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-11-10 15:00:42,122 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:00:42,128 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=None, 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;@93ffe7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:00:42,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-10 15:00:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 56 states have internal predecessors, (67), 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) [2024-11-10 15:00:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:00:42,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:42,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:42,138 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:42,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1472077321, now seen corresponding path program 1 times [2024-11-10 15:00:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:42,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286566658] [2024-11-10 15:00:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:42,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286566658] [2024-11-10 15:00:42,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286566658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:42,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:42,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:00:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886980220] [2024-11-10 15:00:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:42,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:00:42,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:00:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:42,419 INFO L87 Difference]: Start difference. First operand has 57 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 56 states have internal predecessors, (67), 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-10 15:00:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:42,461 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2024-11-10 15:00:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:00:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2024-11-10 15:00:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:42,469 INFO L225 Difference]: With dead ends: 71 [2024-11-10 15:00:42,469 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 15:00:42,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:42,473 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 12 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:42,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 166 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 15:00:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2024-11-10 15:00:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 57 states have internal predecessors, (66), 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) [2024-11-10 15:00:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-11-10 15:00:42,500 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 8 [2024-11-10 15:00:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:42,500 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-11-10 15:00:42,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-10 15:00:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-11-10 15:00:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:00:42,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:42,501 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:42,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:00:42,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:42,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1443448170, now seen corresponding path program 1 times [2024-11-10 15:00:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:42,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901020864] [2024-11-10 15:00:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:42,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:42,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901020864] [2024-11-10 15:00:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901020864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:42,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:00:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147340570] [2024-11-10 15:00:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:42,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:00:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:00:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:00:42,631 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-10 15:00:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:42,693 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2024-11-10 15:00:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:00:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2024-11-10 15:00:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:42,695 INFO L225 Difference]: With dead ends: 56 [2024-11-10 15:00:42,695 INFO L226 Difference]: Without dead ends: 56 [2024-11-10 15:00:42,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:00:42,696 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:42,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 73 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:42,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-10 15:00:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-10 15:00:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.641025641025641) internal successors, (64), 55 states have internal predecessors, (64), 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) [2024-11-10 15:00:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-10 15:00:42,704 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 8 [2024-11-10 15:00:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:42,705 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-10 15:00:42,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-10 15:00:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-10 15:00:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:00:42,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:42,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:42,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:00:42,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:42,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1443448169, now seen corresponding path program 1 times [2024-11-10 15:00:42,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:42,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16233155] [2024-11-10 15:00:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:42,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:42,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:42,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16233155] [2024-11-10 15:00:42,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16233155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:42,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:42,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:00:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245675461] [2024-11-10 15:00:42,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:42,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:00:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:00:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:00:42,935 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-11-10 15:00:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:43,018 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2024-11-10 15:00:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:00:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) Word has length 8 [2024-11-10 15:00:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:43,020 INFO L225 Difference]: With dead ends: 60 [2024-11-10 15:00:43,020 INFO L226 Difference]: Without dead ends: 60 [2024-11-10 15:00:43,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:43,022 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 23 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:43,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 127 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-10 15:00:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-10 15:00:43,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.619047619047619) internal successors, (68), 58 states have internal predecessors, (68), 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) [2024-11-10 15:00:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-11-10 15:00:43,026 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 8 [2024-11-10 15:00:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:43,026 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-11-10 15:00:43,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-11-10 15:00:43,026 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-11-10 15:00:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 15:00:43,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:43,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:43,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:00:43,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:43,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1253711680, now seen corresponding path program 1 times [2024-11-10 15:00:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:43,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125272402] [2024-11-10 15:00:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:43,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:43,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125272402] [2024-11-10 15:00:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125272402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:43,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:00:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113205783] [2024-11-10 15:00:43,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:43,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:00:43,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:00:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:43,071 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-10 15:00:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:43,099 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2024-11-10 15:00:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:00:43,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2024-11-10 15:00:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:43,101 INFO L225 Difference]: With dead ends: 79 [2024-11-10 15:00:43,101 INFO L226 Difference]: Without dead ends: 79 [2024-11-10 15:00:43,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:43,102 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:43,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-10 15:00:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-11-10 15:00:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 72 states have internal predecessors, (85), 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) [2024-11-10 15:00:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2024-11-10 15:00:43,108 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 11 [2024-11-10 15:00:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:43,108 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2024-11-10 15:00:43,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-10 15:00:43,110 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2024-11-10 15:00:43,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 15:00:43,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:43,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:43,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:00:43,111 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:43,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1298445281, now seen corresponding path program 1 times [2024-11-10 15:00:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:43,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991883128] [2024-11-10 15:00:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991883128] [2024-11-10 15:00:43,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991883128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:43,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:43,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:00:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61169016] [2024-11-10 15:00:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:43,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:00:43,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:00:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:00:43,167 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-10 15:00:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:43,203 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-10 15:00:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:00:43,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2024-11-10 15:00:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:43,206 INFO L225 Difference]: With dead ends: 71 [2024-11-10 15:00:43,206 INFO L226 Difference]: Without dead ends: 71 [2024-11-10 15:00:43,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:00:43,210 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:43,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-10 15:00:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-10 15:00:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 70 states have internal predecessors, (83), 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) [2024-11-10 15:00:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2024-11-10 15:00:43,215 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 11 [2024-11-10 15:00:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:43,215 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2024-11-10 15:00:43,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-10 15:00:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2024-11-10 15:00:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 15:00:43,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:43,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:43,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:00:43,217 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:43,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1298445280, now seen corresponding path program 1 times [2024-11-10 15:00:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:43,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473459865] [2024-11-10 15:00:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:43,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:43,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:43,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473459865] [2024-11-10 15:00:43,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473459865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:43,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:00:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683732609] [2024-11-10 15:00:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:43,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:00:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:43,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:00:43,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:43,359 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-10 15:00:43,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:43,451 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2024-11-10 15:00:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:00:43,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) Word has length 11 [2024-11-10 15:00:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:43,452 INFO L225 Difference]: With dead ends: 75 [2024-11-10 15:00:43,453 INFO L226 Difference]: Without dead ends: 75 [2024-11-10 15:00:43,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:00:43,454 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:43,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 158 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:43,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-10 15:00:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-10 15:00:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 73 states have internal predecessors, (87), 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) [2024-11-10 15:00:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2024-11-10 15:00:43,461 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 11 [2024-11-10 15:00:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:43,461 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2024-11-10 15:00:43,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-10 15:00:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2024-11-10 15:00:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 15:00:43,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:43,462 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:43,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 15:00:43,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:43,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash 210354450, now seen corresponding path program 1 times [2024-11-10 15:00:43,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298493212] [2024-11-10 15:00:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:43,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298493212] [2024-11-10 15:00:43,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298493212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:43,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:43,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:00:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202725267] [2024-11-10 15:00:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:43,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:00:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:00:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:43,569 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-10 15:00:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:43,608 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2024-11-10 15:00:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:00:43,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 12 [2024-11-10 15:00:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:43,609 INFO L225 Difference]: With dead ends: 88 [2024-11-10 15:00:43,610 INFO L226 Difference]: Without dead ends: 88 [2024-11-10 15:00:43,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:43,611 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:43,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 133 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:43,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-10 15:00:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-10 15:00:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 86 states have internal predecessors, (103), 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) [2024-11-10 15:00:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2024-11-10 15:00:43,615 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 12 [2024-11-10 15:00:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:43,615 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2024-11-10 15:00:43,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-10 15:00:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2024-11-10 15:00:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 15:00:43,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:43,615 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:43,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 15:00:43,616 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:43,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash 13840945, now seen corresponding path program 1 times [2024-11-10 15:00:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461756547] [2024-11-10 15:00:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:43,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461756547] [2024-11-10 15:00:43,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461756547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:43,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:43,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:00:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801877951] [2024-11-10 15:00:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:43,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:00:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:00:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:00:43,789 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-10 15:00:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:43,820 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-10 15:00:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:00:43,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12 [2024-11-10 15:00:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:43,821 INFO L225 Difference]: With dead ends: 86 [2024-11-10 15:00:43,821 INFO L226 Difference]: Without dead ends: 86 [2024-11-10 15:00:43,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:00:43,822 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:43,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-10 15:00:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2024-11-10 15:00:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 72 states have internal predecessors, (86), 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) [2024-11-10 15:00:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2024-11-10 15:00:43,827 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 12 [2024-11-10 15:00:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:43,827 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2024-11-10 15:00:43,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-10 15:00:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2024-11-10 15:00:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 15:00:43,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:43,830 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:43,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 15:00:43,830 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:43,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash 73049721, now seen corresponding path program 1 times [2024-11-10 15:00:43,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:43,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605856970] [2024-11-10 15:00:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:43,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605856970] [2024-11-10 15:00:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605856970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705464940] [2024-11-10 15:00:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:44,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:44,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:44,003 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) [2024-11-10 15:00:44,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:00:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:44,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:00:44,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:44,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:00:44,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 15:00:44,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 15:00:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:44,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:44,399 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:00:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:44,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705464940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:44,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:44,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-10 15:00:44,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877908977] [2024-11-10 15:00:44,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:44,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:00:44,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:00:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:00:44,416 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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) [2024-11-10 15:00:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:44,554 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2024-11-10 15:00:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:00:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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) Word has length 12 [2024-11-10 15:00:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:44,555 INFO L225 Difference]: With dead ends: 78 [2024-11-10 15:00:44,556 INFO L226 Difference]: Without dead ends: 78 [2024-11-10 15:00:44,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-10 15:00:44,557 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:44,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 185 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-10 15:00:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2024-11-10 15:00:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 65 states have internal predecessors, (76), 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) [2024-11-10 15:00:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-10 15:00:44,561 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 12 [2024-11-10 15:00:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:44,561 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-10 15:00:44,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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) [2024-11-10 15:00:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-10 15:00:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 15:00:44,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:44,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:44,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 15:00:44,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:44,763 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:44,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:44,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2068946658, now seen corresponding path program 1 times [2024-11-10 15:00:44,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:44,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157049944] [2024-11-10 15:00:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:44,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:44,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157049944] [2024-11-10 15:00:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157049944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:44,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:44,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:00:44,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902277339] [2024-11-10 15:00:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:44,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:00:44,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:00:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:44,828 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-10 15:00:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:44,840 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-11-10 15:00:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:00:44,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2024-11-10 15:00:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:44,841 INFO L225 Difference]: With dead ends: 69 [2024-11-10 15:00:44,841 INFO L226 Difference]: Without dead ends: 69 [2024-11-10 15:00:44,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:44,842 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:44,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-10 15:00:44,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-10 15:00:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 68 states have internal predecessors, (79), 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) [2024-11-10 15:00:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-10 15:00:44,848 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 13 [2024-11-10 15:00:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:44,848 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-10 15:00:44,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-10 15:00:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-10 15:00:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 15:00:44,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:44,849 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:44,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 15:00:44,849 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:44,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2029507133, now seen corresponding path program 1 times [2024-11-10 15:00:44,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:44,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49520311] [2024-11-10 15:00:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49520311] [2024-11-10 15:00:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49520311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:00:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631593867] [2024-11-10 15:00:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:44,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:00:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:00:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:44,973 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-11-10 15:00:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:45,000 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-11-10 15:00:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:00:45,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) Word has length 13 [2024-11-10 15:00:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:45,001 INFO L225 Difference]: With dead ends: 73 [2024-11-10 15:00:45,001 INFO L226 Difference]: Without dead ends: 73 [2024-11-10 15:00:45,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:45,002 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 29 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:45,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 92 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:45,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-10 15:00:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-11-10 15:00:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 68 states have internal predecessors, (79), 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) [2024-11-10 15:00:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-10 15:00:45,008 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 13 [2024-11-10 15:00:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:45,008 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-10 15:00:45,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-11-10 15:00:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-10 15:00:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-10 15:00:45,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:45,008 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:45,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 15:00:45,009 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:45,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 500441282, now seen corresponding path program 1 times [2024-11-10 15:00:45,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:45,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688774259] [2024-11-10 15:00:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688774259] [2024-11-10 15:00:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688774259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893910889] [2024-11-10 15:00:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:45,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:45,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:45,165 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) [2024-11-10 15:00:45,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:00:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:45,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 15:00:45,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:45,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 15:00:45,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:00:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:45,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893910889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:45,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-10 15:00:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650426664] [2024-11-10 15:00:45,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:45,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 15:00:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 15:00:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:00:45,521 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 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) [2024-11-10 15:00:45,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:45,705 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2024-11-10 15:00:45,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:00:45,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 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) Word has length 15 [2024-11-10 15:00:45,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:45,706 INFO L225 Difference]: With dead ends: 71 [2024-11-10 15:00:45,706 INFO L226 Difference]: Without dead ends: 71 [2024-11-10 15:00:45,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:00:45,707 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:45,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 309 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-10 15:00:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2024-11-10 15:00:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.4) internal successors, (77), 66 states have internal predecessors, (77), 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) [2024-11-10 15:00:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-11-10 15:00:45,708 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 15 [2024-11-10 15:00:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:45,708 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-11-10 15:00:45,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 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) [2024-11-10 15:00:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-11-10 15:00:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 15:00:45,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:45,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:45,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 15:00:45,913 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,SelfDestructingSolverStorable11 [2024-11-10 15:00:45,914 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:45,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash -701193863, now seen corresponding path program 1 times [2024-11-10 15:00:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016436074] [2024-11-10 15:00:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:45,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016436074] [2024-11-10 15:00:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016436074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:45,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:00:45,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973068719] [2024-11-10 15:00:45,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:45,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:00:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:00:45,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:45,951 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 15:00:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:45,978 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-11-10 15:00:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:00:45,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) Word has length 17 [2024-11-10 15:00:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:45,979 INFO L225 Difference]: With dead ends: 66 [2024-11-10 15:00:45,979 INFO L226 Difference]: Without dead ends: 66 [2024-11-10 15:00:45,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:45,979 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:45,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 76 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-10 15:00:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-10 15:00:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 64 states have internal predecessors, (75), 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) [2024-11-10 15:00:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-10 15:00:45,981 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 17 [2024-11-10 15:00:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:45,982 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-10 15:00:45,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 15:00:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-10 15:00:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 15:00:45,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:45,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:45,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 15:00:45,982 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:45,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash -701193862, now seen corresponding path program 1 times [2024-11-10 15:00:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025592066] [2024-11-10 15:00:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:46,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:46,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025592066] [2024-11-10 15:00:46,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025592066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:46,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:46,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:00:46,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13446587] [2024-11-10 15:00:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:46,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:00:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:00:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:46,050 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-10 15:00:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:46,102 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2024-11-10 15:00:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:00:46,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2024-11-10 15:00:46,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:46,103 INFO L225 Difference]: With dead ends: 94 [2024-11-10 15:00:46,103 INFO L226 Difference]: Without dead ends: 94 [2024-11-10 15:00:46,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:00:46,104 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:46,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 139 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-10 15:00:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2024-11-10 15:00:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 70 states have internal predecessors, (84), 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) [2024-11-10 15:00:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2024-11-10 15:00:46,106 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 17 [2024-11-10 15:00:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:46,106 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2024-11-10 15:00:46,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-10 15:00:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2024-11-10 15:00:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 15:00:46,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:46,107 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:46,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 15:00:46,107 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:46,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash -112327073, now seen corresponding path program 1 times [2024-11-10 15:00:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588213901] [2024-11-10 15:00:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:46,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:46,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588213901] [2024-11-10 15:00:46,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588213901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005786691] [2024-11-10 15:00:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:46,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:46,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:46,267 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) [2024-11-10 15:00:46,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:00:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:46,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 15:00:46,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:46,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-10 15:00:46,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:00:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:46,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:46,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005786691] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:46,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:00:46,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 16 [2024-11-10 15:00:46,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381553367] [2024-11-10 15:00:46,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:46,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:00:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:00:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-10 15:00:46,622 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-10 15:00:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:46,741 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2024-11-10 15:00:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:00:46,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) Word has length 17 [2024-11-10 15:00:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:46,742 INFO L225 Difference]: With dead ends: 71 [2024-11-10 15:00:46,742 INFO L226 Difference]: Without dead ends: 71 [2024-11-10 15:00:46,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:00:46,743 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:46,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 126 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-10 15:00:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-11-10 15:00:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.375) internal successors, (77), 64 states have internal predecessors, (77), 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) [2024-11-10 15:00:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2024-11-10 15:00:46,744 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 17 [2024-11-10 15:00:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:46,745 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2024-11-10 15:00:46,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-10 15:00:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2024-11-10 15:00:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-10 15:00:46,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:46,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:46,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 15:00:46,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:46,951 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:46,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -262234837, now seen corresponding path program 1 times [2024-11-10 15:00:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332229612] [2024-11-10 15:00:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332229612] [2024-11-10 15:00:47,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332229612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:00:47,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272895200] [2024-11-10 15:00:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:00:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:00:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:47,057 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-10 15:00:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,087 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-11-10 15:00:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:00:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) Word has length 18 [2024-11-10 15:00:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,088 INFO L225 Difference]: With dead ends: 64 [2024-11-10 15:00:47,088 INFO L226 Difference]: Without dead ends: 59 [2024-11-10 15:00:47,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:47,088 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 33 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-10 15:00:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-10 15:00:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 58 states have internal predecessors, (68), 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) [2024-11-10 15:00:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-11-10 15:00:47,090 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 18 [2024-11-10 15:00:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,090 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-11-10 15:00:47,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-10 15:00:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-11-10 15:00:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-10 15:00:47,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 15:00:47,094 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,095 INFO L85 PathProgramCache]: Analyzing trace with hash 462563254, now seen corresponding path program 1 times [2024-11-10 15:00:47,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324754365] [2024-11-10 15:00:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324754365] [2024-11-10 15:00:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324754365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:00:47,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771307445] [2024-11-10 15:00:47,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:00:47,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:00:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:00:47,134 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-10 15:00:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,168 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2024-11-10 15:00:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:00:47,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) Word has length 19 [2024-11-10 15:00:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,169 INFO L225 Difference]: With dead ends: 58 [2024-11-10 15:00:47,169 INFO L226 Difference]: Without dead ends: 58 [2024-11-10 15:00:47,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:47,170 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 79 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-10 15:00:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-10 15:00:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 57 states have internal predecessors, (66), 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) [2024-11-10 15:00:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-11-10 15:00:47,172 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 19 [2024-11-10 15:00:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,172 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-11-10 15:00:47,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-10 15:00:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-11-10 15:00:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-10 15:00:47,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,173 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 15:00:47,173 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash 462563255, now seen corresponding path program 1 times [2024-11-10 15:00:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021572794] [2024-11-10 15:00:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021572794] [2024-11-10 15:00:47,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021572794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:00:47,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348754918] [2024-11-10 15:00:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:00:47,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:00:47,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:00:47,293 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-11-10 15:00:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,355 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-10 15:00:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:00:47,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 19 [2024-11-10 15:00:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,356 INFO L225 Difference]: With dead ends: 64 [2024-11-10 15:00:47,356 INFO L226 Difference]: Without dead ends: 64 [2024-11-10 15:00:47,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:00:47,356 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 18 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-10 15:00:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2024-11-10 15:00:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 57 states have internal predecessors, (65), 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) [2024-11-10 15:00:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2024-11-10 15:00:47,358 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 19 [2024-11-10 15:00:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,358 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2024-11-10 15:00:47,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-11-10 15:00:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2024-11-10 15:00:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 15:00:47,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,358 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 15:00:47,359 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2141655591, now seen corresponding path program 1 times [2024-11-10 15:00:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310895116] [2024-11-10 15:00:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310895116] [2024-11-10 15:00:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310895116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:00:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628328259] [2024-11-10 15:00:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:00:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:00:47,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:00:47,388 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-10 15:00:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,415 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2024-11-10 15:00:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:00:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) Word has length 21 [2024-11-10 15:00:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,415 INFO L225 Difference]: With dead ends: 57 [2024-11-10 15:00:47,415 INFO L226 Difference]: Without dead ends: 57 [2024-11-10 15:00:47,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:00:47,416 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-10 15:00:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-10 15:00:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 56 states have internal predecessors, (64), 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) [2024-11-10 15:00:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2024-11-10 15:00:47,418 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 21 [2024-11-10 15:00:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,418 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2024-11-10 15:00:47,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-10 15:00:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2024-11-10 15:00:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 15:00:47,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 15:00:47,419 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2141655592, now seen corresponding path program 1 times [2024-11-10 15:00:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120398480] [2024-11-10 15:00:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120398480] [2024-11-10 15:00:47,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120398480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:00:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803511533] [2024-11-10 15:00:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:00:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:00:47,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:47,486 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-10 15:00:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,514 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2024-11-10 15:00:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:00:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) Word has length 21 [2024-11-10 15:00:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,515 INFO L225 Difference]: With dead ends: 58 [2024-11-10 15:00:47,515 INFO L226 Difference]: Without dead ends: 58 [2024-11-10 15:00:47,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:00:47,516 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-10 15:00:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-10 15:00:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.25) internal successors, (65), 57 states have internal predecessors, (65), 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) [2024-11-10 15:00:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2024-11-10 15:00:47,520 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 21 [2024-11-10 15:00:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,520 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2024-11-10 15:00:47,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-10 15:00:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2024-11-10 15:00:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-10 15:00:47,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 15:00:47,521 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash 841638000, now seen corresponding path program 1 times [2024-11-10 15:00:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522715237] [2024-11-10 15:00:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522715237] [2024-11-10 15:00:47,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522715237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:00:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710444362] [2024-11-10 15:00:47,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:00:47,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:00:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:00:47,574 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-10 15:00:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,599 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2024-11-10 15:00:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:00:47,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) Word has length 23 [2024-11-10 15:00:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,600 INFO L225 Difference]: With dead ends: 57 [2024-11-10 15:00:47,600 INFO L226 Difference]: Without dead ends: 57 [2024-11-10 15:00:47,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:00:47,601 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 79 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-10 15:00:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-10 15:00:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 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) [2024-11-10 15:00:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2024-11-10 15:00:47,603 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 23 [2024-11-10 15:00:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,603 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2024-11-10 15:00:47,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-10 15:00:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2024-11-10 15:00:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-10 15:00:47,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 15:00:47,604 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,604 INFO L85 PathProgramCache]: Analyzing trace with hash 841638001, now seen corresponding path program 1 times [2024-11-10 15:00:47,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338703196] [2024-11-10 15:00:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338703196] [2024-11-10 15:00:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338703196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 15:00:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671362087] [2024-11-10 15:00:47,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:00:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:00:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:00:47,749 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-10 15:00:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,834 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2024-11-10 15:00:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:00:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 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) Word has length 23 [2024-11-10 15:00:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,834 INFO L225 Difference]: With dead ends: 71 [2024-11-10 15:00:47,835 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 15:00:47,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:00:47,835 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 149 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 15:00:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-10 15:00:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 55 states have internal predecessors, (62), 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) [2024-11-10 15:00:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-10 15:00:47,837 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 23 [2024-11-10 15:00:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,837 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-10 15:00:47,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 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) [2024-11-10 15:00:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-10 15:00:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-10 15:00:47,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,837 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 15:00:47,838 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1407981217, now seen corresponding path program 1 times [2024-11-10 15:00:47,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324229019] [2024-11-10 15:00:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:47,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324229019] [2024-11-10 15:00:47,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324229019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:47,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 15:00:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957391029] [2024-11-10 15:00:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:47,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 15:00:47,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:47,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 15:00:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:00:47,953 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-10 15:00:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:47,983 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2024-11-10 15:00:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:00:47,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) Word has length 25 [2024-11-10 15:00:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:47,983 INFO L225 Difference]: With dead ends: 76 [2024-11-10 15:00:47,983 INFO L226 Difference]: Without dead ends: 49 [2024-11-10 15:00:47,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:00:47,984 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:47,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 178 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-10 15:00:47,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-10 15:00:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 48 states have internal predecessors, (53), 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) [2024-11-10 15:00:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-11-10 15:00:47,985 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 25 [2024-11-10 15:00:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:47,986 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-11-10 15:00:47,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-10 15:00:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-11-10 15:00:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-10 15:00:47,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:47,986 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:47,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 15:00:47,986 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:47,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1642221598, now seen corresponding path program 1 times [2024-11-10 15:00:47,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:47,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482600565] [2024-11-10 15:00:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:47,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:48,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:48,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482600565] [2024-11-10 15:00:48,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482600565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:48,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:48,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 15:00:48,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376765709] [2024-11-10 15:00:48,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:48,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:00:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:48,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:00:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:00:48,120 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2024-11-10 15:00:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:48,164 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-10 15:00:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:00:48,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) Word has length 25 [2024-11-10 15:00:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:48,165 INFO L225 Difference]: With dead ends: 77 [2024-11-10 15:00:48,165 INFO L226 Difference]: Without dead ends: 57 [2024-11-10 15:00:48,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:00:48,166 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:48,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 166 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-10 15:00:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2024-11-10 15:00:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.1875) internal successors, (57), 52 states have internal predecessors, (57), 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) [2024-11-10 15:00:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-11-10 15:00:48,167 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 25 [2024-11-10 15:00:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:48,167 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-11-10 15:00:48,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2024-11-10 15:00:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-11-10 15:00:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 15:00:48,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:48,167 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:48,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 15:00:48,168 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:48,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1769391168, now seen corresponding path program 1 times [2024-11-10 15:00:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:48,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907476711] [2024-11-10 15:00:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:48,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:48,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907476711] [2024-11-10 15:00:48,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907476711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:48,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532580671] [2024-11-10 15:00:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:48,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:48,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:48,292 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) [2024-11-10 15:00:48,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:00:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:48,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 15:00:48,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:48,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:48,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:00:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:00:48,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532580671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:48,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:48,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-10 15:00:48,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808791544] [2024-11-10 15:00:48,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:48,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:00:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:48,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:00:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:00:48,548 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 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) [2024-11-10 15:00:48,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:48,676 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-10 15:00:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:00:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 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) Word has length 29 [2024-11-10 15:00:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:48,677 INFO L225 Difference]: With dead ends: 65 [2024-11-10 15:00:48,677 INFO L226 Difference]: Without dead ends: 65 [2024-11-10 15:00:48,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:00:48,677 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:48,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 245 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-10 15:00:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2024-11-10 15:00:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 55 states have internal predecessors, (60), 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) [2024-11-10 15:00:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-10 15:00:48,681 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 29 [2024-11-10 15:00:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:48,681 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-10 15:00:48,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 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) [2024-11-10 15:00:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-10 15:00:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 15:00:48,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:48,682 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:48,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 15:00:48,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:48,883 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:48,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash -422137603, now seen corresponding path program 1 times [2024-11-10 15:00:48,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:48,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160029443] [2024-11-10 15:00:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:48,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160029443] [2024-11-10 15:00:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160029443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:49,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 15:00:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670676338] [2024-11-10 15:00:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:49,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:00:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:00:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:00:49,056 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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) [2024-11-10 15:00:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:49,109 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2024-11-10 15:00:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:00:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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) Word has length 31 [2024-11-10 15:00:49,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:49,109 INFO L225 Difference]: With dead ends: 68 [2024-11-10 15:00:49,109 INFO L226 Difference]: Without dead ends: 46 [2024-11-10 15:00:49,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:00:49,110 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:49,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-10 15:00:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-10 15:00:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 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) [2024-11-10 15:00:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2024-11-10 15:00:49,111 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 31 [2024-11-10 15:00:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:49,111 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2024-11-10 15:00:49,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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) [2024-11-10 15:00:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2024-11-10 15:00:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 15:00:49,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:49,112 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:49,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-10 15:00:49,112 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:49,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash -676874148, now seen corresponding path program 1 times [2024-11-10 15:00:49,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98857879] [2024-11-10 15:00:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:49,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98857879] [2024-11-10 15:00:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98857879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:49,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:00:49,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-10 15:00:49,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621131720] [2024-11-10 15:00:49,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:49,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:00:49,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:00:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:00:49,315 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2024-11-10 15:00:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:49,388 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2024-11-10 15:00:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:00:49,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) Word has length 31 [2024-11-10 15:00:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:49,389 INFO L225 Difference]: With dead ends: 62 [2024-11-10 15:00:49,389 INFO L226 Difference]: Without dead ends: 50 [2024-11-10 15:00:49,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:00:49,390 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:49,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 222 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-10 15:00:49,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-10 15:00:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 47 states have internal predecessors, (50), 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) [2024-11-10 15:00:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-10 15:00:49,391 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 31 [2024-11-10 15:00:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:49,391 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-10 15:00:49,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2024-11-10 15:00:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-10 15:00:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-10 15:00:49,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:49,392 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:49,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-10 15:00:49,392 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:49,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash 105169278, now seen corresponding path program 1 times [2024-11-10 15:00:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357589950] [2024-11-10 15:00:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:49,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357589950] [2024-11-10 15:00:49,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357589950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:49,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275840186] [2024-11-10 15:00:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:49,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:49,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:49,606 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) [2024-11-10 15:00:49,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:00:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:49,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:00:49,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:49,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:49,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:00:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:49,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275840186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:49,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:49,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-10 15:00:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694281541] [2024-11-10 15:00:49,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:49,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:00:49,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:00:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:00:49,889 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 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) [2024-11-10 15:00:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:50,037 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2024-11-10 15:00:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:00:50,038 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 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) Word has length 35 [2024-11-10 15:00:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:50,038 INFO L225 Difference]: With dead ends: 52 [2024-11-10 15:00:50,038 INFO L226 Difference]: Without dead ends: 52 [2024-11-10 15:00:50,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-10 15:00:50,039 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:50,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 294 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-10 15:00:50,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-11-10 15:00:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 49 states have internal predecessors, (52), 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) [2024-11-10 15:00:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-11-10 15:00:50,040 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 35 [2024-11-10 15:00:50,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:50,040 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-11-10 15:00:50,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 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) [2024-11-10 15:00:50,040 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-11-10 15:00:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-10 15:00:50,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:50,041 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:50,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 15:00:50,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-10 15:00:50,241 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:50,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2011539921, now seen corresponding path program 1 times [2024-11-10 15:00:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172021711] [2024-11-10 15:00:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:50,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172021711] [2024-11-10 15:00:50,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172021711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038318489] [2024-11-10 15:00:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:50,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:50,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:50,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:50,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:00:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:50,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:00:50,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:50,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:50,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:00:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:50,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038318489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:50,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:50,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-10 15:00:50,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829427236] [2024-11-10 15:00:50,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:50,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 15:00:50,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:50,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 15:00:50,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:00:50,731 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 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) [2024-11-10 15:00:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:50,859 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2024-11-10 15:00:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:00:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 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) Word has length 37 [2024-11-10 15:00:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:50,860 INFO L225 Difference]: With dead ends: 54 [2024-11-10 15:00:50,860 INFO L226 Difference]: Without dead ends: 54 [2024-11-10 15:00:50,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:00:50,860 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:50,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 241 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-10 15:00:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2024-11-10 15:00:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 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) [2024-11-10 15:00:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2024-11-10 15:00:50,861 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 37 [2024-11-10 15:00:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:50,861 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2024-11-10 15:00:50,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 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) [2024-11-10 15:00:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2024-11-10 15:00:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-10 15:00:50,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:50,862 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:50,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:00:51,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 15:00:51,063 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:51,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash -354632008, now seen corresponding path program 1 times [2024-11-10 15:00:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:51,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340696558] [2024-11-10 15:00:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:51,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:51,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340696558] [2024-11-10 15:00:51,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340696558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:51,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929751354] [2024-11-10 15:00:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:51,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:51,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:51,293 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:51,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:00:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:51,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 15:00:51,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:51,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:51,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:00:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:51,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929751354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:51,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:51,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2024-11-10 15:00:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017761986] [2024-11-10 15:00:51,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:51,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 15:00:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 15:00:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-10 15:00:51,637 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 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) [2024-11-10 15:00:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:51,806 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2024-11-10 15:00:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:00:51,807 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 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) Word has length 39 [2024-11-10 15:00:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:51,807 INFO L225 Difference]: With dead ends: 62 [2024-11-10 15:00:51,807 INFO L226 Difference]: Without dead ends: 59 [2024-11-10 15:00:51,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-10 15:00:51,808 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:51,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 313 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-10 15:00:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2024-11-10 15:00:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 states have internal predecessors, (52), 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) [2024-11-10 15:00:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-11-10 15:00:51,809 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 39 [2024-11-10 15:00:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:51,809 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-11-10 15:00:51,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 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) [2024-11-10 15:00:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-11-10 15:00:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-10 15:00:51,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:51,809 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:51,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 15:00:52,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:52,010 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:52,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:52,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1451229400, now seen corresponding path program 1 times [2024-11-10 15:00:52,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:52,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888144971] [2024-11-10 15:00:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:52,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888144971] [2024-11-10 15:00:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888144971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129232916] [2024-11-10 15:00:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:52,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:52,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:52,273 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:52,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 15:00:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:52,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 15:00:52,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:52,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:00:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:52,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:52,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:00:52,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:00:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129232916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:52,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:52,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 21 [2024-11-10 15:00:52,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157959119] [2024-11-10 15:00:52,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:52,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:00:52,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:52,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:00:52,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:00:52,527 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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) [2024-11-10 15:00:52,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:52,615 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2024-11-10 15:00:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:00:52,615 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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) Word has length 41 [2024-11-10 15:00:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:52,616 INFO L225 Difference]: With dead ends: 83 [2024-11-10 15:00:52,616 INFO L226 Difference]: Without dead ends: 56 [2024-11-10 15:00:52,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:00:52,616 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:52,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 301 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-10 15:00:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-10 15:00:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 53 states have internal predecessors, (56), 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) [2024-11-10 15:00:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-10 15:00:52,618 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 41 [2024-11-10 15:00:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:52,618 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-10 15:00:52,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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) [2024-11-10 15:00:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-10 15:00:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 15:00:52,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:52,619 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:52,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 15:00:52,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-10 15:00:52,823 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:52,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 748892166, now seen corresponding path program 2 times [2024-11-10 15:00:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:52,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213986567] [2024-11-10 15:00:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:52,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213986567] [2024-11-10 15:00:52,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213986567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:52,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264943136] [2024-11-10 15:00:52,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:00:52,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:52,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:52,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:52,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 15:00:53,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:00:53,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:53,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 15:00:53,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:53,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:53,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:00:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:00:53,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264943136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:53,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:53,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-10 15:00:53,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924672281] [2024-11-10 15:00:53,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:53,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:00:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:00:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:00:53,358 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 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) [2024-11-10 15:00:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:53,535 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2024-11-10 15:00:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:00:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 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) Word has length 45 [2024-11-10 15:00:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:53,536 INFO L225 Difference]: With dead ends: 64 [2024-11-10 15:00:53,536 INFO L226 Difference]: Without dead ends: 64 [2024-11-10 15:00:53,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-10 15:00:53,536 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:53,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 361 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-10 15:00:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-10 15:00:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 58 states have internal predecessors, (61), 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) [2024-11-10 15:00:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-11-10 15:00:53,538 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 45 [2024-11-10 15:00:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:53,538 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-11-10 15:00:53,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 21 states have internal predecessors, (94), 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) [2024-11-10 15:00:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-11-10 15:00:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 15:00:53,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:53,538 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:53,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 15:00:53,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:53,744 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:53,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1869135037, now seen corresponding path program 2 times [2024-11-10 15:00:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:53,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225931533] [2024-11-10 15:00:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:53,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:54,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225931533] [2024-11-10 15:00:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225931533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890094849] [2024-11-10 15:00:54,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:00:54,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:54,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:54,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 15:00:54,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:00:54,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:54,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-10 15:00:54,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:54,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:00:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:54,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:54,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-10 15:00:54,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:00:54,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:00:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890094849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:54,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:54,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 27 [2024-11-10 15:00:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978088072] [2024-11-10 15:00:54,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:54,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 15:00:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 15:00:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:00:54,380 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 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) [2024-11-10 15:00:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:54,547 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-11-10 15:00:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 15:00:54,547 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 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) Word has length 47 [2024-11-10 15:00:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:54,548 INFO L225 Difference]: With dead ends: 85 [2024-11-10 15:00:54,548 INFO L226 Difference]: Without dead ends: 65 [2024-11-10 15:00:54,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2024-11-10 15:00:54,549 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:54,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 476 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-10 15:00:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-11-10 15:00:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 62 states have internal predecessors, (65), 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) [2024-11-10 15:00:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-10 15:00:54,550 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 47 [2024-11-10 15:00:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:54,550 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-10 15:00:54,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 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) [2024-11-10 15:00:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-10 15:00:54,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 15:00:54,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:54,551 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:54,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 15:00:54,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-10 15:00:54,751 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:54,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash 618777189, now seen corresponding path program 3 times [2024-11-10 15:00:54,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:54,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333171907] [2024-11-10 15:00:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:54,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333171907] [2024-11-10 15:00:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333171907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:54,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346987461] [2024-11-10 15:00:54,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:00:54,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:54,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:54,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:54,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 15:00:55,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 15:00:55,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:55,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 15:00:55,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:55,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:55,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-10 15:00:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:55,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346987461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:55,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:55,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-11-10 15:00:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919726388] [2024-11-10 15:00:55,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:55,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 15:00:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:55,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 15:00:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:00:55,397 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 27 states, 26 states have (on average 4.269230769230769) internal successors, (111), 27 states have internal predecessors, (111), 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) [2024-11-10 15:00:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:55,600 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2024-11-10 15:00:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:00:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.269230769230769) internal successors, (111), 27 states have internal predecessors, (111), 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) Word has length 51 [2024-11-10 15:00:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:55,602 INFO L225 Difference]: With dead ends: 65 [2024-11-10 15:00:55,602 INFO L226 Difference]: Without dead ends: 65 [2024-11-10 15:00:55,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2024-11-10 15:00:55,603 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:55,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 397 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:00:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-10 15:00:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-10 15:00:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 64 states have internal predecessors, (67), 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) [2024-11-10 15:00:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2024-11-10 15:00:55,604 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 51 [2024-11-10 15:00:55,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:55,604 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2024-11-10 15:00:55,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.269230769230769) internal successors, (111), 27 states have internal predecessors, (111), 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) [2024-11-10 15:00:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2024-11-10 15:00:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-10 15:00:55,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:55,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:55,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 15:00:55,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-10 15:00:55,805 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:55,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -261293025, now seen corresponding path program 2 times [2024-11-10 15:00:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:55,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834149413] [2024-11-10 15:00:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:55,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:56,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834149413] [2024-11-10 15:00:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834149413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:56,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715510793] [2024-11-10 15:00:56,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:00:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:56,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:56,084 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:56,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 15:00:56,161 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:00:56,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:56,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 15:00:56,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 15:00:56,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:00:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715510793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:00:56,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:00:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-11-10 15:00:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030308272] [2024-11-10 15:00:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:00:56,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:00:56,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:56,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:00:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:00:56,215 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-10 15:00:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:56,240 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2024-11-10 15:00:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:00:56,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) Word has length 55 [2024-11-10 15:00:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:56,241 INFO L225 Difference]: With dead ends: 64 [2024-11-10 15:00:56,241 INFO L226 Difference]: Without dead ends: 61 [2024-11-10 15:00:56,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:00:56,242 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:56,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 92 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:00:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-10 15:00:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-10 15:00:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 60 states have internal predecessors, (63), 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) [2024-11-10 15:00:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2024-11-10 15:00:56,243 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 55 [2024-11-10 15:00:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:56,244 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2024-11-10 15:00:56,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-10 15:00:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2024-11-10 15:00:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-10 15:00:56,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:56,244 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:56,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 15:00:56,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-10 15:00:56,448 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:56,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1946779953, now seen corresponding path program 3 times [2024-11-10 15:00:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672973570] [2024-11-10 15:00:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:56,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:56,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672973570] [2024-11-10 15:00:56,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672973570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392597557] [2024-11-10 15:00:56,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:00:56,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:56,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:56,725 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:56,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 15:00:56,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 15:00:56,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:56,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-10 15:00:56,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:56,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:00:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:57,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:57,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-10 15:00:57,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:00:57,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:00:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:00:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392597557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:57,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:57,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 16] total 42 [2024-11-10 15:00:57,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420978372] [2024-11-10 15:00:57,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:57,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-10 15:00:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-10 15:00:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1598, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 15:00:57,451 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 42 states have internal predecessors, (139), 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) [2024-11-10 15:00:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:58,052 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2024-11-10 15:00:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-10 15:00:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 42 states have internal predecessors, (139), 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) Word has length 57 [2024-11-10 15:00:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:58,053 INFO L225 Difference]: With dead ends: 171 [2024-11-10 15:00:58,053 INFO L226 Difference]: Without dead ends: 73 [2024-11-10 15:00:58,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=279, Invalid=3627, Unknown=0, NotChecked=0, Total=3906 [2024-11-10 15:00:58,054 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:58,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 537 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:00:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-10 15:00:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-11-10 15:00:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 68 states have internal predecessors, (71), 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) [2024-11-10 15:00:58,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-10 15:00:58,056 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 57 [2024-11-10 15:00:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:58,056 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-10 15:00:58,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 42 states have internal predecessors, (139), 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) [2024-11-10 15:00:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-10 15:00:58,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-10 15:00:58,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:58,056 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:58,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 15:00:58,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-10 15:00:58,261 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:58,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1521752399, now seen corresponding path program 4 times [2024-11-10 15:00:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024560666] [2024-11-10 15:00:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:00:58,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024560666] [2024-11-10 15:00:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024560666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674828396] [2024-11-10 15:00:58,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:00:58,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:58,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:58,492 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:58,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 15:00:58,605 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:00:58,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:58,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 15:00:58,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:00:58,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:58,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-10 15:00:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:00:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674828396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:59,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:59,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-11-10 15:00:59,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778941141] [2024-11-10 15:00:59,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:59,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 15:00:59,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 15:00:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:00:59,043 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 27 states have internal predecessors, (140), 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) [2024-11-10 15:00:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:59,158 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-11-10 15:00:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:00:59,159 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 27 states have internal predecessors, (140), 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) Word has length 65 [2024-11-10 15:00:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:59,159 INFO L225 Difference]: With dead ends: 79 [2024-11-10 15:00:59,159 INFO L226 Difference]: Without dead ends: 79 [2024-11-10 15:00:59,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-10 15:00:59,160 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 15 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:59,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 282 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:00:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-10 15:00:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2024-11-10 15:00:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 74 states have internal predecessors, (77), 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) [2024-11-10 15:00:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-11-10 15:00:59,161 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 65 [2024-11-10 15:00:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:59,161 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-11-10 15:00:59,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 27 states have internal predecessors, (140), 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) [2024-11-10 15:00:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-11-10 15:00:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-10 15:00:59,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:59,162 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:59,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 15:00:59,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:59,366 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:00:59,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2115173964, now seen corresponding path program 4 times [2024-11-10 15:00:59,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:59,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933795195] [2024-11-10 15:00:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:59,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:00:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933795195] [2024-11-10 15:00:59,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933795195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152717918] [2024-11-10 15:00:59,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:00:59,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:59,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:59,684 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:00:59,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 15:00:59,793 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:00:59,793 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:59,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-10 15:00:59,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:59,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:00:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:00:59,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:01:00,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152717918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:00,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:00,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-10 15:01:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921205835] [2024-11-10 15:01:00,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:00,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 15:01:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:00,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 15:01:00,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2024-11-10 15:01:00,290 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 32 states, 31 states have (on average 4.580645161290323) internal successors, (142), 32 states have internal predecessors, (142), 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) [2024-11-10 15:01:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:00,508 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-11-10 15:01:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 15:01:00,508 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.580645161290323) internal successors, (142), 32 states have internal predecessors, (142), 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) Word has length 67 [2024-11-10 15:01:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:00,509 INFO L225 Difference]: With dead ends: 77 [2024-11-10 15:01:00,509 INFO L226 Difference]: Without dead ends: 77 [2024-11-10 15:01:00,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 15:01:00,510 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:00,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 392 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:01:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-10 15:01:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-10 15:01:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 76 states have internal predecessors, (79), 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) [2024-11-10 15:01:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-11-10 15:01:00,511 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 67 [2024-11-10 15:01:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:00,511 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-11-10 15:01:00,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.580645161290323) internal successors, (142), 32 states have internal predecessors, (142), 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) [2024-11-10 15:01:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-11-10 15:01:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-10 15:01:00,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:00,512 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:00,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 15:01:00,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-10 15:01:00,715 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:00,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash 368372086, now seen corresponding path program 5 times [2024-11-10 15:01:00,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:00,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333260927] [2024-11-10 15:01:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:01:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:01,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333260927] [2024-11-10 15:01:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333260927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931923236] [2024-11-10 15:01:01,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:01:01,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:01,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:01,069 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:01,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 15:01:01,187 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-10 15:01:01,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:01,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-10 15:01:01,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:01,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 15:01:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:01:01,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:01,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:01:01,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:01:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:01:01,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931923236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:01,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:01,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2024-11-10 15:01:01,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152442703] [2024-11-10 15:01:01,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:01,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 15:01:01,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 15:01:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2024-11-10 15:01:01,596 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 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) [2024-11-10 15:01:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:01,786 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2024-11-10 15:01:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 15:01:01,787 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 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) Word has length 73 [2024-11-10 15:01:01,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:01,787 INFO L225 Difference]: With dead ends: 134 [2024-11-10 15:01:01,787 INFO L226 Difference]: Without dead ends: 83 [2024-11-10 15:01:01,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2024-11-10 15:01:01,788 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:01,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 701 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:01:01,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-10 15:01:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-10 15:01:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 80 states have internal predecessors, (83), 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) [2024-11-10 15:01:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-11-10 15:01:01,789 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 73 [2024-11-10 15:01:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:01,789 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-11-10 15:01:01,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 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) [2024-11-10 15:01:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-11-10 15:01:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-10 15:01:01,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:01,789 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:01,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:01,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-10 15:01:01,990 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:01,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash -512941484, now seen corresponding path program 6 times [2024-11-10 15:01:01,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:01,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865805409] [2024-11-10 15:01:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 80 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:01:02,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865805409] [2024-11-10 15:01:02,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865805409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677894169] [2024-11-10 15:01:02,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 15:01:02,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:02,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:02,307 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:02,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 15:01:02,508 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-10 15:01:02,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:02,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-10 15:01:02,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 70 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:01:02,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:02,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-10 15:01:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 70 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:01:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677894169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:02,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2024-11-10 15:01:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773456377] [2024-11-10 15:01:02,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:02,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 15:01:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 15:01:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 15:01:02,977 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 33 states, 32 states have (on average 5.3125) internal successors, (170), 33 states have internal predecessors, (170), 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) [2024-11-10 15:01:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:03,207 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2024-11-10 15:01:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 15:01:03,208 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.3125) internal successors, (170), 33 states have internal predecessors, (170), 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) Word has length 77 [2024-11-10 15:01:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:03,209 INFO L225 Difference]: With dead ends: 91 [2024-11-10 15:01:03,209 INFO L226 Difference]: Without dead ends: 91 [2024-11-10 15:01:03,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 15:01:03,209 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:03,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 454 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:01:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-10 15:01:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-10 15:01:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 86 states have internal predecessors, (89), 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) [2024-11-10 15:01:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-11-10 15:01:03,211 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 77 [2024-11-10 15:01:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:03,211 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-11-10 15:01:03,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.3125) internal successors, (170), 33 states have internal predecessors, (170), 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) [2024-11-10 15:01:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-11-10 15:01:03,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-10 15:01:03,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:03,211 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:03,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 15:01:03,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-10 15:01:03,416 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:03,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash 984472081, now seen corresponding path program 5 times [2024-11-10 15:01:03,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:03,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576767736] [2024-11-10 15:01:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:03,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 19 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:01:04,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576767736] [2024-11-10 15:01:04,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576767736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210714286] [2024-11-10 15:01:04,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:01:04,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:04,012 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:04,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 15:01:04,129 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-10 15:01:04,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:04,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-10 15:01:04,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:04,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:01:04,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-10 15:01:04,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:01:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 19 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:01:04,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:05,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-10 15:01:05,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-10 15:01:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 19 proven. 63 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:01:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210714286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:05,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:05,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 22] total 67 [2024-11-10 15:01:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829455528] [2024-11-10 15:01:05,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:05,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-10 15:01:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-10 15:01:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4182, Unknown=0, NotChecked=0, Total=4422 [2024-11-10 15:01:05,531 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 67 states, 67 states have (on average 3.029850746268657) internal successors, (203), 67 states have internal predecessors, (203), 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) [2024-11-10 15:01:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:06,371 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2024-11-10 15:01:06,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 15:01:06,371 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.029850746268657) internal successors, (203), 67 states have internal predecessors, (203), 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) Word has length 79 [2024-11-10 15:01:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:06,371 INFO L225 Difference]: With dead ends: 131 [2024-11-10 15:01:06,371 INFO L226 Difference]: Without dead ends: 95 [2024-11-10 15:01:06,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1772 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=362, Invalid=5958, Unknown=0, NotChecked=0, Total=6320 [2024-11-10 15:01:06,373 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:06,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1012 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 15:01:06,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-10 15:01:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2024-11-10 15:01:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 90 states have internal predecessors, (93), 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) [2024-11-10 15:01:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2024-11-10 15:01:06,374 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 79 [2024-11-10 15:01:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:06,375 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2024-11-10 15:01:06,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.029850746268657) internal successors, (203), 67 states have internal predecessors, (203), 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) [2024-11-10 15:01:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2024-11-10 15:01:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-10 15:01:06,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:06,375 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:06,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-10 15:01:06,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:06,580 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:06,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash 986078515, now seen corresponding path program 6 times [2024-11-10 15:01:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:06,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725010532] [2024-11-10 15:01:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:06,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 8 proven. 88 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:01:06,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:06,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725010532] [2024-11-10 15:01:06,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725010532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:06,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407825037] [2024-11-10 15:01:06,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 15:01:06,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:06,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:06,940 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:06,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 15:01:07,169 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-10 15:01:07,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:07,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-10 15:01:07,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:07,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 15:01:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 18 proven. 78 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:01:07,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 18 proven. 78 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:01:07,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407825037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:07,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:07,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 41 [2024-11-10 15:01:07,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749244575] [2024-11-10 15:01:07,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:07,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-10 15:01:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-10 15:01:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1512, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 15:01:07,710 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 42 states, 41 states have (on average 4.780487804878049) internal successors, (196), 42 states have internal predecessors, (196), 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) [2024-11-10 15:01:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:08,076 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-10 15:01:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:01:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 4.780487804878049) internal successors, (196), 42 states have internal predecessors, (196), 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) Word has length 83 [2024-11-10 15:01:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:08,077 INFO L225 Difference]: With dead ends: 93 [2024-11-10 15:01:08,077 INFO L226 Difference]: Without dead ends: 93 [2024-11-10 15:01:08,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 15:01:08,078 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:08,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 499 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:01:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-10 15:01:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-10 15:01:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.043956043956044) internal successors, (95), 92 states have internal predecessors, (95), 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) [2024-11-10 15:01:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-11-10 15:01:08,079 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 83 [2024-11-10 15:01:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:08,079 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-11-10 15:01:08,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 4.780487804878049) internal successors, (196), 42 states have internal predecessors, (196), 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) [2024-11-10 15:01:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-11-10 15:01:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 15:01:08,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:08,081 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:08,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:08,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:08,281 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:08,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2048311523, now seen corresponding path program 7 times [2024-11-10 15:01:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486635550] [2024-11-10 15:01:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 108 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:01:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486635550] [2024-11-10 15:01:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486635550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687598707] [2024-11-10 15:01:08,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 15:01:08,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:08,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:08,676 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:08,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 15:01:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:08,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-10 15:01:08,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:08,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:01:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 108 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:01:09,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:09,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-10 15:01:09,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:01:09,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:01:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 108 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 15:01:09,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687598707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:09,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:09,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 39 [2024-11-10 15:01:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43086209] [2024-11-10 15:01:09,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:09,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-10 15:01:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-10 15:01:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1390, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 15:01:09,259 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 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) [2024-11-10 15:01:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:10,159 INFO L93 Difference]: Finished difference Result 258 states and 263 transitions. [2024-11-10 15:01:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-10 15:01:10,159 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 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) Word has length 89 [2024-11-10 15:01:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:10,160 INFO L225 Difference]: With dead ends: 258 [2024-11-10 15:01:10,160 INFO L226 Difference]: Without dead ends: 105 [2024-11-10 15:01:10,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=4437, Unknown=0, NotChecked=0, Total=4692 [2024-11-10 15:01:10,161 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:10,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 928 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:01:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-10 15:01:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2024-11-10 15:01:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 100 states have internal predecessors, (103), 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) [2024-11-10 15:01:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2024-11-10 15:01:10,163 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 89 [2024-11-10 15:01:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:10,163 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2024-11-10 15:01:10,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 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) [2024-11-10 15:01:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2024-11-10 15:01:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 15:01:10,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:10,163 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:10,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 15:01:10,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-10 15:01:10,364 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:10,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash -676668003, now seen corresponding path program 8 times [2024-11-10 15:01:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:10,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159643650] [2024-11-10 15:01:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 18 proven. 122 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:10,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:10,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159643650] [2024-11-10 15:01:10,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159643650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:10,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780119395] [2024-11-10 15:01:10,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:01:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:10,714 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:10,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 15:01:10,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:01:10,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:10,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-10 15:01:10,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 32 proven. 108 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:11,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:11,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:01:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 32 proven. 108 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:11,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780119395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:11,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2024-11-10 15:01:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425501370] [2024-11-10 15:01:11,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:11,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 15:01:11,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 15:01:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 15:01:11,421 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 33 states, 32 states have (on average 5.1875) internal successors, (166), 33 states have internal predecessors, (166), 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) [2024-11-10 15:01:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:11,681 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2024-11-10 15:01:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 15:01:11,682 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.1875) internal successors, (166), 33 states have internal predecessors, (166), 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) Word has length 97 [2024-11-10 15:01:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:11,682 INFO L225 Difference]: With dead ends: 111 [2024-11-10 15:01:11,682 INFO L226 Difference]: Without dead ends: 111 [2024-11-10 15:01:11,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 170 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 15:01:11,683 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:11,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 635 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:01:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-10 15:01:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2024-11-10 15:01:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 106 states have internal predecessors, (109), 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) [2024-11-10 15:01:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2024-11-10 15:01:11,684 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 97 [2024-11-10 15:01:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:11,684 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2024-11-10 15:01:11,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.1875) internal successors, (166), 33 states have internal predecessors, (166), 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) [2024-11-10 15:01:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2024-11-10 15:01:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-10 15:01:11,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:11,685 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:11,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:11,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-10 15:01:11,886 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:11,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1737890022, now seen corresponding path program 7 times [2024-11-10 15:01:11,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:11,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494142737] [2024-11-10 15:01:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:11,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 18 proven. 132 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494142737] [2024-11-10 15:01:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494142737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634179238] [2024-11-10 15:01:12,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 15:01:12,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:12,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:12,338 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:12,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 15:01:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:12,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-10 15:01:12,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 32 proven. 118 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:12,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:12,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:01:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 32 proven. 118 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:12,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634179238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:12,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:12,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 35 [2024-11-10 15:01:12,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577672022] [2024-11-10 15:01:12,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:12,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 15:01:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 15:01:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 15:01:12,986 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 36 states, 35 states have (on average 4.771428571428571) internal successors, (167), 36 states have internal predecessors, (167), 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) [2024-11-10 15:01:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:13,299 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-11-10 15:01:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:01:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.771428571428571) internal successors, (167), 36 states have internal predecessors, (167), 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) Word has length 99 [2024-11-10 15:01:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:13,300 INFO L225 Difference]: With dead ends: 109 [2024-11-10 15:01:13,300 INFO L226 Difference]: Without dead ends: 109 [2024-11-10 15:01:13,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 173 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 15:01:13,301 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:13,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 638 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:01:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-10 15:01:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-10 15:01:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 108 states have internal predecessors, (111), 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) [2024-11-10 15:01:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2024-11-10 15:01:13,302 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 99 [2024-11-10 15:01:13,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:13,302 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2024-11-10 15:01:13,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.771428571428571) internal successors, (167), 36 states have internal predecessors, (167), 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) [2024-11-10 15:01:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2024-11-10 15:01:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-10 15:01:13,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:13,303 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:13,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:13,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:13,507 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:13,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash -826179644, now seen corresponding path program 9 times [2024-11-10 15:01:13,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:13,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750047064] [2024-11-10 15:01:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:13,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 17 proven. 165 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:13,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750047064] [2024-11-10 15:01:13,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750047064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760964760] [2024-11-10 15:01:13,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:01:13,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:13,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:13,990 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:13,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 15:01:14,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-10 15:01:14,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:14,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-10 15:01:14,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:14,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:01:14,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:01:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 17 proven. 165 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:14,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:15,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-10 15:01:15,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-10 15:01:15,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-10 15:01:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 17 proven. 165 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 15:01:15,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760964760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:15,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:15,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 28] total 69 [2024-11-10 15:01:15,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966341958] [2024-11-10 15:01:15,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:15,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-10 15:01:15,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-10 15:01:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=4472, Unknown=0, NotChecked=0, Total=4692 [2024-11-10 15:01:15,705 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand has 69 states, 69 states have (on average 3.579710144927536) internal successors, (247), 69 states have internal predecessors, (247), 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) [2024-11-10 15:01:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:17,482 INFO L93 Difference]: Finished difference Result 303 states and 308 transitions. [2024-11-10 15:01:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-10 15:01:17,483 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.579710144927536) internal successors, (247), 69 states have internal predecessors, (247), 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) Word has length 105 [2024-11-10 15:01:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:17,483 INFO L225 Difference]: With dead ends: 303 [2024-11-10 15:01:17,483 INFO L226 Difference]: Without dead ends: 121 [2024-11-10 15:01:17,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=504, Invalid=10416, Unknown=0, NotChecked=0, Total=10920 [2024-11-10 15:01:17,485 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 29 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:17,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1631 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3299 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 15:01:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-10 15:01:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2024-11-10 15:01:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 116 states have internal predecessors, (119), 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) [2024-11-10 15:01:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2024-11-10 15:01:17,487 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 105 [2024-11-10 15:01:17,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:17,487 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2024-11-10 15:01:17,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.579710144927536) internal successors, (247), 69 states have internal predecessors, (247), 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) [2024-11-10 15:01:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2024-11-10 15:01:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-10 15:01:17,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:17,488 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:17,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:17,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:17,689 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:17,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 588423236, now seen corresponding path program 10 times [2024-11-10 15:01:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:17,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104249582] [2024-11-10 15:01:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 32 proven. 172 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:18,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104249582] [2024-11-10 15:01:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104249582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533627121] [2024-11-10 15:01:18,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:01:18,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:18,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:18,129 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:18,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-10 15:01:18,398 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:01:18,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:18,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-10 15:01:18,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 50 proven. 154 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:18,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:18,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-10 15:01:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 50 proven. 154 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:19,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533627121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:19,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:19,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2024-11-10 15:01:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523846024] [2024-11-10 15:01:19,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:19,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-10 15:01:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-10 15:01:19,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1489, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 15:01:19,141 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 42 states, 41 states have (on average 5.463414634146342) internal successors, (224), 42 states have internal predecessors, (224), 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) [2024-11-10 15:01:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:19,402 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2024-11-10 15:01:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:01:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.463414634146342) internal successors, (224), 42 states have internal predecessors, (224), 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) Word has length 113 [2024-11-10 15:01:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:19,403 INFO L225 Difference]: With dead ends: 127 [2024-11-10 15:01:19,403 INFO L226 Difference]: Without dead ends: 127 [2024-11-10 15:01:19,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2024-11-10 15:01:19,404 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 15 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:19,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 707 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:01:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-10 15:01:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2024-11-10 15:01:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 122 states have internal predecessors, (125), 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) [2024-11-10 15:01:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2024-11-10 15:01:19,405 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 113 [2024-11-10 15:01:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:19,405 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2024-11-10 15:01:19,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.463414634146342) internal successors, (224), 42 states have internal predecessors, (224), 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) [2024-11-10 15:01:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2024-11-10 15:01:19,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-10 15:01:19,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:19,406 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:19,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:19,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-10 15:01:19,610 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:19,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:19,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1460954111, now seen corresponding path program 8 times [2024-11-10 15:01:19,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:19,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560568030] [2024-11-10 15:01:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:19,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 32 proven. 184 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:20,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:20,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560568030] [2024-11-10 15:01:20,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560568030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:20,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244416685] [2024-11-10 15:01:20,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:01:20,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:20,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:20,093 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:20,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-10 15:01:20,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:01:20,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:20,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-10 15:01:20,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 50 proven. 166 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:20,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:20,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:01:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 50 proven. 166 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:20,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244416685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:20,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:20,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 39 [2024-11-10 15:01:20,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498136368] [2024-11-10 15:01:20,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:20,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-10 15:01:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-10 15:01:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2024-11-10 15:01:20,802 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand has 40 states, 39 states have (on average 4.897435897435898) internal successors, (191), 40 states have internal predecessors, (191), 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) [2024-11-10 15:01:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:21,168 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-11-10 15:01:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 15:01:21,169 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.897435897435898) internal successors, (191), 40 states have internal predecessors, (191), 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) Word has length 115 [2024-11-10 15:01:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:21,169 INFO L225 Difference]: With dead ends: 125 [2024-11-10 15:01:21,169 INFO L226 Difference]: Without dead ends: 125 [2024-11-10 15:01:21,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 202 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 15:01:21,170 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 4 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:21,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 850 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:01:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-10 15:01:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-10 15:01:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 123 states have (on average 1.032520325203252) internal successors, (127), 124 states have internal predecessors, (127), 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) [2024-11-10 15:01:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2024-11-10 15:01:21,171 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 115 [2024-11-10 15:01:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:21,172 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2024-11-10 15:01:21,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.897435897435898) internal successors, (191), 40 states have internal predecessors, (191), 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) [2024-11-10 15:01:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2024-11-10 15:01:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-10 15:01:21,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:21,173 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:21,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-10 15:01:21,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-10 15:01:21,373 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:21,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:21,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1475062635, now seen corresponding path program 11 times [2024-11-10 15:01:21,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:21,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051950139] [2024-11-10 15:01:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:21,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 20 proven. 234 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051950139] [2024-11-10 15:01:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051950139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469078187] [2024-11-10 15:01:21,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:01:21,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:21,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:21,967 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:21,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-10 15:01:22,166 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-10 15:01:22,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:22,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-10 15:01:22,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:22,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 15:01:22,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-10 15:01:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 20 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:01:22,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:22,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-10 15:01:22,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:01:22,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:01:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 20 proven. 234 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:22,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469078187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:22,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 22] total 49 [2024-11-10 15:01:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614670318] [2024-11-10 15:01:22,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:22,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-10 15:01:22,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-10 15:01:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2196, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 15:01:22,982 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 49 states, 49 states have (on average 4.571428571428571) internal successors, (224), 49 states have internal predecessors, (224), 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) [2024-11-10 15:01:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:23,572 INFO L93 Difference]: Finished difference Result 220 states and 223 transitions. [2024-11-10 15:01:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-10 15:01:23,572 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.571428571428571) internal successors, (224), 49 states have internal predecessors, (224), 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) Word has length 121 [2024-11-10 15:01:23,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:23,572 INFO L225 Difference]: With dead ends: 220 [2024-11-10 15:01:23,573 INFO L226 Difference]: Without dead ends: 131 [2024-11-10 15:01:23,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=2784, Unknown=0, NotChecked=0, Total=2970 [2024-11-10 15:01:23,573 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:23,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1722 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:01:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-10 15:01:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-11-10 15:01:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.031496062992126) internal successors, (131), 128 states have internal predecessors, (131), 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) [2024-11-10 15:01:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2024-11-10 15:01:23,575 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 121 [2024-11-10 15:01:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:23,575 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2024-11-10 15:01:23,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.571428571428571) internal successors, (224), 49 states have internal predecessors, (224), 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) [2024-11-10 15:01:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2024-11-10 15:01:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-10 15:01:23,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:23,576 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:23,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-10 15:01:23,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-10 15:01:23,776 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:23,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash 107442249, now seen corresponding path program 12 times [2024-11-10 15:01:23,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:23,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904175647] [2024-11-10 15:01:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:23,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 50 proven. 230 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:24,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:24,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904175647] [2024-11-10 15:01:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904175647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:24,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493693371] [2024-11-10 15:01:24,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 15:01:24,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:24,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:24,287 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:24,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-10 15:01:24,749 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-10 15:01:24,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:24,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-10 15:01:24,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 72 proven. 208 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:25,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:25,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-10 15:01:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 72 proven. 208 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 15:01:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493693371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:25,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 47 [2024-11-10 15:01:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296560651] [2024-11-10 15:01:25,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:25,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-10 15:01:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-10 15:01:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1926, Unknown=0, NotChecked=0, Total=2256 [2024-11-10 15:01:25,493 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 48 states, 47 states have (on average 5.659574468085107) internal successors, (266), 48 states have internal predecessors, (266), 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) [2024-11-10 15:01:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:25,858 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2024-11-10 15:01:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 15:01:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.659574468085107) internal successors, (266), 48 states have internal predecessors, (266), 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) Word has length 125 [2024-11-10 15:01:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:25,859 INFO L225 Difference]: With dead ends: 139 [2024-11-10 15:01:25,859 INFO L226 Difference]: Without dead ends: 139 [2024-11-10 15:01:25,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 213 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=2641, Unknown=0, NotChecked=0, Total=3080 [2024-11-10 15:01:25,860 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:25,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 723 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:01:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-10 15:01:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-11-10 15:01:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 133 states have (on average 1.0300751879699248) internal successors, (137), 134 states have internal predecessors, (137), 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) [2024-11-10 15:01:25,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2024-11-10 15:01:25,861 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 125 [2024-11-10 15:01:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:25,862 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2024-11-10 15:01:25,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.659574468085107) internal successors, (266), 48 states have internal predecessors, (266), 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) [2024-11-10 15:01:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2024-11-10 15:01:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-10 15:01:25,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:25,862 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:25,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:26,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-10 15:01:26,063 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:26,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash 172785350, now seen corresponding path program 9 times [2024-11-10 15:01:26,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:26,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145328168] [2024-11-10 15:01:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 34 proven. 332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:01:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145328168] [2024-11-10 15:01:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145328168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894881672] [2024-11-10 15:01:27,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:01:27,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:27,144 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:27,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-10 15:01:27,467 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-10 15:01:27,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:27,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-10 15:01:27,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:27,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 15:01:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 34 proven. 330 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:01:28,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:28,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-10 15:01:28,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:01:28,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:01:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 34 proven. 234 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:28,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894881672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:28,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:28,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 24] total 72 [2024-11-10 15:01:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073675173] [2024-11-10 15:01:28,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:28,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-10 15:01:28,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:28,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-10 15:01:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4858, Unknown=0, NotChecked=0, Total=5112 [2024-11-10 15:01:28,627 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 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) [2024-11-10 15:01:29,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:29,738 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2024-11-10 15:01:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-10 15:01:29,739 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 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) Word has length 127 [2024-11-10 15:01:29,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:29,739 INFO L225 Difference]: With dead ends: 203 [2024-11-10 15:01:29,739 INFO L226 Difference]: Without dead ends: 143 [2024-11-10 15:01:29,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=363, Invalid=6777, Unknown=0, NotChecked=0, Total=7140 [2024-11-10 15:01:29,740 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 20 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:29,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2655 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 15:01:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-10 15:01:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-11-10 15:01:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 138 states have internal predecessors, (141), 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) [2024-11-10 15:01:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2024-11-10 15:01:29,741 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 127 [2024-11-10 15:01:29,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:29,742 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2024-11-10 15:01:29,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 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) [2024-11-10 15:01:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2024-11-10 15:01:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-10 15:01:29,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:29,742 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:29,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:29,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:29,943 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:29,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:29,943 INFO L85 PathProgramCache]: Analyzing trace with hash 314145768, now seen corresponding path program 10 times [2024-11-10 15:01:29,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:29,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182406165] [2024-11-10 15:01:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 50 proven. 244 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:30,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:30,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182406165] [2024-11-10 15:01:30,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182406165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:30,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788886449] [2024-11-10 15:01:30,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:01:30,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:30,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:30,513 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:30,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-10 15:01:30,799 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:01:30,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:30,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-10 15:01:30,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:30,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:01:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 72 proven. 222 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:31,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 72 proven. 222 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:31,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788886449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:31,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:31,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 51 [2024-11-10 15:01:31,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270686095] [2024-11-10 15:01:31,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:31,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-10 15:01:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:31,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-10 15:01:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2024-11-10 15:01:31,752 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand has 52 states, 51 states have (on average 4.980392156862745) internal successors, (254), 52 states have internal predecessors, (254), 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) [2024-11-10 15:01:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:32,204 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-11-10 15:01:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 15:01:32,205 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.980392156862745) internal successors, (254), 52 states have internal predecessors, (254), 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) Word has length 131 [2024-11-10 15:01:32,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:32,205 INFO L225 Difference]: With dead ends: 141 [2024-11-10 15:01:32,205 INFO L226 Difference]: Without dead ends: 141 [2024-11-10 15:01:32,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=460, Invalid=3080, Unknown=0, NotChecked=0, Total=3540 [2024-11-10 15:01:32,206 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:32,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 873 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:01:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-10 15:01:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-10 15:01:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 140 states have internal predecessors, (143), 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) [2024-11-10 15:01:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2024-11-10 15:01:32,208 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 131 [2024-11-10 15:01:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:32,208 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2024-11-10 15:01:32,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.980392156862745) internal successors, (254), 52 states have internal predecessors, (254), 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) [2024-11-10 15:01:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2024-11-10 15:01:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-10 15:01:32,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:32,209 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:32,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:32,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:32,409 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:32,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1118453230, now seen corresponding path program 13 times [2024-11-10 15:01:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137138502] [2024-11-10 15:01:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 23 proven. 315 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137138502] [2024-11-10 15:01:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137138502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113757922] [2024-11-10 15:01:33,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 15:01:33,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:33,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:33,090 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:33,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-10 15:01:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:33,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-10 15:01:33,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:33,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:01:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 23 proven. 315 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:33,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:33,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:01:33,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:01:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 23 proven. 315 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113757922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:33,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:33,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 38 [2024-11-10 15:01:33,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526070855] [2024-11-10 15:01:33,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:33,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-10 15:01:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-10 15:01:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 15:01:33,680 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand has 38 states, 38 states have (on average 4.342105263157895) internal successors, (165), 38 states have internal predecessors, (165), 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) [2024-11-10 15:01:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:34,141 INFO L93 Difference]: Finished difference Result 246 states and 249 transitions. [2024-11-10 15:01:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 15:01:34,142 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.342105263157895) internal successors, (165), 38 states have internal predecessors, (165), 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) Word has length 137 [2024-11-10 15:01:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:34,142 INFO L225 Difference]: With dead ends: 246 [2024-11-10 15:01:34,142 INFO L226 Difference]: Without dead ends: 147 [2024-11-10 15:01:34,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=1840, Unknown=0, NotChecked=0, Total=1980 [2024-11-10 15:01:34,143 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 13 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:34,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1613 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:01:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-10 15:01:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2024-11-10 15:01:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 143 states have (on average 1.027972027972028) internal successors, (147), 144 states have internal predecessors, (147), 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) [2024-11-10 15:01:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2024-11-10 15:01:34,144 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 137 [2024-11-10 15:01:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:34,145 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2024-11-10 15:01:34,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.342105263157895) internal successors, (165), 38 states have internal predecessors, (165), 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) [2024-11-10 15:01:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2024-11-10 15:01:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-10 15:01:34,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:34,145 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:34,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:34,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-10 15:01:34,346 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:34,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:34,346 INFO L85 PathProgramCache]: Analyzing trace with hash 387451632, now seen corresponding path program 14 times [2024-11-10 15:01:34,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:34,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806482957] [2024-11-10 15:01:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:34,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 72 proven. 296 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:34,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:34,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806482957] [2024-11-10 15:01:34,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806482957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:34,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741563658] [2024-11-10 15:01:34,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:01:34,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:34,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:34,922 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:34,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-10 15:01:35,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:01:35,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:35,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-10 15:01:35,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 98 proven. 270 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:35,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:35,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:01:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 98 proven. 270 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-10 15:01:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741563658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:35,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:35,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2024-11-10 15:01:35,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084354601] [2024-11-10 15:01:35,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:35,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-10 15:01:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:35,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-10 15:01:35,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1743, Unknown=0, NotChecked=0, Total=1980 [2024-11-10 15:01:35,863 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand has 45 states, 44 states have (on average 5.409090909090909) internal successors, (238), 45 states have internal predecessors, (238), 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) [2024-11-10 15:01:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:36,280 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2024-11-10 15:01:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 15:01:36,280 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 5.409090909090909) internal successors, (238), 45 states have internal predecessors, (238), 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) Word has length 141 [2024-11-10 15:01:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:36,281 INFO L225 Difference]: With dead ends: 155 [2024-11-10 15:01:36,281 INFO L226 Difference]: Without dead ends: 155 [2024-11-10 15:01:36,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 249 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=1892, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 15:01:36,281 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 13 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:36,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1063 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:01:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-10 15:01:36,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-11-10 15:01:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 150 states have internal predecessors, (153), 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) [2024-11-10 15:01:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2024-11-10 15:01:36,283 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 141 [2024-11-10 15:01:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:36,284 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2024-11-10 15:01:36,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 5.409090909090909) internal successors, (238), 45 states have internal predecessors, (238), 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) [2024-11-10 15:01:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2024-11-10 15:01:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-10 15:01:36,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:36,284 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:36,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:36,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:36,485 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:36,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1321137235, now seen corresponding path program 11 times [2024-11-10 15:01:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648015713] [2024-11-10 15:01:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 39 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:01:37,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:37,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648015713] [2024-11-10 15:01:37,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648015713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:37,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646226176] [2024-11-10 15:01:37,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:01:37,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:37,629 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:37,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-10 15:01:38,072 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-10 15:01:38,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:38,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-11-10 15:01:38,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:38,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:01:38,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-10 15:01:38,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:01:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 39 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:01:39,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:40,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-10 15:01:40,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-10 15:01:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 39 proven. 315 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-10 15:01:41,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646226176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:41,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:41,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 44, 34] total 107 [2024-11-10 15:01:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104957759] [2024-11-10 15:01:41,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:41,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-10 15:01:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-10 15:01:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=10967, Unknown=0, NotChecked=0, Total=11342 [2024-11-10 15:01:41,216 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand has 107 states, 107 states have (on average 3.542056074766355) internal successors, (379), 107 states have internal predecessors, (379), 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) [2024-11-10 15:01:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:43,622 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2024-11-10 15:01:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-10 15:01:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.542056074766355) internal successors, (379), 107 states have internal predecessors, (379), 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) Word has length 143 [2024-11-10 15:01:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:43,623 INFO L225 Difference]: With dead ends: 227 [2024-11-10 15:01:43,623 INFO L226 Difference]: Without dead ends: 159 [2024-11-10 15:01:43,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4458 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=587, Invalid=15925, Unknown=0, NotChecked=0, Total=16512 [2024-11-10 15:01:43,624 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 39 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 5610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:43,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3065 Invalid, 5610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 5596 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-10 15:01:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-10 15:01:43,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2024-11-10 15:01:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.026143790849673) internal successors, (157), 154 states have internal predecessors, (157), 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) [2024-11-10 15:01:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2024-11-10 15:01:43,626 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 143 [2024-11-10 15:01:43,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:43,626 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2024-11-10 15:01:43,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.542056074766355) internal successors, (379), 107 states have internal predecessors, (379), 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) [2024-11-10 15:01:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2024-11-10 15:01:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-10 15:01:43,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:43,627 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:43,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:43,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:43,827 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:43,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash -792623409, now seen corresponding path program 12 times [2024-11-10 15:01:43,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:43,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550145401] [2024-11-10 15:01:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:43,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 72 proven. 312 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-10 15:01:44,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550145401] [2024-11-10 15:01:44,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550145401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063732674] [2024-11-10 15:01:44,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 15:01:44,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:44,591 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:44,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-10 15:01:45,489 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-10 15:01:45,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:45,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-10 15:01:45,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 98 proven. 286 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-10 15:01:45,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:46,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-10 15:01:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 98 proven. 286 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-10 15:01:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063732674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:46,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:46,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 56 [2024-11-10 15:01:46,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123006311] [2024-11-10 15:01:46,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:46,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-10 15:01:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-10 15:01:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2768, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 15:01:46,469 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand has 57 states, 56 states have (on average 5.410714285714286) internal successors, (303), 57 states have internal predecessors, (303), 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) [2024-11-10 15:01:46,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:46,935 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-11-10 15:01:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 15:01:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.410714285714286) internal successors, (303), 57 states have internal predecessors, (303), 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) Word has length 147 [2024-11-10 15:01:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:46,936 INFO L225 Difference]: With dead ends: 157 [2024-11-10 15:01:46,936 INFO L226 Difference]: Without dead ends: 157 [2024-11-10 15:01:46,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 251 SyntacticMatches, 9 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=572, Invalid=3718, Unknown=0, NotChecked=0, Total=4290 [2024-11-10 15:01:46,936 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 4 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:46,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 791 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:01:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-10 15:01:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-10 15:01:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 156 states have internal predecessors, (159), 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) [2024-11-10 15:01:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2024-11-10 15:01:46,938 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 147 [2024-11-10 15:01:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:46,938 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2024-11-10 15:01:46,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.410714285714286) internal successors, (303), 57 states have internal predecessors, (303), 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) [2024-11-10 15:01:46,939 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2024-11-10 15:01:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-10 15:01:46,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:46,939 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:46,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-10 15:01:47,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-10 15:01:47,140 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:47,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1888631879, now seen corresponding path program 15 times [2024-11-10 15:01:47,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:47,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097578920] [2024-11-10 15:01:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:47,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 26 proven. 408 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-10 15:01:47,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097578920] [2024-11-10 15:01:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097578920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475899816] [2024-11-10 15:01:47,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:01:47,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:47,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:47,959 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:47,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-10 15:01:48,431 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-10 15:01:48,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:48,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 214 conjuncts are in the unsatisfiable core [2024-11-10 15:01:48,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:49,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 15:01:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 26 proven. 536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:01:49,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:50,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-10 15:01:50,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:01:50,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:01:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 26 proven. 408 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-10 15:01:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475899816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:50,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:50,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 47, 28] total 94 [2024-11-10 15:01:50,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999634444] [2024-11-10 15:01:50,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:50,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-10 15:01:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-10 15:01:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=8473, Unknown=0, NotChecked=0, Total=8742 [2024-11-10 15:01:50,935 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand has 94 states, 94 states have (on average 4.085106382978723) internal successors, (384), 94 states have internal predecessors, (384), 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) [2024-11-10 15:01:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:54,259 INFO L93 Difference]: Finished difference Result 435 states and 440 transitions. [2024-11-10 15:01:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-10 15:01:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.085106382978723) internal successors, (384), 94 states have internal predecessors, (384), 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) Word has length 153 [2024-11-10 15:01:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:54,260 INFO L225 Difference]: With dead ends: 435 [2024-11-10 15:01:54,260 INFO L226 Difference]: Without dead ends: 169 [2024-11-10 15:01:54,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4001 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=651, Invalid=20519, Unknown=0, NotChecked=0, Total=21170 [2024-11-10 15:01:54,261 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 7092 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 7108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:54,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3477 Invalid, 7108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 7092 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-10 15:01:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-10 15:01:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2024-11-10 15:01:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 164 states have internal predecessors, (167), 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) [2024-11-10 15:01:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2024-11-10 15:01:54,263 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 153 [2024-11-10 15:01:54,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:54,263 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2024-11-10 15:01:54,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.085106382978723) internal successors, (384), 94 states have internal predecessors, (384), 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) [2024-11-10 15:01:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2024-11-10 15:01:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-10 15:01:54,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:54,264 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:54,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-10 15:01:54,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-10 15:01:54,464 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:54,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash -844928455, now seen corresponding path program 16 times [2024-11-10 15:01:54,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:54,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499222926] [2024-11-10 15:01:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 98 proven. 370 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:01:55,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:55,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499222926] [2024-11-10 15:01:55,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499222926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:55,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386409519] [2024-11-10 15:01:55,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:01:55,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:55,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:55,150 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:55,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-10 15:01:55,474 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:01:55,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:01:55,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-10 15:01:55,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 128 proven. 340 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:01:55,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:56,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-10 15:01:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 128 proven. 340 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:01:56,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386409519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:56,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:56,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 56 [2024-11-10 15:01:56,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837683979] [2024-11-10 15:01:56,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:56,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-10 15:01:56,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:56,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-10 15:01:56,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=2764, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 15:01:56,611 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand has 57 states, 56 states have (on average 5.5) internal successors, (308), 57 states have internal predecessors, (308), 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) [2024-11-10 15:01:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:57,083 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2024-11-10 15:01:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 15:01:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.5) internal successors, (308), 57 states have internal predecessors, (308), 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) Word has length 161 [2024-11-10 15:01:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:57,084 INFO L225 Difference]: With dead ends: 175 [2024-11-10 15:01:57,084 INFO L226 Difference]: Without dead ends: 175 [2024-11-10 15:01:57,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=2847, Unknown=0, NotChecked=0, Total=3306 [2024-11-10 15:01:57,084 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 15 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:57,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1197 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:01:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-10 15:01:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2024-11-10 15:01:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.0236686390532543) internal successors, (173), 170 states have internal predecessors, (173), 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) [2024-11-10 15:01:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2024-11-10 15:01:57,086 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 161 [2024-11-10 15:01:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:57,086 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2024-11-10 15:01:57,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.5) internal successors, (308), 57 states have internal predecessors, (308), 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) [2024-11-10 15:01:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2024-11-10 15:01:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-10 15:01:57,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:57,087 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:57,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-10 15:01:57,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-10 15:01:57,287 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:57,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -227427146, now seen corresponding path program 13 times [2024-11-10 15:01:57,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:57,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839588685] [2024-11-10 15:01:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 98 proven. 388 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:01:58,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:01:58,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839588685] [2024-11-10 15:01:58,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839588685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:01:58,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134160242] [2024-11-10 15:01:58,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 15:01:58,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:58,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:01:58,040 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:01:58,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-10 15:01:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:01:58,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-10 15:01:58,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:01:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 128 proven. 358 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:01:58,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:01:58,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:01:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 128 proven. 358 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:01:59,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134160242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:01:59,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:01:59,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 51 [2024-11-10 15:01:59,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677039826] [2024-11-10 15:01:59,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:01:59,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-10 15:01:59,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:01:59,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-10 15:01:59,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2354, Unknown=0, NotChecked=0, Total=2652 [2024-11-10 15:01:59,078 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand has 52 states, 51 states have (on average 5.1568627450980395) internal successors, (263), 52 states have internal predecessors, (263), 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) [2024-11-10 15:01:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:01:59,742 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-11-10 15:01:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-10 15:01:59,742 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 5.1568627450980395) internal successors, (263), 52 states have internal predecessors, (263), 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) Word has length 163 [2024-11-10 15:01:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:01:59,743 INFO L225 Difference]: With dead ends: 173 [2024-11-10 15:01:59,743 INFO L226 Difference]: Without dead ends: 173 [2024-11-10 15:01:59,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 289 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=404, Invalid=3378, Unknown=0, NotChecked=0, Total=3782 [2024-11-10 15:01:59,743 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 2 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:01:59,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1511 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:01:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-10 15:01:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-10 15:01:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.023391812865497) internal successors, (175), 172 states have internal predecessors, (175), 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) [2024-11-10 15:01:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2024-11-10 15:01:59,745 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 163 [2024-11-10 15:01:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:01:59,746 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2024-11-10 15:01:59,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 5.1568627450980395) internal successors, (263), 52 states have internal predecessors, (263), 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) [2024-11-10 15:01:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2024-11-10 15:01:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-10 15:01:59,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:01:59,746 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:01:59,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-10 15:01:59,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:01:59,947 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:01:59,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:01:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash 320974944, now seen corresponding path program 17 times [2024-11-10 15:01:59,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:01:59,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205550097] [2024-11-10 15:01:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:01:59,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:01:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:02:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 29 proven. 513 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:02:00,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:02:00,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205550097] [2024-11-10 15:02:00,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205550097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:02:00,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967925986] [2024-11-10 15:02:00,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:02:00,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:02:00,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:02:00,873 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:02:00,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-10 15:02:01,271 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-10 15:02:01,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:02:01,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-10 15:02:01,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:02:01,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 15:02:01,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-10 15:02:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 29 proven. 513 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:02:01,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:02:01,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-10 15:02:01,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-10 15:02:01,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-10 15:02:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 29 proven. 513 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:02:02,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967925986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:02:02,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:02:02,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 56 [2024-11-10 15:02:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113922531] [2024-11-10 15:02:02,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:02:02,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-10 15:02:02,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:02:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-10 15:02:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2926, Unknown=0, NotChecked=0, Total=3080 [2024-11-10 15:02:02,302 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand has 56 states, 56 states have (on average 4.875) internal successors, (273), 56 states have internal predecessors, (273), 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) [2024-11-10 15:02:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:02:03,141 INFO L93 Difference]: Finished difference Result 302 states and 305 transitions. [2024-11-10 15:02:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-10 15:02:03,142 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.875) internal successors, (273), 56 states have internal predecessors, (273), 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) Word has length 169 [2024-11-10 15:02:03,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:02:03,142 INFO L225 Difference]: With dead ends: 302 [2024-11-10 15:02:03,142 INFO L226 Difference]: Without dead ends: 179 [2024-11-10 15:02:03,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=199, Invalid=3961, Unknown=0, NotChecked=0, Total=4160 [2024-11-10 15:02:03,143 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 11 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 15:02:03,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2991 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 15:02:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-10 15:02:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-11-10 15:02:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.022857142857143) internal successors, (179), 176 states have internal predecessors, (179), 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) [2024-11-10 15:02:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2024-11-10 15:02:03,145 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 169 [2024-11-10 15:02:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:02:03,145 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2024-11-10 15:02:03,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.875) internal successors, (273), 56 states have internal predecessors, (273), 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) [2024-11-10 15:02:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2024-11-10 15:02:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-10 15:02:03,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:02:03,145 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:02:03,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-10 15:02:03,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-10 15:02:03,346 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:02:03,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:02:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1294401218, now seen corresponding path program 18 times [2024-11-10 15:02:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:02:03,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512418143] [2024-11-10 15:02:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:02:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:02:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:02:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 128 proven. 452 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:02:04,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:02:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512418143] [2024-11-10 15:02:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512418143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:02:04,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577805037] [2024-11-10 15:02:04,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 15:02:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:02:04,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:02:04,129 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:02:04,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-10 15:02:05,189 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-10 15:02:05,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:02:05,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-10 15:02:05,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:02:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 162 proven. 418 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:02:05,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:02:06,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-10 15:02:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 162 proven. 418 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 15:02:06,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577805037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:02:06,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:02:06,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 62 [2024-11-10 15:02:06,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282078794] [2024-11-10 15:02:06,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:02:06,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-10 15:02:06,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:02:06,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-10 15:02:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=3330, Unknown=0, NotChecked=0, Total=3906 [2024-11-10 15:02:06,349 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand has 63 states, 62 states have (on average 5.838709677419355) internal successors, (362), 63 states have internal predecessors, (362), 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) [2024-11-10 15:02:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:02:06,985 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2024-11-10 15:02:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 15:02:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 5.838709677419355) internal successors, (362), 63 states have internal predecessors, (362), 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) Word has length 173 [2024-11-10 15:02:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:02:06,986 INFO L225 Difference]: With dead ends: 187 [2024-11-10 15:02:06,986 INFO L226 Difference]: Without dead ends: 187 [2024-11-10 15:02:06,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 297 SyntacticMatches, 11 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=760, Invalid=4642, Unknown=0, NotChecked=0, Total=5402 [2024-11-10 15:02:06,987 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:02:06,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1303 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:02:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-10 15:02:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-11-10 15:02:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 181 states have (on average 1.022099447513812) internal successors, (185), 182 states have internal predecessors, (185), 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) [2024-11-10 15:02:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2024-11-10 15:02:06,989 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 173 [2024-11-10 15:02:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:02:06,989 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2024-11-10 15:02:06,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 5.838709677419355) internal successors, (362), 63 states have internal predecessors, (362), 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) [2024-11-10 15:02:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2024-11-10 15:02:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-10 15:02:06,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:02:06,990 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:02:07,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-10 15:02:07,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-11-10 15:02:07,190 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-10 15:02:07,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:02:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1620944507, now seen corresponding path program 14 times [2024-11-10 15:02:07,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:02:07,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363764231] [2024-11-10 15:02:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:02:07,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:02:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:02:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 49 proven. 713 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:02:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:02:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363764231] [2024-11-10 15:02:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363764231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:02:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706993894] [2024-11-10 15:02:08,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:02:08,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:02:08,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:02:08,763 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:02:08,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-10 15:02:08,969 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:02:08,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:02:08,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-11-10 15:02:08,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:02:09,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-10 15:02:09,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2024-11-10 15:02:09,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10