./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrcat-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/cstrcat-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 bfd8ca9d9dda86f57445168715d124831c95b647e7c1b1093bb129b0384cce9e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:58:38,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:58:38,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 14:58:38,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:58:38,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:58:38,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:58:38,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:58:38,862 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:58:38,863 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 14:58:38,863 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 14:58:38,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:58:38,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:58:38,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:58:38,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:58:38,865 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:58:38,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:58:38,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:58:38,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:58:38,866 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:58:38,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:58:38,866 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 14:58:38,867 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 14:58:38,867 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 14:58:38,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:58:38,867 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 14:58:38,868 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:58:38,868 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:58:38,868 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:58:38,868 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:58:38,869 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:58:38,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:58:38,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 14:58:38,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:58:38,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:38,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:58:38,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:58:38,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:58:38,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:58:38,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:58:38,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:58:38,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:58:38,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:58:38,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfd8ca9d9dda86f57445168715d124831c95b647e7c1b1093bb129b0384cce9e [2024-11-10 14:58:39,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:58:39,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:58:39,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:58:39,065 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:58:39,065 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:58:39,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrcat-alloca-2.i [2024-11-10 14:58:40,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:58:40,706 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:58:40,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrcat-alloca-2.i [2024-11-10 14:58:40,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e516a339b/5a8648d0c1964152866fcba159ec53ff/FLAG4b3f38c7e [2024-11-10 14:58:41,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e516a339b/5a8648d0c1964152866fcba159ec53ff [2024-11-10 14:58:41,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:58:41,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:58:41,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:41,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:58:41,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:58:41,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f06366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41, skipping insertion in model container [2024-11-10 14:58:41,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:58:41,392 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 14:58:41,394 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 14:58:41,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:41,405 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:58:41,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:41,510 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:58:41,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41 WrapperNode [2024-11-10 14:58:41,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:41,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:41,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:58:41,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:58:41,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,542 INFO L138 Inliner]: procedures = 117, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2024-11-10 14:58:41,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:41,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:58:41,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:58:41,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:58:41,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,575 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [3, 4]. 57 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 5 writes are split as follows [2, 3]. [2024-11-10 14:58:41,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:58:41,583 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:58:41,586 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:58:41,586 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:58:41,587 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (1/1) ... [2024-11-10 14:58:41,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:41,622 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 14:58:41,636 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 14:58:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 14:58:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 14:58:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 14:58:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 14:58:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 14:58:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 14:58:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:58:41,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:58:41,785 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:58:41,787 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:58:41,930 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L537: call ULTIMATE.dealloc(main_#t~malloc10#1.base, main_#t~malloc10#1.offset);havoc main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call ULTIMATE.dealloc(main_#t~malloc11#1.base, main_#t~malloc11#1.offset);havoc main_#t~malloc11#1.base, main_#t~malloc11#1.offset; [2024-11-10 14:58:41,947 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-11-10 14:58:41,947 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:58:41,956 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:58:41,957 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:58:41,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:41 BoogieIcfgContainer [2024-11-10 14:58:41,957 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:58:41,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:58:41,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:58:41,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:58:41,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:58:41" (1/3) ... [2024-11-10 14:58:41,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370c5e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:41, skipping insertion in model container [2024-11-10 14:58:41,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:41" (2/3) ... [2024-11-10 14:58:41,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370c5e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:41, skipping insertion in model container [2024-11-10 14:58:41,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:41" (3/3) ... [2024-11-10 14:58:41,964 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcat-alloca-2.i [2024-11-10 14:58:41,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:58:41,977 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-11-10 14:58:42,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:58:42,015 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;@3aafb44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:58:42,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-10 14:58:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 32 states have (on average 1.84375) internal successors, (59), 47 states have internal predecessors, (59), 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 14:58:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 14:58:42,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:42,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:42,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:42,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 358615674, now seen corresponding path program 1 times [2024-11-10 14:58:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:42,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566646022] [2024-11-10 14:58:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:42,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:42,234 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 14:58:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:42,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566646022] [2024-11-10 14:58:42,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566646022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:42,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:42,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:42,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623054979] [2024-11-10 14:58:42,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:42,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:42,260 INFO L87 Difference]: Start difference. First operand has 48 states, 32 states have (on average 1.84375) internal successors, (59), 47 states have internal predecessors, (59), 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 5 states, 5 states have (on average 1.6) 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 14:58:42,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:42,427 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2024-11-10 14:58:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:42,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) 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 14:58:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:42,436 INFO L225 Difference]: With dead ends: 81 [2024-11-10 14:58:42,436 INFO L226 Difference]: Without dead ends: 78 [2024-11-10 14:58:42,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:42,440 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 85 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 170 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 14:58:42,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 170 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-10 14:58:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 48. [2024-11-10 14:58:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 47 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 14:58:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-10 14:58:42,469 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 8 [2024-11-10 14:58:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:42,470 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-10 14:58:42,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) 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 14:58:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-10 14:58:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 14:58:42,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:42,475 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:42,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:58:42,475 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:42,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash 358645465, now seen corresponding path program 1 times [2024-11-10 14:58:42,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:42,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200859749] [2024-11-10 14:58:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:42,523 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 14:58:42,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200859749] [2024-11-10 14:58:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200859749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:42,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:42,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264722341] [2024-11-10 14:58:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:42,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:42,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:42,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:42,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:42,530 INFO L87 Difference]: Start difference. First operand 48 states and 57 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 14:58:42,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:42,558 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2024-11-10 14:58:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:42,559 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 14:58:42,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:42,560 INFO L225 Difference]: With dead ends: 50 [2024-11-10 14:58:42,560 INFO L226 Difference]: Without dead ends: 48 [2024-11-10 14:58:42,561 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 14:58:42,561 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:42,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 77 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-10 14:58:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-11-10 14:58:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.7) internal successors, (51), 44 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 14:58:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-11-10 14:58:42,569 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 8 [2024-11-10 14:58:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:42,569 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-11-10 14:58:42,569 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 14:58:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-11-10 14:58:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:42,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:42,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:42,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:58:42,570 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:42,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1767704779, now seen corresponding path program 1 times [2024-11-10 14:58:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979664712] [2024-11-10 14:58:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:42,648 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 14:58:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979664712] [2024-11-10 14:58:42,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979664712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:42,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:58:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730364777] [2024-11-10 14:58:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:42,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:42,650 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 14:58:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:42,670 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-11-10 14:58:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:42,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2024-11-10 14:58:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:42,672 INFO L225 Difference]: With dead ends: 60 [2024-11-10 14:58:42,673 INFO L226 Difference]: Without dead ends: 60 [2024-11-10 14:58:42,674 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 14:58:42,675 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 13 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:42,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-10 14:58:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-11-10 14:58:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 49 states have internal predecessors, (58), 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 14:58:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-10 14:58:42,683 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 9 [2024-11-10 14:58:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:42,683 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-10 14:58:42,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 14:58:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-10 14:58:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:42,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:42,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:42,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 14:58:42,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:42,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash -880201098, now seen corresponding path program 1 times [2024-11-10 14:58:42,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:42,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334832164] [2024-11-10 14:58:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:42,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:42,790 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 14:58:42,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:42,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334832164] [2024-11-10 14:58:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334832164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:42,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:42,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:42,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699797279] [2024-11-10 14:58:42,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:42,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:42,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:42,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:42,794 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 14:58:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:42,885 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-10 14:58:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2024-11-10 14:58:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:42,887 INFO L225 Difference]: With dead ends: 65 [2024-11-10 14:58:42,887 INFO L226 Difference]: Without dead ends: 65 [2024-11-10 14:58:42,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:42,889 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 22 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:42,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 170 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-10 14:58:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2024-11-10 14:58:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 49 states have internal predecessors, (58), 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 14:58:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-10 14:58:42,896 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 9 [2024-11-10 14:58:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:42,897 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-10 14:58:42,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 14:58:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-10 14:58:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:42,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:42,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:42,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 14:58:42,898 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:42,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash -851571947, now seen corresponding path program 1 times [2024-11-10 14:58:42,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:42,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835002726] [2024-11-10 14:58:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:42,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:43,037 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 14:58:43,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:43,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835002726] [2024-11-10 14:58:43,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835002726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:43,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:43,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:43,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141051234] [2024-11-10 14:58:43,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:43,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:43,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:43,039 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 14:58:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:43,087 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-10 14:58:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:43,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-10 14:58:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:43,088 INFO L225 Difference]: With dead ends: 48 [2024-11-10 14:58:43,088 INFO L226 Difference]: Without dead ends: 48 [2024-11-10 14:58:43,088 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 14:58:43,091 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:43,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-10 14:58:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-10 14:58:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.6) internal successors, (56), 47 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 14:58:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-10 14:58:43,097 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 9 [2024-11-10 14:58:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:43,098 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-10 14:58:43,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 14:58:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-10 14:58:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:43,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:43,099 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:43,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:58:43,099 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:43,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash -851571946, now seen corresponding path program 1 times [2024-11-10 14:58:43,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:43,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21181557] [2024-11-10 14:58:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:43,331 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 14:58:43,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21181557] [2024-11-10 14:58:43,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21181557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:43,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:43,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927820908] [2024-11-10 14:58:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:43,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:43,335 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 14:58:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:43,433 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-10 14:58:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2024-11-10 14:58:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:43,435 INFO L225 Difference]: With dead ends: 53 [2024-11-10 14:58:43,435 INFO L226 Difference]: Without dead ends: 53 [2024-11-10 14:58:43,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:43,436 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 41 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:43,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 114 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-10 14:58:43,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2024-11-10 14:58:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 50 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 14:58:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2024-11-10 14:58:43,445 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 9 [2024-11-10 14:58:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:43,445 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2024-11-10 14:58:43,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 14:58:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2024-11-10 14:58:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 14:58:43,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:43,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:43,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:58:43,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:43,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1100947693, now seen corresponding path program 1 times [2024-11-10 14:58:43,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:43,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640787050] [2024-11-10 14:58:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:43,488 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 14:58:43,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640787050] [2024-11-10 14:58:43,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640787050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:43,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:43,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993601826] [2024-11-10 14:58:43,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:43,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:43,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:43,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:43,490 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 14:58:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:43,512 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-10 14:58:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:43,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 14:58:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:43,513 INFO L225 Difference]: With dead ends: 49 [2024-11-10 14:58:43,513 INFO L226 Difference]: Without dead ends: 49 [2024-11-10 14:58:43,513 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 14:58:43,514 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:43,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 57 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-10 14:58:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-10 14:58:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 48 states have internal predecessors, (58), 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 14:58:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2024-11-10 14:58:43,520 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 12 [2024-11-10 14:58:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:43,520 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2024-11-10 14:58:43,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 14:58:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2024-11-10 14:58:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 14:58:43,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:43,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:43,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:58:43,521 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:43,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1100947692, now seen corresponding path program 1 times [2024-11-10 14:58:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:43,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784223473] [2024-11-10 14:58:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:43,679 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 14:58:43,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784223473] [2024-11-10 14:58:43,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784223473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:43,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:43,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:43,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409516090] [2024-11-10 14:58:43,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:43,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:43,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:43,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:43,681 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 14:58:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:43,725 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2024-11-10 14:58:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 14:58:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:43,726 INFO L225 Difference]: With dead ends: 63 [2024-11-10 14:58:43,726 INFO L226 Difference]: Without dead ends: 63 [2024-11-10 14:58:43,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:58:43,726 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:43,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-10 14:58:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-11-10 14:58:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.4565217391304348) 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 14:58:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-10 14:58:43,733 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 12 [2024-11-10 14:58:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:43,733 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-10 14:58:43,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 14:58:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-10 14:58:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 14:58:43,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:43,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:43,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 14:58:43,736 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:43,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1386565141, now seen corresponding path program 1 times [2024-11-10 14:58:43,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:43,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574056859] [2024-11-10 14:58:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:43,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:43,888 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 14:58:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574056859] [2024-11-10 14:58:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574056859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:43,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 14:58:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962392074] [2024-11-10 14:58:43,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:43,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 14:58:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 14:58:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:43,891 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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 14:58:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:43,927 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-11-10 14:58:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:43,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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 14:58:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:43,928 INFO L225 Difference]: With dead ends: 61 [2024-11-10 14:58:43,931 INFO L226 Difference]: Without dead ends: 61 [2024-11-10 14:58:43,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:43,932 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:43,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 116 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-10 14:58:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2024-11-10 14:58:43,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 51 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 14:58:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2024-11-10 14:58:43,934 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 12 [2024-11-10 14:58:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:43,935 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2024-11-10 14:58:43,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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 14:58:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2024-11-10 14:58:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 14:58:43,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:43,938 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:43,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 14:58:43,938 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:43,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1703898184, now seen corresponding path program 1 times [2024-11-10 14:58:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:43,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160603175] [2024-11-10 14:58:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:44,135 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 14:58:44,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:44,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160603175] [2024-11-10 14:58:44,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160603175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:44,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516663392] [2024-11-10 14:58:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:44,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:44,140 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 14:58:44,141 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 14:58:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:44,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 14:58:44,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:44,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:58:44,290 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 14:58:44,297 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 14:58:44,486 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 14:58:44,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:44,735 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 14:58:44,775 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 14:58:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516663392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:44,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:44,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-10 14:58:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91000422] [2024-11-10 14:58:44,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:44,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 14:58:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 14:58:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-10 14:58:44,778 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 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 14:58:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:45,046 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-11-10 14:58:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 14:58:45,047 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 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 14:58:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:45,047 INFO L225 Difference]: With dead ends: 55 [2024-11-10 14:58:45,047 INFO L226 Difference]: Without dead ends: 55 [2024-11-10 14:58:45,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2024-11-10 14:58:45,048 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 84 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:45,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 257 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-10 14:58:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2024-11-10 14:58:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 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 14:58:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-10 14:58:45,052 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 13 [2024-11-10 14:58:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:45,053 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-10 14:58:45,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 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 14:58:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-10 14:58:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-10 14:58:45,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:45,054 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:45,067 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 14:58:45,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 14:58:45,259 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:45,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash -706212362, now seen corresponding path program 1 times [2024-11-10 14:58:45,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:45,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880106494] [2024-11-10 14:58:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:45,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:45,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880106494] [2024-11-10 14:58:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880106494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221588860] [2024-11-10 14:58:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:45,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:45,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:45,322 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 14:58:45,327 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 14:58:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:45,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:58:45,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:45,414 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221588860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:45,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 14:58:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036983688] [2024-11-10 14:58:45,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:45,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:45,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:45,416 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 14:58:45,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:45,431 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2024-11-10 14:58:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2024-11-10 14:58:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:45,432 INFO L225 Difference]: With dead ends: 59 [2024-11-10 14:58:45,432 INFO L226 Difference]: Without dead ends: 59 [2024-11-10 14:58:45,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:45,433 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 1 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:45,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-10 14:58:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-10 14:58:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.3877551020408163) 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 14:58:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-11-10 14:58:45,435 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 16 [2024-11-10 14:58:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:45,435 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-11-10 14:58:45,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 14:58:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-11-10 14:58:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-10 14:58:45,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:45,436 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:45,452 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 14:58:45,636 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,SelfDestructingSolverStorable10 [2024-11-10 14:58:45,638 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:45,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash -999615369, now seen corresponding path program 1 times [2024-11-10 14:58:45,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:45,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081238036] [2024-11-10 14:58:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:45,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:45,912 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 14:58:45,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081238036] [2024-11-10 14:58:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081238036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154985790] [2024-11-10 14:58:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:45,914 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 14:58:45,918 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 14:58:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:45,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 14:58:45,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:46,002 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 14:58:46,013 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 14:58:46,297 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 14:58:46,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:46,550 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 14:58:46,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154985790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:46,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:46,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-10 14:58:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073763741] [2024-11-10 14:58:46,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:46,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 14:58:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 14:58:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2024-11-10 14:58:46,552 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 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 14:58:46,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:46,748 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-11-10 14:58:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 14:58:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 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 16 [2024-11-10 14:58:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:46,749 INFO L225 Difference]: With dead ends: 61 [2024-11-10 14:58:46,749 INFO L226 Difference]: Without dead ends: 61 [2024-11-10 14:58:46,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2024-11-10 14:58:46,750 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:46,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 210 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-10 14:58:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-10 14:58:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 56 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 14:58:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-11-10 14:58:46,752 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 16 [2024-11-10 14:58:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:46,753 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-11-10 14:58:46,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 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 14:58:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-11-10 14:58:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 14:58:46,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:46,753 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:46,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:46,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:46,955 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:46,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash -417748754, now seen corresponding path program 1 times [2024-11-10 14:58:46,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:46,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199662904] [2024-11-10 14:58:46,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:46,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:47,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:47,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199662904] [2024-11-10 14:58:47,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199662904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:47,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:47,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228766972] [2024-11-10 14:58:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:47,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:47,032 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 14:58:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:47,070 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2024-11-10 14:58:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 14:58:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:47,071 INFO L225 Difference]: With dead ends: 77 [2024-11-10 14:58:47,071 INFO L226 Difference]: Without dead ends: 77 [2024-11-10 14:58:47,071 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 14:58:47,072 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:47,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 104 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-10 14:58:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-10 14:58:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 76 states have internal predecessors, (88), 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 14:58:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-10 14:58:47,074 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 17 [2024-11-10 14:58:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:47,074 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-10 14:58:47,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 14:58:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-10 14:58:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 14:58:47,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:47,075 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:47,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 14:58:47,075 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:47,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1089803055, now seen corresponding path program 1 times [2024-11-10 14:58:47,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:47,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735395014] [2024-11-10 14:58:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:47,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:47,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735395014] [2024-11-10 14:58:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735395014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:47,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:47,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:58:47,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692401648] [2024-11-10 14:58:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:47,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:47,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:47,166 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 14:58:47,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:47,183 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2024-11-10 14:58:47,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:47,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 14:58:47,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:47,183 INFO L225 Difference]: With dead ends: 76 [2024-11-10 14:58:47,183 INFO L226 Difference]: Without dead ends: 76 [2024-11-10 14:58:47,184 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 14:58:47,184 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:47,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 63 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-10 14:58:47,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2024-11-10 14:58:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 55 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 14:58:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-10 14:58:47,186 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 17 [2024-11-10 14:58:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:47,186 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-10 14:58:47,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 14:58:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-10 14:58:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-10 14:58:47,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:47,187 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:47,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 14:58:47,187 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:47,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash -65309517, now seen corresponding path program 1 times [2024-11-10 14:58:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:47,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594365933] [2024-11-10 14:58:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:47,261 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 14:58:47,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:47,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594365933] [2024-11-10 14:58:47,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594365933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:47,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124620394] [2024-11-10 14:58:47,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:47,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:47,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:47,264 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 14:58:47,265 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 14:58:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:47,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 14:58:47,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:47,388 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 14:58:47,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:47,423 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 22 treesize of output 18 [2024-11-10 14:58:47,488 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 14:58:47,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124620394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:47,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:47,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-10 14:58:47,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780056607] [2024-11-10 14:58:47,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:47,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 14:58:47,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 14:58:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-10 14:58:47,489 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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 14:58:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:47,576 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2024-11-10 14:58:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:47,576 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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 14:58:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:47,576 INFO L225 Difference]: With dead ends: 86 [2024-11-10 14:58:47,576 INFO L226 Difference]: Without dead ends: 86 [2024-11-10 14:58:47,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2024-11-10 14:58:47,577 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:47,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 242 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-10 14:58:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-10 14:58:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.25) internal successors, (95), 83 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 14:58:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2024-11-10 14:58:47,583 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 18 [2024-11-10 14:58:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:47,583 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2024-11-10 14:58:47,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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 14:58:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2024-11-10 14:58:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-10 14:58:47,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:47,584 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:47,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 14:58:47,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 14:58:47,785 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:47,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash -570868142, now seen corresponding path program 1 times [2024-11-10 14:58:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103905189] [2024-11-10 14:58:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:47,940 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 14:58:47,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:47,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103905189] [2024-11-10 14:58:47,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103905189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:47,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502964288] [2024-11-10 14:58:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:47,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:47,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:47,942 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 14:58:47,943 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 14:58:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:47,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 14:58:47,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:48,159 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 14:58:48,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:48,214 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 22 treesize of output 18 [2024-11-10 14:58:48,326 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 14:58:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502964288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:48,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-10 14:58:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677455518] [2024-11-10 14:58:48,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:48,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 14:58:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 14:58:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-10 14:58:48,327 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 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 14:58:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:48,722 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2024-11-10 14:58:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 14:58:48,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 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 14:58:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:48,723 INFO L225 Difference]: With dead ends: 89 [2024-11-10 14:58:48,723 INFO L226 Difference]: Without dead ends: 89 [2024-11-10 14:58:48,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2024-11-10 14:58:48,724 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 100 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:48,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 407 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:58:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-10 14:58:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2024-11-10 14:58:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 73 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 14:58:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2024-11-10 14:58:48,726 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 18 [2024-11-10 14:58:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:48,726 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2024-11-10 14:58:48,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 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 14:58:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2024-11-10 14:58:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-10 14:58:48,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:48,727 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:48,739 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 14:58:48,927 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,SelfDestructingSolverStorable15 [2024-11-10 14:58:48,928 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:48,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash 936683667, now seen corresponding path program 1 times [2024-11-10 14:58:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:48,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438510647] [2024-11-10 14:58:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:49,070 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 14:58:49,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438510647] [2024-11-10 14:58:49,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438510647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:49,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627207500] [2024-11-10 14:58:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:49,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:49,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:49,074 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 14:58:49,075 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 14:58:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:49,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 14:58:49,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:49,288 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 14:58:49,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:49,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627207500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:49,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:49,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2024-11-10 14:58:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243631789] [2024-11-10 14:58:49,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:49,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 14:58:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:49,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 14:58:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 14:58:49,289 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 14:58:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:49,438 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2024-11-10 14:58:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:58:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 14:58:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:49,438 INFO L225 Difference]: With dead ends: 75 [2024-11-10 14:58:49,438 INFO L226 Difference]: Without dead ends: 75 [2024-11-10 14:58:49,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-10 14:58:49,439 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:49,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 111 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-10 14:58:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2024-11-10 14:58:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 54 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 14:58:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-10 14:58:49,441 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 18 [2024-11-10 14:58:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:49,441 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-10 14:58:49,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 14:58:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-10 14:58:49,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:49,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:49,442 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] [2024-11-10 14:58:49,454 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 14:58:49,642 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,SelfDestructingSolverStorable16 [2024-11-10 14:58:49,643 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:49,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash -15667703, now seen corresponding path program 1 times [2024-11-10 14:58:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:49,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691430559] [2024-11-10 14:58:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:49,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:49,679 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 14:58:49,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:49,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691430559] [2024-11-10 14:58:49,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691430559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:49,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:49,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:49,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706597410] [2024-11-10 14:58:49,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:49,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:49,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:49,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:49,681 INFO L87 Difference]: Start difference. First operand 55 states and 64 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 14:58:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:49,731 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2024-11-10 14:58:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:49,732 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 14:58:49,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:49,732 INFO L225 Difference]: With dead ends: 54 [2024-11-10 14:58:49,732 INFO L226 Difference]: Without dead ends: 54 [2024-11-10 14:58:49,732 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 14:58:49,733 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:49,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 59 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-10 14:58:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-10 14:58:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.3125) internal successors, (63), 53 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 14:58:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-10 14:58:49,734 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 21 [2024-11-10 14:58:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:49,734 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-10 14:58:49,734 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 14:58:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-10 14:58:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:49,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:49,734 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] [2024-11-10 14:58:49,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 14:58:49,735 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:49,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:49,735 INFO L85 PathProgramCache]: Analyzing trace with hash -15667702, now seen corresponding path program 1 times [2024-11-10 14:58:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239643272] [2024-11-10 14:58:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:49,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:49,938 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 14:58:49,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:49,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239643272] [2024-11-10 14:58:49,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239643272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:49,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468065900] [2024-11-10 14:58:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:49,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:49,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:49,941 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 14:58:49,944 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 14:58:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:49,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 14:58:50,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:50,064 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 14:58:50,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:50,094 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 20 treesize of output 16 [2024-11-10 14:58:50,111 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 14:58:50,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468065900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:50,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:50,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-11-10 14:58:50,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029167037] [2024-11-10 14:58:50,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:50,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 14:58:50,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:50,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 14:58:50,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 14:58:50,113 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 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 14:58:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:50,164 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-11-10 14:58:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:58:50,164 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 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 14:58:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:50,165 INFO L225 Difference]: With dead ends: 61 [2024-11-10 14:58:50,165 INFO L226 Difference]: Without dead ends: 61 [2024-11-10 14:58:50,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-10 14:58:50,166 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:50,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 130 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-10 14:58:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2024-11-10 14:58:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.3) internal successors, (65), 55 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 14:58:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-10 14:58:50,168 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 21 [2024-11-10 14:58:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:50,168 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-10 14:58:50,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 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 14:58:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-10 14:58:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 14:58:50,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:50,169 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] [2024-11-10 14:58:50,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:50,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:50,373 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:50,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1394885163, now seen corresponding path program 1 times [2024-11-10 14:58:50,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470459366] [2024-11-10 14:58:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:50,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:50,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470459366] [2024-11-10 14:58:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470459366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:50,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:50,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 14:58:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960247010] [2024-11-10 14:58:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:50,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 14:58:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 14:58:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:50,484 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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 14:58:50,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:50,539 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2024-11-10 14:58:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:50,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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 24 [2024-11-10 14:58:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:50,540 INFO L225 Difference]: With dead ends: 70 [2024-11-10 14:58:50,540 INFO L226 Difference]: Without dead ends: 70 [2024-11-10 14:58:50,541 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 14:58:50,541 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 18 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:50,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 152 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-10 14:58:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2024-11-10 14:58:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 57 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 14:58:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-10 14:58:50,546 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 24 [2024-11-10 14:58:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:50,546 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-10 14:58:50,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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 14:58:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-10 14:58:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 14:58:50,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:50,546 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] [2024-11-10 14:58:50,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 14:58:50,547 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:50,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1394885162, now seen corresponding path program 1 times [2024-11-10 14:58:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972405157] [2024-11-10 14:58:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:50,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972405157] [2024-11-10 14:58:50,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972405157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:50,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:50,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:58:50,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530791869] [2024-11-10 14:58:50,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:50,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:50,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:50,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:50,590 INFO L87 Difference]: Start difference. First operand 58 states and 68 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 14:58:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:50,618 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-10 14:58:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:50,618 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 24 [2024-11-10 14:58:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:50,618 INFO L225 Difference]: With dead ends: 57 [2024-11-10 14:58:50,619 INFO L226 Difference]: Without dead ends: 57 [2024-11-10 14:58:50,619 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 14:58:50,619 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:50,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-10 14:58:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-10 14:58:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 56 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 14:58:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-11-10 14:58:50,621 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 24 [2024-11-10 14:58:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:50,621 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-11-10 14:58:50,621 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 14:58:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-11-10 14:58:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 14:58:50,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:50,622 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] [2024-11-10 14:58:50,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 14:58:50,622 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:50,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1394887373, now seen corresponding path program 1 times [2024-11-10 14:58:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:50,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726165874] [2024-11-10 14:58:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:50,907 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 14:58:50,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726165874] [2024-11-10 14:58:50,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726165874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756233041] [2024-11-10 14:58:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:50,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:50,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:50,909 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 14:58:50,910 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 14:58:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:50,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 14:58:50,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:50,998 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 14:58:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:51,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:51,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756233041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:51,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:51,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-10 14:58:51,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218619428] [2024-11-10 14:58:51,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:51,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:51,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-10 14:58:51,035 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 14:58:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,070 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2024-11-10 14:58:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:51,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 24 [2024-11-10 14:58:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,072 INFO L225 Difference]: With dead ends: 90 [2024-11-10 14:58:51,072 INFO L226 Difference]: Without dead ends: 90 [2024-11-10 14:58:51,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:58:51,073 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 163 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 14:58:51,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 163 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-10 14:58:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-10 14:58:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 88 states have internal predecessors, (100), 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 14:58:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2024-11-10 14:58:51,075 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 24 [2024-11-10 14:58:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,076 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2024-11-10 14:58:51,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 14:58:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2024-11-10 14:58:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 14:58:51,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,077 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] [2024-11-10 14:58:51,090 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 14:58:51,278 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,SelfDestructingSolverStorable21 [2024-11-10 14:58:51,279 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:51,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash 986063148, now seen corresponding path program 1 times [2024-11-10 14:58:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:51,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641331601] [2024-11-10 14:58:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:51,539 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 14:58:51,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:51,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641331601] [2024-11-10 14:58:51,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641331601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095996680] [2024-11-10 14:58:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:51,544 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 14:58:51,545 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 14:58:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:51,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 14:58:51,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:51,679 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 14:58:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:51,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095996680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:51,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:51,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2024-11-10 14:58:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31318547] [2024-11-10 14:58:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:51,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 14:58:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 14:58:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:51,723 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) 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 14:58:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,811 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-11-10 14:58:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 14:58:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) 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 24 [2024-11-10 14:58:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,812 INFO L225 Difference]: With dead ends: 97 [2024-11-10 14:58:51,812 INFO L226 Difference]: Without dead ends: 97 [2024-11-10 14:58:51,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-10 14:58:51,813 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 180 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-10 14:58:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2024-11-10 14:58:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 78 states have internal predecessors, (90), 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 14:58:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2024-11-10 14:58:51,815 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 24 [2024-11-10 14:58:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,816 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2024-11-10 14:58:51,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) 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 14:58:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2024-11-10 14:58:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 14:58:51,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,817 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] [2024-11-10 14:58:51,835 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 14:58:52,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:52,018 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:52,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1197414061, now seen corresponding path program 1 times [2024-11-10 14:58:52,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:52,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157932046] [2024-11-10 14:58:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:52,391 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 14:58:52,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157932046] [2024-11-10 14:58:52,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157932046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501348208] [2024-11-10 14:58:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:52,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:52,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:52,393 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 14:58:52,395 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 14:58:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:52,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 14:58:52,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:52,568 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 14:58:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:52,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:52,623 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 13 treesize of output 11 [2024-11-10 14:58:52,627 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 14 treesize of output 12 [2024-11-10 14:58:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:52,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501348208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:52,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:52,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2024-11-10 14:58:52,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487415034] [2024-11-10 14:58:52,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:52,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 14:58:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 14:58:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-10 14:58:52,787 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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 14:58:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:53,373 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2024-11-10 14:58:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 14:58:53,373 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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 24 [2024-11-10 14:58:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:53,374 INFO L225 Difference]: With dead ends: 123 [2024-11-10 14:58:53,374 INFO L226 Difference]: Without dead ends: 123 [2024-11-10 14:58:53,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 14:58:53,376 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 305 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:53,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 280 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:58:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-10 14:58:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 86. [2024-11-10 14:58:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 85 states have internal predecessors, (99), 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 14:58:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-11-10 14:58:53,380 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 24 [2024-11-10 14:58:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:53,380 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-11-10 14:58:53,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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 14:58:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-11-10 14:58:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-10 14:58:53,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:53,382 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 14:58:53,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:53,583 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,SelfDestructingSolverStorable23 [2024-11-10 14:58:53,584 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:53,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash 291767043, now seen corresponding path program 1 times [2024-11-10 14:58:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:53,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538392995] [2024-11-10 14:58:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:53,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:53,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:53,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538392995] [2024-11-10 14:58:53,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538392995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:53,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:53,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:53,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68458685] [2024-11-10 14:58:53,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:53,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:53,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:53,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:53,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:53,613 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 14:58:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:53,638 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2024-11-10 14:58:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:53,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 14:58:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:53,639 INFO L225 Difference]: With dead ends: 85 [2024-11-10 14:58:53,639 INFO L226 Difference]: Without dead ends: 85 [2024-11-10 14:58:53,639 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 14:58:53,639 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:53,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 73 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-10 14:58:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-10 14:58:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 84 states have internal predecessors, (98), 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 14:58:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-11-10 14:58:53,641 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 25 [2024-11-10 14:58:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:53,641 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-11-10 14:58:53,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 14:58:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-11-10 14:58:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-10 14:58:53,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:53,641 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 14:58:53,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-10 14:58:53,641 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:53,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash 291767044, now seen corresponding path program 1 times [2024-11-10 14:58:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:53,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790179303] [2024-11-10 14:58:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:53,761 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 14:58:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790179303] [2024-11-10 14:58:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790179303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599758048] [2024-11-10 14:58:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:53,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:53,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:53,767 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 14:58:53,768 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 14:58:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:53,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 14:58:53,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:53,882 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 14:58:53,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:53,939 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 14:58:53,948 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 14:58:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599758048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:53,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:53,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-10 14:58:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434579126] [2024-11-10 14:58:53,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:53,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 14:58:53,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 14:58:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 14:58:53,950 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 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 14:58:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,041 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2024-11-10 14:58:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 14:58:54,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 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) Word has length 25 [2024-11-10 14:58:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,042 INFO L225 Difference]: With dead ends: 89 [2024-11-10 14:58:54,042 INFO L226 Difference]: Without dead ends: 89 [2024-11-10 14:58:54,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:58:54,043 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 182 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:54,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-10 14:58:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2024-11-10 14:58:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 85 states have internal predecessors, (99), 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 14:58:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-11-10 14:58:54,044 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 25 [2024-11-10 14:58:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,044 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-11-10 14:58:54,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 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 14:58:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-11-10 14:58:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 14:58:54,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,045 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] [2024-11-10 14:58:54,058 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 14:58:54,249 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,SelfDestructingSolverStorable25 [2024-11-10 14:58:54,250 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:54,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash -981848729, now seen corresponding path program 1 times [2024-11-10 14:58:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:54,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480440893] [2024-11-10 14:58:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480440893] [2024-11-10 14:58:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480440893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:54,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 14:58:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257778802] [2024-11-10 14:58:54,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:54,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 14:58:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 14:58:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:54,377 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 14:58:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,411 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2024-11-10 14:58:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:54,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 28 [2024-11-10 14:58:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,412 INFO L225 Difference]: With dead ends: 139 [2024-11-10 14:58:54,412 INFO L226 Difference]: Without dead ends: 139 [2024-11-10 14:58:54,412 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 14:58:54,412 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 205 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-10 14:58:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2024-11-10 14:58:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.1791044776119404) internal successors, (158), 137 states have internal predecessors, (158), 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 14:58:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2024-11-10 14:58:54,414 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 28 [2024-11-10 14:58:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,414 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2024-11-10 14:58:54,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 14:58:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2024-11-10 14:58:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 14:58:54,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,415 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] [2024-11-10 14:58:54,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-10 14:58:54,415 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:54,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash -950828922, now seen corresponding path program 1 times [2024-11-10 14:58:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:54,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59995511] [2024-11-10 14:58:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:54,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59995511] [2024-11-10 14:58:54,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59995511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:54,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:54,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 14:58:54,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049293242] [2024-11-10 14:58:54,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:54,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:58:54,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:54,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:58:54,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:58:54,570 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 14:58:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,633 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2024-11-10 14:58:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 14:58:54,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 28 [2024-11-10 14:58:54,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,634 INFO L225 Difference]: With dead ends: 160 [2024-11-10 14:58:54,635 INFO L226 Difference]: Without dead ends: 160 [2024-11-10 14:58:54,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-10 14:58:54,635 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 194 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-10 14:58:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2024-11-10 14:58:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 126 states have internal predecessors, (146), 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 14:58:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2024-11-10 14:58:54,638 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 28 [2024-11-10 14:58:54,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,638 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2024-11-10 14:58:54,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 14:58:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2024-11-10 14:58:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 14:58:54,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,638 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] [2024-11-10 14:58:54,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-10 14:58:54,639 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:54,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1266929031, now seen corresponding path program 1 times [2024-11-10 14:58:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:54,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135085681] [2024-11-10 14:58:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:54,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135085681] [2024-11-10 14:58:54,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135085681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:54,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:54,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 14:58:54,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596650973] [2024-11-10 14:58:54,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:54,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 14:58:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 14:58:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-10 14:58:54,777 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 14:58:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:54,819 INFO L93 Difference]: Finished difference Result 177 states and 203 transitions. [2024-11-10 14:58:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:58:54,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 28 [2024-11-10 14:58:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:54,820 INFO L225 Difference]: With dead ends: 177 [2024-11-10 14:58:54,820 INFO L226 Difference]: Without dead ends: 177 [2024-11-10 14:58:54,820 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 14:58:54,821 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:54,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 175 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-10 14:58:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 131. [2024-11-10 14:58:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 130 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 14:58:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2024-11-10 14:58:54,823 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 28 [2024-11-10 14:58:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:54,823 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2024-11-10 14:58:54,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 14:58:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2024-11-10 14:58:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 14:58:54,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:54,824 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, 1, 1, 1, 1, 1] [2024-11-10 14:58:54,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-10 14:58:54,824 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:54,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1334975396, now seen corresponding path program 1 times [2024-11-10 14:58:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:54,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28801133] [2024-11-10 14:58:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:54,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28801133] [2024-11-10 14:58:54,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28801133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:54,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:54,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377477154] [2024-11-10 14:58:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:54,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:54,988 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 14:58:55,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:55,007 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2024-11-10 14:58:55,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:55,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 30 [2024-11-10 14:58:55,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:55,008 INFO L225 Difference]: With dead ends: 130 [2024-11-10 14:58:55,008 INFO L226 Difference]: Without dead ends: 94 [2024-11-10 14:58:55,008 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 14:58:55,008 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:55,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-10 14:58:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-10 14:58:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 91 states have (on average 1.164835164835165) internal successors, (106), 93 states have internal predecessors, (106), 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 14:58:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-11-10 14:58:55,010 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 30 [2024-11-10 14:58:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:55,010 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-11-10 14:58:55,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 14:58:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-11-10 14:58:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 14:58:55,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:55,010 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:55,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-10 14:58:55,010 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:55,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -658826200, now seen corresponding path program 2 times [2024-11-10 14:58:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575087931] [2024-11-10 14:58:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:55,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575087931] [2024-11-10 14:58:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575087931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360868863] [2024-11-10 14:58:55,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:55,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:55,335 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 14:58:55,350 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 14:58:55,423 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:58:55,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:55,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 14:58:55,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:55,578 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 [2024-11-10 14:58:55,741 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-10 14:58:55,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-10 14:58:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:55,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:55,863 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 29 treesize of output 25 [2024-11-10 14:58:55,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:58:55,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-10 14:58:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:56,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360868863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:56,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 33 [2024-11-10 14:58:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182439763] [2024-11-10 14:58:56,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:56,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 14:58:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 14:58:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 14:58:56,120 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 33 states, 33 states have (on average 2.484848484848485) internal successors, (82), 33 states have internal predecessors, (82), 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 14:58:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:57,697 INFO L93 Difference]: Finished difference Result 169 states and 187 transitions. [2024-11-10 14:58:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-10 14:58:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.484848484848485) internal successors, (82), 33 states have internal predecessors, (82), 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 14:58:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:57,698 INFO L225 Difference]: With dead ends: 169 [2024-11-10 14:58:57,698 INFO L226 Difference]: Without dead ends: 159 [2024-11-10 14:58:57,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=545, Invalid=3237, Unknown=0, NotChecked=0, Total=3782 [2024-11-10 14:58:57,700 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 154 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:57,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 470 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 14:58:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-10 14:58:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 115. [2024-11-10 14:58:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 112 states have (on average 1.1607142857142858) internal successors, (130), 114 states have internal predecessors, (130), 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 14:58:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2024-11-10 14:58:57,703 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 31 [2024-11-10 14:58:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:57,703 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2024-11-10 14:58:57,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.484848484848485) internal successors, (82), 33 states have internal predecessors, (82), 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 14:58:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2024-11-10 14:58:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 14:58:57,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:57,704 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-10 14:58:57,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:57,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:57,908 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:57,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash -883036763, now seen corresponding path program 1 times [2024-11-10 14:58:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:57,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825275434] [2024-11-10 14:58:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825275434] [2024-11-10 14:58:58,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825275434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198120385] [2024-11-10 14:58:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:58,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:58,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:58,003 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 14:58:58,004 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 14:58:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:58,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 14:58:58,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:58,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198120385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:58,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:58,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-10 14:58:58,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926613889] [2024-11-10 14:58:58,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:58,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 14:58:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 14:58:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-10 14:58:58,167 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 14:58:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:58,275 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2024-11-10 14:58:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 14:58:58,276 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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) Word has length 32 [2024-11-10 14:58:58,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:58,277 INFO L225 Difference]: With dead ends: 125 [2024-11-10 14:58:58,277 INFO L226 Difference]: Without dead ends: 125 [2024-11-10 14:58:58,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2024-11-10 14:58:58,278 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:58,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 172 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-10 14:58:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-11-10 14:58:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.146551724137931) internal successors, (133), 118 states have internal predecessors, (133), 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 14:58:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2024-11-10 14:58:58,279 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 32 [2024-11-10 14:58:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:58,279 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2024-11-10 14:58:58,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 14:58:58,279 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2024-11-10 14:58:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-10 14:58:58,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:58,280 INFO L215 NwaCegarLoop]: trace histogram [3, 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 14:58:58,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 14:58:58,484 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,SelfDestructingSolverStorable31 [2024-11-10 14:58:58,485 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1672951417, now seen corresponding path program 2 times [2024-11-10 14:58:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048531918] [2024-11-10 14:58:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:58:58,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:58,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048531918] [2024-11-10 14:58:58,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048531918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:58,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006841874] [2024-11-10 14:58:58,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:58,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:58,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:58,673 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 14:58:58,676 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 14:58:58,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:58:58,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:58,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 14:58:58,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:58:58,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:59,057 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 14:58:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:58:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006841874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:59,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-10 14:58:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948130041] [2024-11-10 14:58:59,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:59,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 14:58:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 14:58:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-10 14:58:59,110 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 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 14:58:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:59,256 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2024-11-10 14:58:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 14:58:59,256 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 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) Word has length 36 [2024-11-10 14:58:59,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:59,257 INFO L225 Difference]: With dead ends: 127 [2024-11-10 14:58:59,257 INFO L226 Difference]: Without dead ends: 127 [2024-11-10 14:58:59,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-10 14:58:59,258 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:59,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 345 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:59,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-10 14:58:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2024-11-10 14:58:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 119 states have (on average 1.1428571428571428) internal successors, (136), 121 states have internal predecessors, (136), 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 14:58:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2024-11-10 14:58:59,260 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 36 [2024-11-10 14:58:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:59,260 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2024-11-10 14:58:59,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 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 14:58:59,260 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2024-11-10 14:58:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-10 14:58:59,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:59,260 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 14:58:59,272 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 14:58:59,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:59,461 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:58:59,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash -321886424, now seen corresponding path program 1 times [2024-11-10 14:58:59,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:59,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406662761] [2024-11-10 14:58:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:59,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:59,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406662761] [2024-11-10 14:58:59,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406662761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:59,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162374738] [2024-11-10 14:58:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:59,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:59,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:59,648 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 14:58:59,649 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 14:58:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:59,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 14:58:59,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:59,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:59,944 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 14:58:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:59,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162374738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:59,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:59,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-10 14:58:59,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466095032] [2024-11-10 14:58:59,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:59,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 14:58:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 14:58:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-10 14:58:59,969 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 20 states have internal predecessors, (81), 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 14:59:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:00,084 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2024-11-10 14:59:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 14:59:00,085 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 20 states have internal predecessors, (81), 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 14:59:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:00,085 INFO L225 Difference]: With dead ends: 136 [2024-11-10 14:59:00,085 INFO L226 Difference]: Without dead ends: 136 [2024-11-10 14:59:00,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-10 14:59:00,086 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:00,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 186 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:59:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-10 14:59:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2024-11-10 14:59:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 129 states have (on average 1.1317829457364341) internal successors, (146), 131 states have internal predecessors, (146), 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 14:59:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2024-11-10 14:59:00,088 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 37 [2024-11-10 14:59:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:00,088 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2024-11-10 14:59:00,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 20 states have internal predecessors, (81), 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 14:59:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2024-11-10 14:59:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 14:59:00,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:00,089 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:00,106 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 14:59:00,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:00,290 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:59:00,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash -701626031, now seen corresponding path program 3 times [2024-11-10 14:59:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415271688] [2024-11-10 14:59:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:00,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:00,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415271688] [2024-11-10 14:59:00,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415271688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586311609] [2024-11-10 14:59:00,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:59:00,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:00,672 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 14:59:00,673 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 14:59:00,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 14:59:00,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:00,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-10 14:59:00,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:00,988 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 14:59:01,291 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-10 14:59:01,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 26 [2024-11-10 14:59:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:01,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:01,507 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 44 treesize of output 38 [2024-11-10 14:59:01,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:59:01,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-10 14:59:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586311609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:01,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2024-11-10 14:59:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78046312] [2024-11-10 14:59:01,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:01,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-10 14:59:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-10 14:59:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1654, Unknown=0, NotChecked=0, Total=1806 [2024-11-10 14:59:01,862 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand has 43 states, 43 states have (on average 2.488372093023256) internal successors, (107), 43 states have internal predecessors, (107), 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 14:59:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:04,507 INFO L93 Difference]: Finished difference Result 247 states and 270 transitions. [2024-11-10 14:59:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-10 14:59:04,507 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.488372093023256) internal successors, (107), 43 states have internal predecessors, (107), 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 38 [2024-11-10 14:59:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:04,508 INFO L225 Difference]: With dead ends: 247 [2024-11-10 14:59:04,508 INFO L226 Difference]: Without dead ends: 232 [2024-11-10 14:59:04,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=951, Invalid=7421, Unknown=0, NotChecked=0, Total=8372 [2024-11-10 14:59:04,510 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 325 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:04,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 619 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 14:59:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-10 14:59:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 156. [2024-11-10 14:59:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 155 states have internal predecessors, (174), 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 14:59:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 174 transitions. [2024-11-10 14:59:04,512 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 174 transitions. Word has length 38 [2024-11-10 14:59:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:04,513 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 174 transitions. [2024-11-10 14:59:04,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.488372093023256) internal successors, (107), 43 states have internal predecessors, (107), 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 14:59:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 174 transitions. [2024-11-10 14:59:04,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-10 14:59:04,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:04,513 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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 14:59:04,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 14:59:04,717 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,SelfDestructingSolverStorable34 [2024-11-10 14:59:04,718 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:59:04,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1343465155, now seen corresponding path program 3 times [2024-11-10 14:59:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568937485] [2024-11-10 14:59:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568937485] [2024-11-10 14:59:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568937485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894260302] [2024-11-10 14:59:05,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:59:05,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:05,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:05,091 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 14:59:05,098 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 14:59:05,188 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 14:59:05,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:05,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-10 14:59:05,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:05,256 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 14:59:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:05,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:05,332 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 14:59:05,333 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 14:59:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:59:05,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894260302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:05,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:05,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 26 [2024-11-10 14:59:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226835340] [2024-11-10 14:59:05,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:05,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 14:59:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 14:59:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-10 14:59:05,389 INFO L87 Difference]: Start difference. First operand 156 states and 174 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 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 14:59:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:05,691 INFO L93 Difference]: Finished difference Result 259 states and 289 transitions. [2024-11-10 14:59:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 14:59:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 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 40 [2024-11-10 14:59:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:05,692 INFO L225 Difference]: With dead ends: 259 [2024-11-10 14:59:05,692 INFO L226 Difference]: Without dead ends: 233 [2024-11-10 14:59:05,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 14:59:05,693 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 65 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:05,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 387 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:59:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-10 14:59:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 225. [2024-11-10 14:59:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 222 states have (on average 1.1306306306306306) internal successors, (251), 224 states have internal predecessors, (251), 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 14:59:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 251 transitions. [2024-11-10 14:59:05,697 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 251 transitions. Word has length 40 [2024-11-10 14:59:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:05,697 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 251 transitions. [2024-11-10 14:59:05,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 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 14:59:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 251 transitions. [2024-11-10 14:59:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-10 14:59:05,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:05,698 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1] [2024-11-10 14:59:05,720 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 14:59:05,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:05,902 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:59:05,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -821678710, now seen corresponding path program 1 times [2024-11-10 14:59:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079059333] [2024-11-10 14:59:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 14:59:06,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079059333] [2024-11-10 14:59:06,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079059333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919855005] [2024-11-10 14:59:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:06,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:06,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:06,327 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 14:59:06,328 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 14:59:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:06,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 14:59:06,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:06,596 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 14:59:06,633 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 14:59:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 14:59:06,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:06,660 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 13 treesize of output 11 [2024-11-10 14:59:06,662 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 14 treesize of output 12 [2024-11-10 14:59:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 14:59:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919855005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:06,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:06,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-11-10 14:59:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141624110] [2024-11-10 14:59:06,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:06,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 14:59:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 14:59:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-10 14:59:06,832 INFO L87 Difference]: Start difference. First operand 225 states and 251 transitions. Second operand has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 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 14:59:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:07,845 INFO L93 Difference]: Finished difference Result 252 states and 276 transitions. [2024-11-10 14:59:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-10 14:59:07,846 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 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 40 [2024-11-10 14:59:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:07,846 INFO L225 Difference]: With dead ends: 252 [2024-11-10 14:59:07,846 INFO L226 Difference]: Without dead ends: 238 [2024-11-10 14:59:07,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=610, Invalid=2812, Unknown=0, NotChecked=0, Total=3422 [2024-11-10 14:59:07,848 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 98 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:07,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 379 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 14:59:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-10 14:59:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 228. [2024-11-10 14:59:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 1.1155555555555556) internal successors, (251), 227 states have internal predecessors, (251), 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 14:59:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 251 transitions. [2024-11-10 14:59:07,851 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 251 transitions. Word has length 40 [2024-11-10 14:59:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:07,851 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 251 transitions. [2024-11-10 14:59:07,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 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 14:59:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 251 transitions. [2024-11-10 14:59:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 14:59:07,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:07,852 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:07,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:08,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:08,056 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:59:08,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:08,056 INFO L85 PathProgramCache]: Analyzing trace with hash -545809788, now seen corresponding path program 4 times [2024-11-10 14:59:08,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:08,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795446679] [2024-11-10 14:59:08,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:08,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:08,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:08,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795446679] [2024-11-10 14:59:08,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795446679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:08,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031632446] [2024-11-10 14:59:08,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 14:59:08,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:08,495 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 14:59:08,496 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 14:59:08,608 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 14:59:08,609 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:08,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-10 14:59:08,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:08,649 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 [2024-11-10 14:59:09,333 INFO L349 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2024-11-10 14:59:09,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 51 [2024-11-10 14:59:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 14:59:09,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:09,865 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 59 treesize of output 51 [2024-11-10 14:59:09,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2024-11-10 14:59:09,878 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 14:59:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 14:59:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031632446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:09,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2024-11-10 14:59:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887003075] [2024-11-10 14:59:09,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:09,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 14:59:09,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 14:59:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 14:59:09,913 INFO L87 Difference]: Start difference. First operand 228 states and 251 transitions. Second operand has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 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 14:59:11,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:11,190 INFO L93 Difference]: Finished difference Result 296 states and 320 transitions. [2024-11-10 14:59:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-10 14:59:11,191 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 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) Word has length 45 [2024-11-10 14:59:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:11,192 INFO L225 Difference]: With dead ends: 296 [2024-11-10 14:59:11,192 INFO L226 Difference]: Without dead ends: 252 [2024-11-10 14:59:11,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=430, Invalid=2762, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 14:59:11,193 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 70 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:11,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 527 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 14:59:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-10 14:59:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 175. [2024-11-10 14:59:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.1040462427745665) internal successors, (191), 174 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 14:59:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 191 transitions. [2024-11-10 14:59:11,195 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 191 transitions. Word has length 45 [2024-11-10 14:59:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:11,196 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 191 transitions. [2024-11-10 14:59:11,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 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 14:59:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 191 transitions. [2024-11-10 14:59:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 14:59:11,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:11,196 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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 14:59:11,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 14:59:11,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:11,400 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:59:11,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:11,401 INFO L85 PathProgramCache]: Analyzing trace with hash -486361625, now seen corresponding path program 2 times [2024-11-10 14:59:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:11,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624207894] [2024-11-10 14:59:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:11,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624207894] [2024-11-10 14:59:11,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624207894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602935243] [2024-11-10 14:59:11,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:59:11,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:11,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:11,794 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 14:59:11,794 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 14:59:11,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:59:11,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:11,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-10 14:59:11,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:12,163 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 [2024-11-10 14:59:12,318 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-10 14:59:12,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-10 14:59:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 14:59:12,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:12,441 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 29 treesize of output 25 [2024-11-10 14:59:12,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:59:12,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-10 14:59:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 14:59:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602935243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:12,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 38 [2024-11-10 14:59:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169790046] [2024-11-10 14:59:12,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:12,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-10 14:59:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-10 14:59:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 14:59:12,716 INFO L87 Difference]: Start difference. First operand 175 states and 191 transitions. Second operand has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 38 states have internal predecessors, (116), 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 14:59:14,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:14,534 INFO L93 Difference]: Finished difference Result 218 states and 235 transitions. [2024-11-10 14:59:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-10 14:59:14,535 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 38 states have internal predecessors, (116), 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 14:59:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:14,536 INFO L225 Difference]: With dead ends: 218 [2024-11-10 14:59:14,536 INFO L226 Difference]: Without dead ends: 201 [2024-11-10 14:59:14,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=638, Invalid=4332, Unknown=0, NotChecked=0, Total=4970 [2024-11-10 14:59:14,537 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 124 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:14,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 558 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 14:59:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-10 14:59:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 175. [2024-11-10 14:59:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.1040462427745665) internal successors, (191), 174 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 14:59:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 191 transitions. [2024-11-10 14:59:14,542 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 191 transitions. Word has length 47 [2024-11-10 14:59:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:14,542 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 191 transitions. [2024-11-10 14:59:14,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 38 states have internal predecessors, (116), 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 14:59:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 191 transitions. [2024-11-10 14:59:14,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-10 14:59:14,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:14,543 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1] [2024-11-10 14:59:14,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:14,747 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,SelfDestructingSolverStorable38 [2024-11-10 14:59:14,747 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:59:14,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1105175747, now seen corresponding path program 4 times [2024-11-10 14:59:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:14,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950578034] [2024-11-10 14:59:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 14:59:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950578034] [2024-11-10 14:59:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950578034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192506765] [2024-11-10 14:59:14,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 14:59:14,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:14,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:14,938 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 14:59:14,942 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 14:59:15,034 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 14:59:15,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:15,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-10 14:59:15,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:15,072 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 [2024-11-10 14:59:15,617 INFO L349 Elim1Store]: treesize reduction 4, result has 81.8 percent of original size [2024-11-10 14:59:15,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2024-11-10 14:59:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 14:59:15,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:15,994 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 29 treesize of output 25 [2024-11-10 14:59:15,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2024-11-10 14:59:16,003 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 14:59:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 14:59:16,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192506765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:16,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:16,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2024-11-10 14:59:16,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648737793] [2024-11-10 14:59:16,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:16,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 14:59:16,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 14:59:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-11-10 14:59:16,038 INFO L87 Difference]: Start difference. First operand 175 states and 191 transitions. Second operand has 28 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 28 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 14:59:16,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:16,622 INFO L93 Difference]: Finished difference Result 180 states and 194 transitions. [2024-11-10 14:59:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 14:59:16,623 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 28 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) Word has length 48 [2024-11-10 14:59:16,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:16,623 INFO L225 Difference]: With dead ends: 180 [2024-11-10 14:59:16,623 INFO L226 Difference]: Without dead ends: 180 [2024-11-10 14:59:16,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 14:59:16,624 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:16,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 447 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 14:59:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-10 14:59:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2024-11-10 14:59:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.096774193548387) internal successors, (170), 155 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 14:59:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2024-11-10 14:59:16,627 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 48 [2024-11-10 14:59:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:16,627 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2024-11-10 14:59:16,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 28 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 14:59:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2024-11-10 14:59:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-10 14:59:16,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:16,627 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 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 14:59:16,640 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 14:59:16,828 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,SelfDestructingSolverStorable39 [2024-11-10 14:59:16,828 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 14:59:16,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash 935803374, now seen corresponding path program 3 times [2024-11-10 14:59:16,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:16,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287423301] [2024-11-10 14:59:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:16,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:59:17,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287423301] [2024-11-10 14:59:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287423301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575235995] [2024-11-10 14:59:17,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:59:17,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:17,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:17,277 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 14:59:17,278 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 14:59:17,392 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 14:59:17,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:17,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-10 14:59:17,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:17,631 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 [2024-11-10 14:59:30,752 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-10 14:59:30,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 31 [2024-11-10 14:59:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 11 proven. 16 refuted. 7 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-10 14:59:30,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:31,257 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 44 treesize of output 38 [2024-11-10 14:59:31,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2024-11-10 14:59:31,445 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 22 treesize of output 18 [2024-11-10 14:59:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 14:59:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575235995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:31,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:31,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 45 [2024-11-10 14:59:31,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303821466] [2024-11-10 14:59:31,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:31,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-10 14:59:31,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-10 14:59:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1874, Unknown=5, NotChecked=0, Total=2070 [2024-11-10 14:59:31,761 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 46 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 14:59:37,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 14:59:40,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 14:59:44,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:00:00,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:00:05,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:00:07,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:00:14,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:00:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:15,455 INFO L93 Difference]: Finished difference Result 252 states and 276 transitions. [2024-11-10 15:00:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-10 15:00:15,455 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 46 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 54 [2024-11-10 15:00:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:15,456 INFO L225 Difference]: With dead ends: 252 [2024-11-10 15:00:15,456 INFO L226 Difference]: Without dead ends: 240 [2024-11-10 15:00:15,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=629, Invalid=6156, Unknown=21, NotChecked=0, Total=6806 [2024-11-10 15:00:15,458 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 73 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 37 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:15,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 698 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1868 Invalid, 18 Unknown, 0 Unchecked, 29.1s Time] [2024-11-10 15:00:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-10 15:00:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 195. [2024-11-10 15:00:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.1030927835051547) internal successors, (214), 194 states have internal predecessors, (214), 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 15:00:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 214 transitions. [2024-11-10 15:00:15,463 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 214 transitions. Word has length 54 [2024-11-10 15:00:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:15,463 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 214 transitions. [2024-11-10 15:00:15,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 46 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 15:00:15,464 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 214 transitions. [2024-11-10 15:00:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 15:00:15,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:15,465 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:15,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-10 15:00:15,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:15,670 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-10 15:00:15,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:00:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash 660057362, now seen corresponding path program 4 times [2024-11-10 15:00:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:00:15,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640104212] [2024-11-10 15:00:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:00:15,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:00:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:00:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:00:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:00:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640104212] [2024-11-10 15:00:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640104212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:00:16,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749007253] [2024-11-10 15:00:16,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:00:16,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:00:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:00:16,148 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 15:00:16,149 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 15:00:16,282 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:00:16,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:00:16,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 15:00:16,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:00:16,671 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 15:00:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-10 15:00:16,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:00:16,783 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 13 treesize of output 11 [2024-11-10 15:00:16,788 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 14 treesize of output 12 [2024-11-10 15:00:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-10 15:00:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749007253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:00:17,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:00:17,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2024-11-10 15:00:17,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698784834] [2024-11-10 15:00:17,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:00:17,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 15:00:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:00:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 15:00:17,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 15:00:17,130 INFO L87 Difference]: Start difference. First operand 195 states and 214 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 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 15:00:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:00:18,512 INFO L93 Difference]: Finished difference Result 213 states and 230 transitions. [2024-11-10 15:00:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-10 15:00:18,513 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 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 56 [2024-11-10 15:00:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:00:18,513 INFO L225 Difference]: With dead ends: 213 [2024-11-10 15:00:18,513 INFO L226 Difference]: Without dead ends: 185 [2024-11-10 15:00:18,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=785, Invalid=4471, Unknown=0, NotChecked=0, Total=5256 [2024-11-10 15:00:18,515 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 164 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:00:18,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 326 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:00:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-10 15:00:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 178. [2024-11-10 15:00:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.0960451977401129) internal successors, (194), 177 states have internal predecessors, (194), 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 15:00:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2024-11-10 15:00:18,520 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 56 [2024-11-10 15:00:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:00:18,520 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2024-11-10 15:00:18,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 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 15:00:18,520 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2024-11-10 15:00:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-10 15:00:18,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:00:18,522 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:00:18,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0