./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-nested-sll-lst-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-broom/sll-nested-sll-lst-data.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 6c22cd9939cf4e0054fcfe90f9b6c0796fdde4127b9efff81228419797dcb062 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:39:15,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:39:15,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-17 00:39:15,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:39:15,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:39:15,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:39:15,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:39:15,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:39:15,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:39:15,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:39:15,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:39:15,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:39:15,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:39:15,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:39:15,883 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:39:15,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:39:15,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:39:15,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:39:15,884 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:39:15,884 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:39:15,884 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:39:15,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:39:15,885 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:39:15,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:39:15,885 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:39:15,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:39:15,886 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:39:15,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:39:15,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:39:15,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:39:15,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:39:15,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:39:15,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:39:15,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:39:15,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:39:15,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:39:15,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:39:15,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:39:15,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:39:15,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c22cd9939cf4e0054fcfe90f9b6c0796fdde4127b9efff81228419797dcb062 [2024-11-17 00:39:16,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:39:16,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:39:16,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:39:16,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:39:16,114 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:39:16,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-nested-sll-lst-data.i [2024-11-17 00:39:17,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:39:17,598 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:39:17,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-nested-sll-lst-data.i [2024-11-17 00:39:17,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fbe2bb70/aed494f5683d41009783529dcb5e3f19/FLAG6ea805cb3 [2024-11-17 00:39:17,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fbe2bb70/aed494f5683d41009783529dcb5e3f19 [2024-11-17 00:39:17,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:39:17,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:39:17,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:39:17,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:39:17,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:39:17,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:39:17" (1/1) ... [2024-11-17 00:39:17,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b059372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:17, skipping insertion in model container [2024-11-17 00:39:17,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:39:17" (1/1) ... [2024-11-17 00:39:17,979 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:39:18,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:39:18,272 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:39:18,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:39:18,348 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:39:18,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18 WrapperNode [2024-11-17 00:39:18,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:39:18,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:39:18,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:39:18,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:39:18,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,384 INFO L138 Inliner]: procedures = 125, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2024-11-17 00:39:18,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:39:18,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:39:18,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:39:18,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:39:18,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,420 INFO L175 MemorySlicer]: Split 19 memory accesses to 1 slices as follows [19]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 9 writes are split as follows [9]. [2024-11-17 00:39:18,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,427 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:39:18,433 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:39:18,433 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:39:18,433 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:39:18,434 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (1/1) ... [2024-11-17 00:39:18,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:39:18,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:18,465 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) [2024-11-17 00:39:18,467 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 [2024-11-17 00:39:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-17 00:39:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-17 00:39:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure create_internal [2024-11-17 00:39:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure create_internal [2024-11-17 00:39:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:39:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-17 00:39:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-17 00:39:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:39:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 00:39:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 00:39:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:39:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:39:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:39:18,599 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:39:18,601 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:39:18,853 INFO L? ?]: Removed 127 outVars from TransFormulas that were not future-live. [2024-11-17 00:39:18,854 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:39:18,866 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:39:18,868 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:39:18,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:39:18 BoogieIcfgContainer [2024-11-17 00:39:18,868 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:39:18,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:39:18,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:39:18,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:39:18,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:39:17" (1/3) ... [2024-11-17 00:39:18,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bba61fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:39:18, skipping insertion in model container [2024-11-17 00:39:18,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:18" (2/3) ... [2024-11-17 00:39:18,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bba61fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:39:18, skipping insertion in model container [2024-11-17 00:39:18,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:39:18" (3/3) ... [2024-11-17 00:39:18,875 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-nested-sll-lst-data.i [2024-11-17 00:39:18,887 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:39:18,887 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2024-11-17 00:39:18,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:39:18,923 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;@7f62f1c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:39:18,923 INFO L334 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-11-17 00:39:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 77 states have (on average 1.7402597402597402) internal successors, (134), 122 states have internal predecessors, (134), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:39:18,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:18,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:39:18,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:18,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 130748116, now seen corresponding path program 1 times [2024-11-17 00:39:18,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:18,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275755744] [2024-11-17 00:39:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:19,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275755744] [2024-11-17 00:39:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275755744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:19,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:39:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144093764] [2024-11-17 00:39:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:19,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:39:19,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:39:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:19,173 INFO L87 Difference]: Start difference. First operand has 132 states, 77 states have (on average 1.7402597402597402) internal successors, (134), 122 states have internal predecessors, (134), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:39:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:19,288 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2024-11-17 00:39:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:39:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-17 00:39:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:19,297 INFO L225 Difference]: With dead ends: 130 [2024-11-17 00:39:19,297 INFO L226 Difference]: Without dead ends: 127 [2024-11-17 00:39:19,298 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 [2024-11-17 00:39:19,302 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:19,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 219 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-17 00:39:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-17 00:39:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 75 states have (on average 1.64) internal successors, (123), 117 states have internal predecessors, (123), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2024-11-17 00:39:19,332 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 5 [2024-11-17 00:39:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:19,333 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2024-11-17 00:39:19,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:39:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2024-11-17 00:39:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:39:19,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:19,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:39:19,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:39:19,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:19,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 130748117, now seen corresponding path program 1 times [2024-11-17 00:39:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:19,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663919488] [2024-11-17 00:39:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:19,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:19,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663919488] [2024-11-17 00:39:19,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663919488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:19,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:19,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:39:19,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151687493] [2024-11-17 00:39:19,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:19,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:39:19,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:39:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:19,406 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:39:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:19,479 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2024-11-17 00:39:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:39:19,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-17 00:39:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:19,482 INFO L225 Difference]: With dead ends: 125 [2024-11-17 00:39:19,482 INFO L226 Difference]: Without dead ends: 125 [2024-11-17 00:39:19,482 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 [2024-11-17 00:39:19,483 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 2 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:19,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 224 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-17 00:39:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-17 00:39:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 115 states have internal predecessors, (121), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2024-11-17 00:39:19,497 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 5 [2024-11-17 00:39:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:19,497 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2024-11-17 00:39:19,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:39:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2024-11-17 00:39:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:39:19,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:19,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:19,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:39:19,498 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:19,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash 745414892, now seen corresponding path program 1 times [2024-11-17 00:39:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457597434] [2024-11-17 00:39:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:19,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:19,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:19,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457597434] [2024-11-17 00:39:19,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457597434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:19,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:19,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:39:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746770241] [2024-11-17 00:39:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:19,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:39:19,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:39:19,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:19,618 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:19,737 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2024-11-17 00:39:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:39:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-17 00:39:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:19,740 INFO L225 Difference]: With dead ends: 124 [2024-11-17 00:39:19,740 INFO L226 Difference]: Without dead ends: 124 [2024-11-17 00:39:19,740 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 [2024-11-17 00:39:19,741 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:19,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 280 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-17 00:39:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-17 00:39:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 75 states have (on average 1.6) internal successors, (120), 114 states have internal predecessors, (120), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2024-11-17 00:39:19,750 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 14 [2024-11-17 00:39:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:19,754 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2024-11-17 00:39:19,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2024-11-17 00:39:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:39:19,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:19,754 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:19,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:39:19,755 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:19,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash 745414891, now seen corresponding path program 1 times [2024-11-17 00:39:19,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:19,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556015798] [2024-11-17 00:39:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:19,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:19,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:19,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556015798] [2024-11-17 00:39:19,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556015798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:19,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:19,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:39:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340939244] [2024-11-17 00:39:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:19,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:39:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:39:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:19,842 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:19,949 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2024-11-17 00:39:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:39:19,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-17 00:39:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:19,951 INFO L225 Difference]: With dead ends: 123 [2024-11-17 00:39:19,952 INFO L226 Difference]: Without dead ends: 123 [2024-11-17 00:39:19,953 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 [2024-11-17 00:39:19,954 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:19,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 271 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-17 00:39:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-17 00:39:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 75 states have (on average 1.5866666666666667) internal successors, (119), 113 states have internal predecessors, (119), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2024-11-17 00:39:19,964 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 14 [2024-11-17 00:39:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:19,964 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2024-11-17 00:39:19,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2024-11-17 00:39:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 00:39:19,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:19,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:19,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:39:19,967 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting create_internalErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:19,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1729491702, now seen corresponding path program 1 times [2024-11-17 00:39:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824465172] [2024-11-17 00:39:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:20,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824465172] [2024-11-17 00:39:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824465172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:20,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:39:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768815878] [2024-11-17 00:39:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:20,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:39:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:39:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:39:20,097 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:39:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:20,266 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-11-17 00:39:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:39:20,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-17 00:39:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:20,268 INFO L225 Difference]: With dead ends: 126 [2024-11-17 00:39:20,269 INFO L226 Difference]: Without dead ends: 126 [2024-11-17 00:39:20,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:39:20,270 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 14 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:20,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 460 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-17 00:39:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2024-11-17 00:39:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 110 states have internal predecessors, (116), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2024-11-17 00:39:20,281 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 19 [2024-11-17 00:39:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:20,281 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2024-11-17 00:39:20,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:39:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2024-11-17 00:39:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 00:39:20,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:20,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:20,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:39:20,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting create_internalErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:20,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1729491701, now seen corresponding path program 1 times [2024-11-17 00:39:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:20,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032669400] [2024-11-17 00:39:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:20,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032669400] [2024-11-17 00:39:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032669400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:20,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:20,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:39:20,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891473332] [2024-11-17 00:39:20,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:20,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:39:20,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:39:20,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:39:20,495 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:39:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:20,667 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2024-11-17 00:39:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:39:20,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-17 00:39:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:20,668 INFO L225 Difference]: With dead ends: 125 [2024-11-17 00:39:20,669 INFO L226 Difference]: Without dead ends: 125 [2024-11-17 00:39:20,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:39:20,669 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 7 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:20,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 506 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-17 00:39:20,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-11-17 00:39:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 109 states have internal predecessors, (115), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2024-11-17 00:39:20,682 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 19 [2024-11-17 00:39:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:20,682 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2024-11-17 00:39:20,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:39:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2024-11-17 00:39:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-17 00:39:20,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:20,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:20,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 00:39:20,683 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:20,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1088126870, now seen corresponding path program 1 times [2024-11-17 00:39:20,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:20,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755704484] [2024-11-17 00:39:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:20,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:21,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:21,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755704484] [2024-11-17 00:39:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755704484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:21,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:21,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 00:39:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104757887] [2024-11-17 00:39:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:21,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:39:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:39:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:39:21,046 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:21,349 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2024-11-17 00:39:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2024-11-17 00:39:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:21,351 INFO L225 Difference]: With dead ends: 136 [2024-11-17 00:39:21,351 INFO L226 Difference]: Without dead ends: 136 [2024-11-17 00:39:21,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:39:21,352 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:21,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 556 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:39:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-17 00:39:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2024-11-17 00:39:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 86 states have (on average 1.5348837209302326) internal successors, (132), 118 states have internal predecessors, (132), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-17 00:39:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2024-11-17 00:39:21,360 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 26 [2024-11-17 00:39:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:21,361 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2024-11-17 00:39:21,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2024-11-17 00:39:21,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-17 00:39:21,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:21,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:21,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:39:21,362 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:21,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1088126869, now seen corresponding path program 1 times [2024-11-17 00:39:21,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503102995] [2024-11-17 00:39:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:21,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:21,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:21,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:21,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503102995] [2024-11-17 00:39:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503102995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:21,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 00:39:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031746908] [2024-11-17 00:39:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:21,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:39:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:39:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:39:21,748 INFO L87 Difference]: Start difference. First operand 131 states and 148 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:22,002 INFO L93 Difference]: Finished difference Result 147 states and 168 transitions. [2024-11-17 00:39:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2024-11-17 00:39:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:22,004 INFO L225 Difference]: With dead ends: 147 [2024-11-17 00:39:22,004 INFO L226 Difference]: Without dead ends: 147 [2024-11-17 00:39:22,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:39:22,004 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 25 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:22,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 516 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-17 00:39:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2024-11-17 00:39:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 95 states have (on average 1.5052631578947369) internal successors, (143), 127 states have internal predecessors, (143), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-17 00:39:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 164 transitions. [2024-11-17 00:39:22,009 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 164 transitions. Word has length 26 [2024-11-17 00:39:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:22,010 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 164 transitions. [2024-11-17 00:39:22,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 164 transitions. [2024-11-17 00:39:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-17 00:39:22,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:22,011 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:22,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:39:22,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting create_internalErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:22,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1351735108, now seen corresponding path program 1 times [2024-11-17 00:39:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446431815] [2024-11-17 00:39:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 00:39:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:22,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446431815] [2024-11-17 00:39:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446431815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:22,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634952361] [2024-11-17 00:39:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:22,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:22,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:22,231 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) [2024-11-17 00:39:22,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:39:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:39:22,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:22,404 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-17 00:39:22,469 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-17 00:39:22,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-17 00:39:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:22,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:39:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634952361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:22,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:39:22,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-17 00:39:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187614791] [2024-11-17 00:39:22,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:22,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:39:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:39:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-11-17 00:39:22,481 INFO L87 Difference]: Start difference. First operand 142 states and 164 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:39:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:22,581 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2024-11-17 00:39:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:39:22,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-17 00:39:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:22,582 INFO L225 Difference]: With dead ends: 144 [2024-11-17 00:39:22,583 INFO L226 Difference]: Without dead ends: 144 [2024-11-17 00:39:22,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-11-17 00:39:22,583 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 11 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:22,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 249 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 147 Unchecked, 0.1s Time] [2024-11-17 00:39:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-17 00:39:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-17 00:39:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 96 states have (on average 1.5104166666666667) internal successors, (145), 128 states have internal predecessors, (145), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-17 00:39:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2024-11-17 00:39:22,588 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 29 [2024-11-17 00:39:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:22,588 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2024-11-17 00:39:22,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:39:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2024-11-17 00:39:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-17 00:39:22,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:22,589 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:22,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:39:22,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:22,790 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting create_internalErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:22,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1351735109, now seen corresponding path program 1 times [2024-11-17 00:39:22,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:22,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563859765] [2024-11-17 00:39:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:22,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 00:39:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:23,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563859765] [2024-11-17 00:39:23,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563859765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753449768] [2024-11-17 00:39:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:23,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:23,018 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) [2024-11-17 00:39:23,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:39:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:23,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-17 00:39:23,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:23,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:39:23,241 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-17 00:39:23,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:23,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:39:23,284 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:23,285 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 11 treesize of output 11 [2024-11-17 00:39:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-17 00:39:23,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:23,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753449768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:23,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:23,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2024-11-17 00:39:23,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262242186] [2024-11-17 00:39:23,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:23,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 00:39:23,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:23,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 00:39:23,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=258, Unknown=1, NotChecked=32, Total=342 [2024-11-17 00:39:23,444 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-17 00:39:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:23,837 INFO L93 Difference]: Finished difference Result 152 states and 175 transitions. [2024-11-17 00:39:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:23,838 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 29 [2024-11-17 00:39:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:23,840 INFO L225 Difference]: With dead ends: 152 [2024-11-17 00:39:23,840 INFO L226 Difference]: Without dead ends: 152 [2024-11-17 00:39:23,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=462, Unknown=1, NotChecked=44, Total=600 [2024-11-17 00:39:23,841 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 40 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:23,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 859 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 489 Invalid, 0 Unknown, 140 Unchecked, 0.3s Time] [2024-11-17 00:39:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-17 00:39:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2024-11-17 00:39:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.4901960784313726) internal successors, (152), 134 states have internal predecessors, (152), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-17 00:39:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2024-11-17 00:39:23,845 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 29 [2024-11-17 00:39:23,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:23,845 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2024-11-17 00:39:23,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-17 00:39:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2024-11-17 00:39:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-17 00:39:23,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:23,847 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:23,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 00:39:24,050 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,SelfDestructingSolverStorable9 [2024-11-17 00:39:24,051 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting create_internalErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:24,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2042270206, now seen corresponding path program 1 times [2024-11-17 00:39:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:24,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170938286] [2024-11-17 00:39:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:24,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 00:39:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:39:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170938286] [2024-11-17 00:39:24,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170938286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:24,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:24,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:39:24,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205649623] [2024-11-17 00:39:24,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:24,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:39:24,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:24,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:39:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:39:24,158 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-17 00:39:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:24,316 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2024-11-17 00:39:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:39:24,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-17 00:39:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:24,317 INFO L225 Difference]: With dead ends: 149 [2024-11-17 00:39:24,317 INFO L226 Difference]: Without dead ends: 149 [2024-11-17 00:39:24,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:39:24,318 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 5 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:24,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 554 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-17 00:39:24,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-17 00:39:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 133 states have internal predecessors, (150), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-17 00:39:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 173 transitions. [2024-11-17 00:39:24,322 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 173 transitions. Word has length 33 [2024-11-17 00:39:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:24,322 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 173 transitions. [2024-11-17 00:39:24,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-17 00:39:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 173 transitions. [2024-11-17 00:39:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-17 00:39:24,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:24,323 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:24,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 00:39:24,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting create_internalErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:24,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:24,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2042270207, now seen corresponding path program 1 times [2024-11-17 00:39:24,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:24,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642378442] [2024-11-17 00:39:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 00:39:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642378442] [2024-11-17 00:39:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642378442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:24,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:24,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:39:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951040866] [2024-11-17 00:39:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:24,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:39:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:39:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:39:24,506 INFO L87 Difference]: Start difference. First operand 149 states and 173 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-17 00:39:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:24,658 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2024-11-17 00:39:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:39:24,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-17 00:39:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:24,660 INFO L225 Difference]: With dead ends: 148 [2024-11-17 00:39:24,660 INFO L226 Difference]: Without dead ends: 148 [2024-11-17 00:39:24,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:39:24,661 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 4 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:24,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 590 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-17 00:39:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-17 00:39:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 102 states have (on average 1.4509803921568627) internal successors, (148), 132 states have internal predecessors, (148), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-17 00:39:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2024-11-17 00:39:24,665 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 33 [2024-11-17 00:39:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:24,665 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2024-11-17 00:39:24,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-17 00:39:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2024-11-17 00:39:24,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-17 00:39:24,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:24,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:24,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 00:39:24,666 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:24,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1082359024, now seen corresponding path program 1 times [2024-11-17 00:39:24,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170468678] [2024-11-17 00:39:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:24,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:24,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170468678] [2024-11-17 00:39:24,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170468678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:24,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:24,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:39:24,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320310281] [2024-11-17 00:39:24,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:24,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:39:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:39:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:39:24,743 INFO L87 Difference]: Start difference. First operand 148 states and 171 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:24,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:24,900 INFO L93 Difference]: Finished difference Result 169 states and 203 transitions. [2024-11-17 00:39:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:39:24,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-11-17 00:39:24,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:24,901 INFO L225 Difference]: With dead ends: 169 [2024-11-17 00:39:24,902 INFO L226 Difference]: Without dead ends: 169 [2024-11-17 00:39:24,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:39:24,902 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 29 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:24,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 449 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-17 00:39:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2024-11-17 00:39:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 146 states have internal predecessors, (174), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 200 transitions. [2024-11-17 00:39:24,907 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 200 transitions. Word has length 34 [2024-11-17 00:39:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:24,907 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 200 transitions. [2024-11-17 00:39:24,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 200 transitions. [2024-11-17 00:39:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-17 00:39:24,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:24,908 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:24,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 00:39:24,908 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:24,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1082359025, now seen corresponding path program 1 times [2024-11-17 00:39:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658084971] [2024-11-17 00:39:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:24,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:25,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:25,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658084971] [2024-11-17 00:39:25,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658084971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:25,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:25,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:39:25,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34473412] [2024-11-17 00:39:25,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:25,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:39:25,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:39:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:39:25,085 INFO L87 Difference]: Start difference. First operand 164 states and 200 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:25,262 INFO L93 Difference]: Finished difference Result 181 states and 217 transitions. [2024-11-17 00:39:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-11-17 00:39:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:25,264 INFO L225 Difference]: With dead ends: 181 [2024-11-17 00:39:25,264 INFO L226 Difference]: Without dead ends: 181 [2024-11-17 00:39:25,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:39:25,264 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 24 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:25,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 768 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-17 00:39:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2024-11-17 00:39:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.4580152671755726) internal successors, (191), 159 states have internal predecessors, (191), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 217 transitions. [2024-11-17 00:39:25,269 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 217 transitions. Word has length 34 [2024-11-17 00:39:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:25,270 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 217 transitions. [2024-11-17 00:39:25,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 217 transitions. [2024-11-17 00:39:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-17 00:39:25,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:25,272 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:25,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 00:39:25,272 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:25,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2058216305, now seen corresponding path program 1 times [2024-11-17 00:39:25,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903901466] [2024-11-17 00:39:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:25,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:25,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903901466] [2024-11-17 00:39:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903901466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:25,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:39:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922501916] [2024-11-17 00:39:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:25,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:39:25,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:39:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:39:25,394 INFO L87 Difference]: Start difference. First operand 177 states and 217 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:25,498 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2024-11-17 00:39:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:25,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2024-11-17 00:39:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:25,500 INFO L225 Difference]: With dead ends: 190 [2024-11-17 00:39:25,500 INFO L226 Difference]: Without dead ends: 190 [2024-11-17 00:39:25,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:39:25,501 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 29 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:25,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 806 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-17 00:39:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2024-11-17 00:39:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 133 states have (on average 1.4360902255639099) internal successors, (191), 161 states have internal predecessors, (191), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 217 transitions. [2024-11-17 00:39:25,507 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 217 transitions. Word has length 37 [2024-11-17 00:39:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:25,508 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 217 transitions. [2024-11-17 00:39:25,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 217 transitions. [2024-11-17 00:39:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 00:39:25,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:25,509 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:25,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 00:39:25,511 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:25,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash -839980271, now seen corresponding path program 1 times [2024-11-17 00:39:25,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:25,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521029458] [2024-11-17 00:39:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:25,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:25,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521029458] [2024-11-17 00:39:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521029458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:25,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:25,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-17 00:39:25,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592224013] [2024-11-17 00:39:25,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:25,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:39:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:39:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:39:25,927 INFO L87 Difference]: Start difference. First operand 179 states and 217 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:26,385 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2024-11-17 00:39:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:39:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-17 00:39:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:26,387 INFO L225 Difference]: With dead ends: 200 [2024-11-17 00:39:26,387 INFO L226 Difference]: Without dead ends: 200 [2024-11-17 00:39:26,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:39:26,387 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 36 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:26,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1093 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:39:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-17 00:39:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2024-11-17 00:39:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 143 states have (on average 1.4195804195804196) internal successors, (203), 171 states have internal predecessors, (203), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 229 transitions. [2024-11-17 00:39:26,393 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 229 transitions. Word has length 39 [2024-11-17 00:39:26,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:26,393 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 229 transitions. [2024-11-17 00:39:26,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 229 transitions. [2024-11-17 00:39:26,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 00:39:26,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:26,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:26,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 00:39:26,395 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:26,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash -839980270, now seen corresponding path program 1 times [2024-11-17 00:39:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122646841] [2024-11-17 00:39:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:26,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122646841] [2024-11-17 00:39:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122646841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:26,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-17 00:39:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594853417] [2024-11-17 00:39:26,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:26,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:39:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:39:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:39:26,894 INFO L87 Difference]: Start difference. First operand 189 states and 229 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:27,292 INFO L93 Difference]: Finished difference Result 200 states and 238 transitions. [2024-11-17 00:39:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:39:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-17 00:39:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:27,293 INFO L225 Difference]: With dead ends: 200 [2024-11-17 00:39:27,294 INFO L226 Difference]: Without dead ends: 200 [2024-11-17 00:39:27,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:39:27,294 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 35 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:27,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1175 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:39:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-17 00:39:27,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2024-11-17 00:39:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 171 states have internal predecessors, (202), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:27,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2024-11-17 00:39:27,300 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 39 [2024-11-17 00:39:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:27,300 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2024-11-17 00:39:27,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2024-11-17 00:39:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-17 00:39:27,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:27,301 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:27,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 00:39:27,301 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:27,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:27,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1117478332, now seen corresponding path program 1 times [2024-11-17 00:39:27,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:27,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96538531] [2024-11-17 00:39:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:27,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96538531] [2024-11-17 00:39:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96538531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:27,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393599286] [2024-11-17 00:39:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:27,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:27,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:27,932 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) [2024-11-17 00:39:27,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:39:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-17 00:39:28,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:28,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:39:28,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:39:28,191 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 33 treesize of output 15 [2024-11-17 00:39:28,294 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2024-11-17 00:39:28,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 19 [2024-11-17 00:39:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:39:28,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:28,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393599286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:28,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:28,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2024-11-17 00:39:28,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483103579] [2024-11-17 00:39:28,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:28,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 00:39:28,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:28,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 00:39:28,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=597, Unknown=4, NotChecked=0, Total=756 [2024-11-17 00:39:28,593 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 18 states have internal predecessors, (57), 6 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-17 00:39:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:29,321 INFO L93 Difference]: Finished difference Result 207 states and 256 transitions. [2024-11-17 00:39:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 00:39:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 18 states have internal predecessors, (57), 6 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 42 [2024-11-17 00:39:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:29,322 INFO L225 Difference]: With dead ends: 207 [2024-11-17 00:39:29,323 INFO L226 Difference]: Without dead ends: 207 [2024-11-17 00:39:29,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=1047, Unknown=4, NotChecked=0, Total=1332 [2024-11-17 00:39:29,324 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 54 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 34 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:29,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1064 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 869 Invalid, 36 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:39:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-17 00:39:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 196. [2024-11-17 00:39:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 149 states have (on average 1.4093959731543624) internal successors, (210), 177 states have internal predecessors, (210), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2024-11-17 00:39:29,348 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 42 [2024-11-17 00:39:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:29,348 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2024-11-17 00:39:29,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 18 states have internal predecessors, (57), 6 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-17 00:39:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2024-11-17 00:39:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-17 00:39:29,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:29,349 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:29,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 00:39:29,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 00:39:29,550 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:29,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1117478331, now seen corresponding path program 1 times [2024-11-17 00:39:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227894720] [2024-11-17 00:39:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:29,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:30,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227894720] [2024-11-17 00:39:30,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227894720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718034630] [2024-11-17 00:39:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:30,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:30,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:30,274 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) [2024-11-17 00:39:30,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:39:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-17 00:39:30,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:30,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:39:30,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:39:30,490 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1)))) is different from true [2024-11-17 00:39:30,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:39:30,659 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 47 treesize of output 23 [2024-11-17 00:39:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:30,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:30,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2024-11-17 00:39:30,775 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-17 00:39:30,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2024-11-17 00:39:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2024-11-17 00:39:30,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718034630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:30,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:30,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2024-11-17 00:39:30,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867437272] [2024-11-17 00:39:30,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:30,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 00:39:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:30,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 00:39:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=515, Unknown=1, NotChecked=46, Total=650 [2024-11-17 00:39:30,942 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand has 24 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 18 states have internal predecessors, (62), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:39:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:31,574 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2024-11-17 00:39:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 00:39:31,575 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 18 states have internal predecessors, (62), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 42 [2024-11-17 00:39:31,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:31,576 INFO L225 Difference]: With dead ends: 217 [2024-11-17 00:39:31,576 INFO L226 Difference]: Without dead ends: 217 [2024-11-17 00:39:31,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=746, Unknown=1, NotChecked=56, Total=930 [2024-11-17 00:39:31,577 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 46 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:31,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 737 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 585 Invalid, 0 Unknown, 166 Unchecked, 0.4s Time] [2024-11-17 00:39:31,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-17 00:39:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 199. [2024-11-17 00:39:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 152 states have (on average 1.4013157894736843) internal successors, (213), 180 states have internal predecessors, (213), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 243 transitions. [2024-11-17 00:39:31,582 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 243 transitions. Word has length 42 [2024-11-17 00:39:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:31,583 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 243 transitions. [2024-11-17 00:39:31,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 18 states have internal predecessors, (62), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:39:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 243 transitions. [2024-11-17 00:39:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 00:39:31,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:31,585 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:31,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 00:39:31,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:31,790 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:31,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1528822303, now seen corresponding path program 1 times [2024-11-17 00:39:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:31,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474728040] [2024-11-17 00:39:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:31,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474728040] [2024-11-17 00:39:32,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474728040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257545003] [2024-11-17 00:39:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:32,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:32,760 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) [2024-11-17 00:39:32,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:39:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-17 00:39:32,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:33,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2024-11-17 00:39:33,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-17 00:39:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:33,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:39:33,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257545003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:33,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:39:33,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 32 [2024-11-17 00:39:33,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884244692] [2024-11-17 00:39:33,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:33,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:39:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:39:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2024-11-17 00:39:33,203 INFO L87 Difference]: Start difference. First operand 199 states and 243 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:39:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:33,402 INFO L93 Difference]: Finished difference Result 207 states and 248 transitions. [2024-11-17 00:39:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:39:33,404 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-17 00:39:33,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:33,404 INFO L225 Difference]: With dead ends: 207 [2024-11-17 00:39:33,405 INFO L226 Difference]: Without dead ends: 207 [2024-11-17 00:39:33,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 00:39:33,405 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 43 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:33,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1138 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:33,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-17 00:39:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2024-11-17 00:39:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 154 states have (on average 1.3896103896103895) internal successors, (214), 182 states have internal predecessors, (214), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 244 transitions. [2024-11-17 00:39:33,412 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 244 transitions. Word has length 43 [2024-11-17 00:39:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:33,412 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 244 transitions. [2024-11-17 00:39:33,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:39:33,412 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 244 transitions. [2024-11-17 00:39:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-17 00:39:33,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:33,413 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-17 00:39:33,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 00:39:33,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:33,615 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting create_internalErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:33,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1179308246, now seen corresponding path program 1 times [2024-11-17 00:39:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299164366] [2024-11-17 00:39:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 00:39:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-17 00:39:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:39:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:34,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299164366] [2024-11-17 00:39:34,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299164366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523819119] [2024-11-17 00:39:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:34,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:34,007 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) [2024-11-17 00:39:34,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:39:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 00:39:34,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:34,172 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:34,172 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 11 treesize of output 11 [2024-11-17 00:39:34,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2024-11-17 00:39:34,231 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 00:39:34,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-17 00:39:34,239 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 31 treesize of output 13 [2024-11-17 00:39:34,249 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1))) is different from true [2024-11-17 00:39:34,262 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-17 00:39:34,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-17 00:39:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2024-11-17 00:39:34,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:34,376 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-17 00:39:34,376 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 21 treesize of output 20 [2024-11-17 00:39:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:34,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523819119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:39:34,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:39:34,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 12] total 26 [2024-11-17 00:39:34,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445068496] [2024-11-17 00:39:34,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:34,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-17 00:39:34,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:34,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-17 00:39:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=566, Unknown=13, NotChecked=48, Total=702 [2024-11-17 00:39:34,482 INFO L87 Difference]: Start difference. First operand 201 states and 244 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 21 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-17 00:39:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:35,046 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2024-11-17 00:39:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 00:39:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 21 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 45 [2024-11-17 00:39:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:35,048 INFO L225 Difference]: With dead ends: 200 [2024-11-17 00:39:35,048 INFO L226 Difference]: Without dead ends: 200 [2024-11-17 00:39:35,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1148, Unknown=13, NotChecked=70, Total=1406 [2024-11-17 00:39:35,049 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 94 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:35,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1266 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 686 Invalid, 0 Unknown, 127 Unchecked, 0.3s Time] [2024-11-17 00:39:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-17 00:39:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-11-17 00:39:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 154 states have (on average 1.3831168831168832) internal successors, (213), 181 states have internal predecessors, (213), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2024-11-17 00:39:35,053 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 45 [2024-11-17 00:39:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:35,053 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2024-11-17 00:39:35,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 21 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-17 00:39:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2024-11-17 00:39:35,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-17 00:39:35,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:35,054 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-17 00:39:35,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:39:35,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:35,259 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting create_internalErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:35,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1179308245, now seen corresponding path program 1 times [2024-11-17 00:39:35,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:35,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510933546] [2024-11-17 00:39:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:35,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 00:39:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-17 00:39:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:39:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510933546] [2024-11-17 00:39:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510933546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69280369] [2024-11-17 00:39:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:35,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:35,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:35,814 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) [2024-11-17 00:39:35,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:39:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-17 00:39:35,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:35,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:39:36,067 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:36,068 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 11 treesize of output 11 [2024-11-17 00:39:36,104 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 [2024-11-17 00:39:36,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2024-11-17 00:39:36,191 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 00:39:36,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-17 00:39:36,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-17 00:39:36,248 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 42 treesize of output 18 [2024-11-17 00:39:36,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-17 00:39:36,343 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-17 00:39:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:36,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:39:36,365 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:36,365 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 11 treesize of output 11 [2024-11-17 00:39:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-17 00:39:36,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:36,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69280369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:36,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 30 [2024-11-17 00:39:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340059428] [2024-11-17 00:39:36,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:36,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 00:39:36,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 00:39:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=899, Unknown=1, NotChecked=60, Total=1056 [2024-11-17 00:39:36,472 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-17 00:39:37,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:37,066 INFO L93 Difference]: Finished difference Result 197 states and 240 transitions. [2024-11-17 00:39:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 00:39:37,076 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2024-11-17 00:39:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:37,077 INFO L225 Difference]: With dead ends: 197 [2024-11-17 00:39:37,077 INFO L226 Difference]: Without dead ends: 197 [2024-11-17 00:39:37,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=1469, Unknown=1, NotChecked=78, Total=1722 [2024-11-17 00:39:37,078 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 50 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:37,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1411 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1030 Invalid, 0 Unknown, 131 Unchecked, 0.4s Time] [2024-11-17 00:39:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-17 00:39:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-17 00:39:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 154 states have (on average 1.3636363636363635) internal successors, (210), 178 states have internal predecessors, (210), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 240 transitions. [2024-11-17 00:39:37,086 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 240 transitions. Word has length 45 [2024-11-17 00:39:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:37,086 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 240 transitions. [2024-11-17 00:39:37,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-17 00:39:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 240 transitions. [2024-11-17 00:39:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-17 00:39:37,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:37,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:37,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 00:39:37,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:37,292 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-17 00:39:37,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash -668129531, now seen corresponding path program 1 times [2024-11-17 00:39:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:37,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516224586] [2024-11-17 00:39:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:38,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:38,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:38,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516224586] [2024-11-17 00:39:38,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516224586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:38,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363294348] [2024-11-17 00:39:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:38,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:38,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:38,356 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) [2024-11-17 00:39:38,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:39:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:38,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-17 00:39:38,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:38,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:39:38,626 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 [2024-11-17 00:39:38,630 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 [2024-11-17 00:39:38,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:38,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 00:39:38,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:38,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 00:39:38,893 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:38,893 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 11 treesize of output 11 [2024-11-17 00:39:38,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2024-11-17 00:39:38,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-17 00:39:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:39,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:39,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:39:39,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 20931 treesize of output 18556 [2024-11-17 00:39:40,146 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:39:41,154 INFO L349 Elim1Store]: treesize reduction 632, result has 44.4 percent of original size [2024-11-17 00:39:41,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 17 new quantified variables, introduced 105 case distinctions, treesize of input 42097 treesize of output 39946