./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1dc3813f801c08c10697b6f3aeaa3afb846521f0bb73d940036cc656d8340c66 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:58:31,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:58:31,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 14:58:31,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:58:31,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:58:31,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:58:31,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:58:31,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:58:31,512 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 14:58:31,513 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 14:58:31,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:58:31,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:58:31,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:58:31,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:58:31,515 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:58:31,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:58:31,516 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:58:31,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:58:31,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:58:31,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:58:31,517 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 14:58:31,517 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 14:58:31,518 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 14:58:31,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:58:31,518 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 14:58:31,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:58:31,519 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:58:31,519 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:58:31,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:58:31,520 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:58:31,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:58:31,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 14:58:31,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:58:31,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:31,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:58:31,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:58:31,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:58:31,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:58:31,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:58:31,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:58:31,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:58:31,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:58:31,524 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dc3813f801c08c10697b6f3aeaa3afb846521f0bb73d940036cc656d8340c66 [2024-11-10 14:58:31,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:58:31,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:58:31,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:58:31,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:58:31,743 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:58:31,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2024-11-10 14:58:32,956 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:58:33,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:58:33,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-2.i [2024-11-10 14:58:33,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1a36840/df0f4948fd394e21b0b7944e7801148f/FLAG6374b7d53 [2024-11-10 14:58:33,135 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b1a36840/df0f4948fd394e21b0b7944e7801148f [2024-11-10 14:58:33,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:58:33,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:58:33,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:33,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:58:33,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:58:33,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104cfc76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33, skipping insertion in model container [2024-11-10 14:58:33,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:58:33,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:33,329 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:58:33,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:33,357 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:58:33,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33 WrapperNode [2024-11-10 14:58:33,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:33,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:33,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:58:33,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:58:33,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,384 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-10 14:58:33,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:33,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:58:33,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:58:33,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:58:33,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,413 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 2, 4]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-10 14:58:33,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,418 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:58:33,426 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:58:33,428 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:58:33,428 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:58:33,429 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (1/1) ... [2024-11-10 14:58:33,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:33,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:33,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 14:58:33,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 14:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:58:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 14:58:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 14:58:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 14:58:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 14:58:33,551 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:58:33,553 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:58:33,704 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#src~0#1.base, main_~#src~0#1.offset);havoc main_~#src~0#1.base, main_~#src~0#1.offset;call ULTIMATE.dealloc(main_~#dst~0#1.base, main_~#dst~0#1.offset);havoc main_~#dst~0#1.base, main_~#dst~0#1.offset; [2024-11-10 14:58:33,713 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-10 14:58:33,726 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:58:33,739 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:58:33,740 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:58:33,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:33 BoogieIcfgContainer [2024-11-10 14:58:33,740 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:58:33,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:58:33,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:58:33,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:58:33,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:58:33" (1/3) ... [2024-11-10 14:58:33,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e6243c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:33, skipping insertion in model container [2024-11-10 14:58:33,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:33" (2/3) ... [2024-11-10 14:58:33,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e6243c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:33, skipping insertion in model container [2024-11-10 14:58:33,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:33" (3/3) ... [2024-11-10 14:58:33,753 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-2.i [2024-11-10 14:58:33,766 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:58:33,766 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-10 14:58:33,799 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:58:33,804 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;@42a38ac2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:58:33,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-10 14:58:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-10 14:58:33,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:33,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 14:58:33,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:33,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 80128814, now seen corresponding path program 1 times [2024-11-10 14:58:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:33,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980016507] [2024-11-10 14:58:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:34,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980016507] [2024-11-10 14:58:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980016507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:34,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:34,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:34,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285400742] [2024-11-10 14:58:34,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:34,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:34,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:34,046 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:34,132 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-10 14:58:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:34,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-10 14:58:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:34,141 INFO L225 Difference]: With dead ends: 40 [2024-11-10 14:58:34,141 INFO L226 Difference]: Without dead ends: 37 [2024-11-10 14:58:34,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:34,147 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 28 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:34,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 31 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-10 14:58:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-10 14:58:34,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-11-10 14:58:34,174 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 5 [2024-11-10 14:58:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:34,174 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-11-10 14:58:34,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-11-10 14:58:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-10 14:58:34,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:34,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 14:58:34,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:58:34,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:34,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash 80128815, now seen corresponding path program 1 times [2024-11-10 14:58:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943083010] [2024-11-10 14:58:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:34,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943083010] [2024-11-10 14:58:34,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943083010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:34,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:34,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:34,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031050121] [2024-11-10 14:58:34,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:34,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:34,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:34,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:34,309 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:34,350 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2024-11-10 14:58:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:34,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-10 14:58:34,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:34,351 INFO L225 Difference]: With dead ends: 41 [2024-11-10 14:58:34,351 INFO L226 Difference]: Without dead ends: 41 [2024-11-10 14:58:34,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:34,352 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:34,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-10 14:58:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-10 14:58:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.4) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-11-10 14:58:34,359 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 5 [2024-11-10 14:58:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:34,359 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-11-10 14:58:34,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-11-10 14:58:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:34,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:34,360 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 14:58:34,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:58:34,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:34,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:34,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1643667887, now seen corresponding path program 1 times [2024-11-10 14:58:34,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:34,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862502110] [2024-11-10 14:58:34,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:34,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:34,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:34,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862502110] [2024-11-10 14:58:34,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862502110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:34,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040293220] [2024-11-10 14:58:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:34,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:34,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:34,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:34,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 14:58:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:34,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 14:58:34,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:34,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 14:58:34,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:58:34,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-10 14:58:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:34,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040293220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:34,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:34,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 14:58:34,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701687696] [2024-11-10 14:58:34,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:34,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 14:58:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 14:58:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 14:58:34,756 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:34,842 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2024-11-10 14:58:34,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:34,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-10 14:58:34,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:34,845 INFO L225 Difference]: With dead ends: 51 [2024-11-10 14:58:34,845 INFO L226 Difference]: Without dead ends: 51 [2024-11-10 14:58:34,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:34,846 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:34,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 78 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-10 14:58:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-10 14:58:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-10 14:58:34,852 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 9 [2024-11-10 14:58:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:34,852 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-10 14:58:34,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-10 14:58:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-10 14:58:34,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:34,854 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:34,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:35,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:35,055 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:35,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:35,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1957358832, now seen corresponding path program 1 times [2024-11-10 14:58:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:35,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615027893] [2024-11-10 14:58:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:35,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615027893] [2024-11-10 14:58:35,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615027893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:35,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947923560] [2024-11-10 14:58:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:35,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:35,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:35,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:35,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 14:58:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:35,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:58:35,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:35,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947923560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:35,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:35,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-10 14:58:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770149533] [2024-11-10 14:58:35,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:35,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 14:58:35,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 14:58:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:58:35,288 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:35,455 INFO L93 Difference]: Finished difference Result 190 states and 216 transitions. [2024-11-10 14:58:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 14:58:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-10 14:58:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:35,457 INFO L225 Difference]: With dead ends: 190 [2024-11-10 14:58:35,457 INFO L226 Difference]: Without dead ends: 190 [2024-11-10 14:58:35,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-10 14:58:35,458 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 410 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:35,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 122 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-10 14:58:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 60. [2024-11-10 14:58:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-10 14:58:35,464 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 15 [2024-11-10 14:58:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:35,464 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-10 14:58:35,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-10 14:58:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:35,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:35,465 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1] [2024-11-10 14:58:35,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:35,665 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,SelfDestructingSolverStorable3 [2024-11-10 14:58:35,666 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:35,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1090637385, now seen corresponding path program 2 times [2024-11-10 14:58:35,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:35,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462637446] [2024-11-10 14:58:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:35,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462637446] [2024-11-10 14:58:35,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462637446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474708246] [2024-11-10 14:58:35,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:35,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:35,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 14:58:35,864 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:58:35,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:35,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 14:58:35,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:35,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 14:58:35,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:58:35,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-10 14:58:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474708246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:36,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:36,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-10 14:58:36,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544211136] [2024-11-10 14:58:36,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:36,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 14:58:36,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:36,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 14:58:36,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:36,254 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:36,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:36,488 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-10 14:58:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 14:58:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-10 14:58:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:36,491 INFO L225 Difference]: With dead ends: 77 [2024-11-10 14:58:36,491 INFO L226 Difference]: Without dead ends: 77 [2024-11-10 14:58:36,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2024-11-10 14:58:36,492 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:36,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 156 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-10 14:58:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-10 14:58:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-10 14:58:36,497 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 21 [2024-11-10 14:58:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:36,498 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-10 14:58:36,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-10 14:58:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 14:58:36,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:36,501 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:36,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 14:58:36,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:36,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:36,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1420843540, now seen corresponding path program 1 times [2024-11-10 14:58:36,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:36,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376826621] [2024-11-10 14:58:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:36,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 14:58:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376826621] [2024-11-10 14:58:36,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376826621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:36,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:36,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159321435] [2024-11-10 14:58:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:36,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:36,762 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:36,776 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-10 14:58:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-10 14:58:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:36,777 INFO L225 Difference]: With dead ends: 75 [2024-11-10 14:58:36,777 INFO L226 Difference]: Without dead ends: 75 [2024-11-10 14:58:36,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:36,778 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:36,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-10 14:58:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-10 14:58:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 74 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2024-11-10 14:58:36,781 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 34 [2024-11-10 14:58:36,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:36,781 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2024-11-10 14:58:36,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:36,782 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2024-11-10 14:58:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 14:58:36,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:36,782 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:36,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:58:36,783 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:36,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1420843539, now seen corresponding path program 1 times [2024-11-10 14:58:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074725611] [2024-11-10 14:58:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074725611] [2024-11-10 14:58:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074725611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239702695] [2024-11-10 14:58:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:36,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:36,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:36,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:36,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 14:58:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:58:36,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:37,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239702695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:37,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:37,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-10 14:58:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193040961] [2024-11-10 14:58:37,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:37,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 14:58:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:37,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 14:58:37,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:37,072 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:37,234 INFO L93 Difference]: Finished difference Result 368 states and 428 transitions. [2024-11-10 14:58:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 14:58:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-10 14:58:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:37,236 INFO L225 Difference]: With dead ends: 368 [2024-11-10 14:58:37,236 INFO L226 Difference]: Without dead ends: 368 [2024-11-10 14:58:37,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:37,237 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 444 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:37,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 307 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-10 14:58:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 90. [2024-11-10 14:58:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.144578313253012) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2024-11-10 14:58:37,245 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 34 [2024-11-10 14:58:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:37,245 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2024-11-10 14:58:37,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2024-11-10 14:58:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 14:58:37,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:37,247 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1] [2024-11-10 14:58:37,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 14:58:37,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:37,447 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:37,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash -363782781, now seen corresponding path program 3 times [2024-11-10 14:58:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661156938] [2024-11-10 14:58:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:37,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661156938] [2024-11-10 14:58:37,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661156938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117333658] [2024-11-10 14:58:37,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:58:37,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:37,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:37,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:37,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 14:58:37,817 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 14:58:37,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:37,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 14:58:37,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:37,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 14:58:37,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 14:58:37,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-10 14:58:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-10 14:58:38,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117333658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:38,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:38,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2024-11-10 14:58:38,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830504645] [2024-11-10 14:58:38,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:38,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:58:38,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:38,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:58:38,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:38,050 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:38,100 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2024-11-10 14:58:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-10 14:58:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:38,103 INFO L225 Difference]: With dead ends: 106 [2024-11-10 14:58:38,103 INFO L226 Difference]: Without dead ends: 106 [2024-11-10 14:58:38,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:38,104 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 65 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:38,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-10 14:58:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2024-11-10 14:58:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2024-11-10 14:58:38,112 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 45 [2024-11-10 14:58:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:38,112 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2024-11-10 14:58:38,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2024-11-10 14:58:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-10 14:58:38,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:38,114 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:38,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 14:58:38,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:38,316 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:38,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash -589921571, now seen corresponding path program 2 times [2024-11-10 14:58:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:38,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058946300] [2024-11-10 14:58:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058946300] [2024-11-10 14:58:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058946300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828776890] [2024-11-10 14:58:38,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:38,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:38,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:38,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:38,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 14:58:38,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 14:58:38,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:38,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 14:58:38,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:38,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 14:58:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-10 14:58:38,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:58:38,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828776890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:38,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:58:38,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [17] total 19 [2024-11-10 14:58:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902425243] [2024-11-10 14:58:38,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:38,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2024-11-10 14:58:38,830 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:38,858 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2024-11-10 14:58:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-10 14:58:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:38,859 INFO L225 Difference]: With dead ends: 106 [2024-11-10 14:58:38,859 INFO L226 Difference]: Without dead ends: 106 [2024-11-10 14:58:38,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2024-11-10 14:58:38,860 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 57 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:38,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 34 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-10 14:58:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2024-11-10 14:58:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.1046511627906976) internal successors, (95), 91 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2024-11-10 14:58:38,863 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 66 [2024-11-10 14:58:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:38,863 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2024-11-10 14:58:38,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2024-11-10 14:58:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-10 14:58:38,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:38,865 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:38,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 14:58:39,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:39,066 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:39,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash 19975865, now seen corresponding path program 1 times [2024-11-10 14:58:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561398691] [2024-11-10 14:58:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:39,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-10 14:58:39,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561398691] [2024-11-10 14:58:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561398691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:39,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:39,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 14:58:39,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378899076] [2024-11-10 14:58:39,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:39,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:39,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:39,140 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:39,158 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2024-11-10 14:58:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:39,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-10 14:58:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:39,159 INFO L225 Difference]: With dead ends: 96 [2024-11-10 14:58:39,160 INFO L226 Difference]: Without dead ends: 96 [2024-11-10 14:58:39,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:39,161 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:39,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-10 14:58:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2024-11-10 14:58:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.101123595505618) internal successors, (98), 94 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2024-11-10 14:58:39,163 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 68 [2024-11-10 14:58:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:39,164 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2024-11-10 14:58:39,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2024-11-10 14:58:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-10 14:58:39,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:39,165 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:39,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 14:58:39,165 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:39,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash 652622176, now seen corresponding path program 1 times [2024-11-10 14:58:39,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:39,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51649069] [2024-11-10 14:58:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:39,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51649069] [2024-11-10 14:58:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51649069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913870236] [2024-11-10 14:58:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:39,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:39,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:39,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:39,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 14:58:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:39,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 14:58:39,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:39,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:39,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913870236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:39,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:39,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-10 14:58:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363635922] [2024-11-10 14:58:39,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:39,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 14:58:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:39,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 14:58:39,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 14:58:39,845 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 33 states, 33 states have (on average 4.0) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:40,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:40,183 INFO L93 Difference]: Finished difference Result 740 states and 859 transitions. [2024-11-10 14:58:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 14:58:40,183 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-10 14:58:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:40,185 INFO L225 Difference]: With dead ends: 740 [2024-11-10 14:58:40,185 INFO L226 Difference]: Without dead ends: 740 [2024-11-10 14:58:40,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 14:58:40,186 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1356 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:40,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 550 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:58:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-10 14:58:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 159. [2024-11-10 14:58:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 1.0588235294117647) internal successors, (162), 158 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2024-11-10 14:58:40,191 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 69 [2024-11-10 14:58:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:40,191 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2024-11-10 14:58:40,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0) internal successors, (132), 33 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2024-11-10 14:58:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-10 14:58:40,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:40,193 INFO L215 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:40,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:40,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:40,394 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:40,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1676741760, now seen corresponding path program 2 times [2024-11-10 14:58:40,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:40,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914026420] [2024-11-10 14:58:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:40,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:41,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914026420] [2024-11-10 14:58:41,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914026420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:41,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743109864] [2024-11-10 14:58:41,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:41,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:41,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:41,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:41,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 14:58:41,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:58:41,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:41,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 14:58:41,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:41,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743109864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:42,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:42,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2024-11-10 14:58:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407342751] [2024-11-10 14:58:42,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:42,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-10 14:58:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-10 14:58:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-10 14:58:42,304 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 65 states, 65 states have (on average 4.0) internal successors, (260), 65 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:43,730 INFO L93 Difference]: Finished difference Result 1508 states and 1755 transitions. [2024-11-10 14:58:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-10 14:58:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.0) internal successors, (260), 65 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-10 14:58:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:43,734 INFO L225 Difference]: With dead ends: 1508 [2024-11-10 14:58:43,734 INFO L226 Difference]: Without dead ends: 1508 [2024-11-10 14:58:43,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-10 14:58:43,735 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4568 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:43,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4568 Valid, 1123 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 14:58:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2024-11-10 14:58:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 287. [2024-11-10 14:58:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 281 states have (on average 1.0320284697508897) internal successors, (290), 286 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 290 transitions. [2024-11-10 14:58:43,743 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 290 transitions. Word has length 133 [2024-11-10 14:58:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:43,743 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 290 transitions. [2024-11-10 14:58:43,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.0) internal successors, (260), 65 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 290 transitions. [2024-11-10 14:58:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-10 14:58:43,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:43,749 INFO L215 NwaCegarLoop]: trace histogram [63, 62, 62, 62, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:43,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:43,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 14:58:43,950 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:43,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash -843225152, now seen corresponding path program 3 times [2024-11-10 14:58:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963989055] [2024-11-10 14:58:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7690 backedges. 0 proven. 7688 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:46,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:46,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963989055] [2024-11-10 14:58:46,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963989055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:46,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597712859] [2024-11-10 14:58:46,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:58:46,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:46,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:46,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 14:58:46,495 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 14:58:46,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:46,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 14:58:46,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7690 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 7503 trivial. 0 not checked. [2024-11-10 14:58:46,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:47,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-10 14:58:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7690 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 7503 trivial. 0 not checked. [2024-11-10 14:58:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597712859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:47,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 7, 7] total 77 [2024-11-10 14:58:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527769067] [2024-11-10 14:58:47,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:47,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-10 14:58:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-10 14:58:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2394, Invalid=3458, Unknown=0, NotChecked=0, Total=5852 [2024-11-10 14:58:47,399 INFO L87 Difference]: Start difference. First operand 287 states and 290 transitions. Second operand has 77 states, 77 states have (on average 3.844155844155844) internal successors, (296), 77 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,850 INFO L93 Difference]: Finished difference Result 1562 states and 1757 transitions. [2024-11-10 14:58:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-10 14:58:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.844155844155844) internal successors, (296), 77 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2024-11-10 14:58:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,855 INFO L225 Difference]: With dead ends: 1562 [2024-11-10 14:58:51,855 INFO L226 Difference]: Without dead ends: 1562 [2024-11-10 14:58:51,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7269, Invalid=12753, Unknown=0, NotChecked=0, Total=20022 [2024-11-10 14:58:51,859 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 15074 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15074 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15074 Valid, 896 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 14:58:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2024-11-10 14:58:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 672. [2024-11-10 14:58:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 666 states have (on average 1.2027027027027026) internal successors, (801), 671 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 801 transitions. [2024-11-10 14:58:51,883 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 801 transitions. Word has length 261 [2024-11-10 14:58:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,884 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 801 transitions. [2024-11-10 14:58:51,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.844155844155844) internal successors, (296), 77 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 801 transitions. [2024-11-10 14:58:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-10 14:58:51,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,887 INFO L215 NwaCegarLoop]: trace histogram [64, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:51,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 14:58:52,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 14:58:52,088 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:58:52,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1774428967, now seen corresponding path program 1 times [2024-11-10 14:58:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:52,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914161606] [2024-11-10 14:58:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:52,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 0 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:54,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914161606] [2024-11-10 14:58:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914161606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143361885] [2024-11-10 14:58:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:54,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:54,246 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:54,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 14:58:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-10 14:58:54,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 0 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:54,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 0 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:57,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143361885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:57,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:57,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 131 [2024-11-10 14:58:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798043982] [2024-11-10 14:58:57,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:57,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-11-10 14:58:57,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-11-10 14:58:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2024-11-10 14:58:57,979 INFO L87 Difference]: Start difference. First operand 672 states and 801 transitions. Second operand has 131 states, 131 states have (on average 4.015267175572519) internal successors, (526), 131 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:10,397 INFO L93 Difference]: Finished difference Result 3092 states and 3539 transitions. [2024-11-10 14:59:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-10 14:59:10,397 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 4.015267175572519) internal successors, (526), 131 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2024-11-10 14:59:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:10,403 INFO L225 Difference]: With dead ends: 3092 [2024-11-10 14:59:10,403 INFO L226 Difference]: Without dead ends: 3092 [2024-11-10 14:59:10,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2024-11-10 14:59:10,405 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 9696 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9696 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:10,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9696 Valid, 2232 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 14:59:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2024-11-10 14:59:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 932. [2024-11-10 14:59:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 926 states have (on average 1.1457883369330453) internal successors, (1061), 931 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1061 transitions. [2024-11-10 14:59:10,439 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1061 transitions. Word has length 266 [2024-11-10 14:59:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:10,439 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1061 transitions. [2024-11-10 14:59:10,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 4.015267175572519) internal successors, (526), 131 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1061 transitions. [2024-11-10 14:59:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-10 14:59:10,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:10,444 INFO L215 NwaCegarLoop]: trace histogram [129, 128, 128, 128, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:10,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:10,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 14:59:10,645 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:59:10,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 487865541, now seen corresponding path program 2 times [2024-11-10 14:59:10,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:10,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420908205] [2024-11-10 14:59:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 32768 backedges. 0 proven. 32768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:19,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420908205] [2024-11-10 14:59:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420908205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969671892] [2024-11-10 14:59:19,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:59:19,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:19,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:19,430 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:19,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 14:59:19,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 14:59:19,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:19,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 14:59:19,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:21,805 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#src~0#1.base_28| Int) (|v_ULTIMATE.start_main_~#dst~0#1.base_22| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#src~0#1.base_28|) 0) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#src~0#1.base_28| 1) |v_ULTIMATE.start_main_~#dst~0#1.base_22|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#src~0#1.base_28| 0) |v_ULTIMATE.start_main_~#dst~0#1.base_22| 0)))) is different from true [2024-11-10 14:59:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 32768 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32768 trivial. 0 not checked. [2024-11-10 14:59:21,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:59:21,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969671892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:59:21,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:59:21,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [131] total 133 [2024-11-10 14:59:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460857496] [2024-11-10 14:59:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:59:21,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:59:21,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:59:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8519, Invalid=8776, Unknown=1, NotChecked=260, Total=17556 [2024-11-10 14:59:21,822 INFO L87 Difference]: Start difference. First operand 932 states and 1061 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:59:21,843 INFO L93 Difference]: Finished difference Result 931 states and 1060 transitions. [2024-11-10 14:59:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:59:21,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 526 [2024-11-10 14:59:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:59:21,846 INFO L225 Difference]: With dead ends: 931 [2024-11-10 14:59:21,846 INFO L226 Difference]: Without dead ends: 925 [2024-11-10 14:59:21,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8519, Invalid=8776, Unknown=1, NotChecked=260, Total=17556 [2024-11-10 14:59:21,848 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:59:21,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 23 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2024-11-10 14:59:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-10 14:59:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 925. [2024-11-10 14:59:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 920 states have (on average 1.1445652173913043) internal successors, (1053), 924 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1053 transitions. [2024-11-10 14:59:21,855 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1053 transitions. Word has length 526 [2024-11-10 14:59:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:59:21,856 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1053 transitions. [2024-11-10 14:59:21,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:59:21,856 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1053 transitions. [2024-11-10 14:59:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-10 14:59:21,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:59:21,861 INFO L215 NwaCegarLoop]: trace histogram [129, 128, 128, 128, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:59:21,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 14:59:22,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 14:59:22,062 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-10 14:59:22,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:59:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1565348255, now seen corresponding path program 1 times [2024-11-10 14:59:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:59:22,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856428342] [2024-11-10 14:59:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:22,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:59:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 32773 backedges. 0 proven. 32768 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 14:59:30,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:59:30,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856428342] [2024-11-10 14:59:30,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856428342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:59:30,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726622270] [2024-11-10 14:59:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:59:30,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:59:30,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:59:30,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:59:30,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 14:59:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:59:30,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-10 14:59:30,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 32773 backedges. 0 proven. 32768 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 14:59:31,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 32773 backedges. 0 proven. 32768 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 14:59:44,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726622270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:44,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:44,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131, 131] total 261 [2024-11-10 14:59:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066137241] [2024-11-10 14:59:44,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:44,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 261 states [2024-11-10 14:59:44,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 261 interpolants. [2024-11-10 14:59:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33930, Invalid=33930, Unknown=0, NotChecked=0, Total=67860 [2024-11-10 14:59:44,047 INFO L87 Difference]: Start difference. First operand 925 states and 1053 transitions. Second operand has 261 states, 261 states have (on average 4.0) internal successors, (1044), 261 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)