./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-15/array16_alloca_original.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-15/array16_alloca_original.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:32:11,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:32:11,333 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-13 15:32:11,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:32:11,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:32:11,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:32:11,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:32:11,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:32:11,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:32:11,366 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:32:11,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:32:11,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:32:11,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:32:11,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:32:11,367 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:32:11,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:32:11,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:32:11,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:32:11,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:32:11,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:32:11,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:32:11,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:32:11,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:32:11,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:32:11,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:32:11,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:32:11,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:32:11,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:32:11,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:32:11,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:32:11,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:32:11,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:32:11,372 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 [2024-11-13 15:32:11,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:32:11,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:32:11,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:32:11,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:32:11,700 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:32:11,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/termination-15/array16_alloca_original.i Unable to find full path for "g++" [2024-11-13 15:32:13,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:32:14,141 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:32:14,142 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/sv-benchmarks/c/termination-15/array16_alloca_original.i [2024-11-13 15:32:14,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/data/c830503ec/10fcea1b492c46faa06686fd05b456e6/FLAGe7bcde094 [2024-11-13 15:32:14,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/data/c830503ec/10fcea1b492c46faa06686fd05b456e6 [2024-11-13 15:32:14,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:32:14,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:32:14,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:32:14,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:32:14,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:32:14,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7586f074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14, skipping insertion in model container [2024-11-13 15:32:14,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,242 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:32:14,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:32:14,637 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:32:14,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:32:14,720 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:32:14,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14 WrapperNode [2024-11-13 15:32:14,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:32:14,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:32:14,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:32:14,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:32:14,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,768 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-13 15:32:14,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:32:14,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:32:14,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:32:14,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:32:14,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,791 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-13 15:32:14,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:32:14,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:32:14,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:32:14,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:32:14,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (1/1) ... [2024-11-13 15:32:14,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:32:14,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:14,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:32:14,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:32:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:32:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:32:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:32:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:32:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:32:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:32:14,954 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:32:14,955 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:32:15,142 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-13 15:32:15,142 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:32:15,152 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:32:15,152 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:32:15,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:32:15 BoogieIcfgContainer [2024-11-13 15:32:15,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:32:15,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:32:15,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:32:15,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:32:15,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:32:14" (1/3) ... [2024-11-13 15:32:15,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546b6689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:32:15, skipping insertion in model container [2024-11-13 15:32:15,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:14" (2/3) ... [2024-11-13 15:32:15,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546b6689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:32:15, skipping insertion in model container [2024-11-13 15:32:15,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:32:15" (3/3) ... [2024-11-13 15:32:15,163 INFO L112 eAbstractionObserver]: Analyzing ICFG array16_alloca_original.i [2024-11-13 15:32:15,182 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:32:15,184 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array16_alloca_original.i that has 1 procedures, 29 locations, 1 initial locations, 2 loop locations, and 9 error locations. [2024-11-13 15:32:15,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:32:15,254 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;@3f0cdde0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:32:15,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-13 15:32:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 15:32:15,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:15,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:32:15,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:15,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 889508765, now seen corresponding path program 1 times [2024-11-13 15:32:15,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:15,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412411079] [2024-11-13 15:32:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:15,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412411079] [2024-11-13 15:32:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412411079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:15,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:15,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:32:15,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249149017] [2024-11-13 15:32:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:15,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:32:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:32:15,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:32:15,590 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 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, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:15,661 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-13 15:32:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:32:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-13 15:32:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:15,672 INFO L225 Difference]: With dead ends: 29 [2024-11-13 15:32:15,672 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 15:32:15,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:32:15,678 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:15,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 15:32:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 15:32:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-13 15:32:15,723 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2024-11-13 15:32:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:15,724 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-13 15:32:15,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-13 15:32:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 15:32:15,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:15,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:15,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:32:15,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:15,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1804968521, now seen corresponding path program 1 times [2024-11-13 15:32:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:15,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475287227] [2024-11-13 15:32:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:15,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:15,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475287227] [2024-11-13 15:32:15,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475287227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:15,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:15,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:32:15,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239654882] [2024-11-13 15:32:15,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:15,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:32:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:32:15,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:32:15,850 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:15,915 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-11-13 15:32:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:32:15,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-13 15:32:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:15,917 INFO L225 Difference]: With dead ends: 23 [2024-11-13 15:32:15,918 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 15:32:15,918 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 [2024-11-13 15:32:15,920 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:15,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 15:32:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-13 15:32:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.5) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-13 15:32:15,929 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2024-11-13 15:32:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:15,930 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-13 15:32:15,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-13 15:32:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 15:32:15,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:15,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:15,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:32:15,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:15,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1804968522, now seen corresponding path program 1 times [2024-11-13 15:32:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477808465] [2024-11-13 15:32:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477808465] [2024-11-13 15:32:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477808465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:16,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:32:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251886790] [2024-11-13 15:32:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:16,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:32:16,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:32:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:32:16,489 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:16,733 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2024-11-13 15:32:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:32:16,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-13 15:32:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:16,736 INFO L225 Difference]: With dead ends: 47 [2024-11-13 15:32:16,736 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 15:32:16,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:32:16,737 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:16,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 71 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:32:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 15:32:16,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2024-11-13 15:32:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-13 15:32:16,747 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 7 [2024-11-13 15:32:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:16,748 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-13 15:32:16,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-13 15:32:16,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 15:32:16,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:16,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:16,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:32:16,749 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:16,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815564, now seen corresponding path program 1 times [2024-11-13 15:32:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:16,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529727668] [2024-11-13 15:32:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:17,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:17,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529727668] [2024-11-13 15:32:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529727668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:17,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:17,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:32:17,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942845865] [2024-11-13 15:32:17,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:17,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:32:17,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:32:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:32:17,055 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:17,180 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-13 15:32:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:32:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-13 15:32:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:17,184 INFO L225 Difference]: With dead ends: 38 [2024-11-13 15:32:17,184 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 15:32:17,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:32:17,187 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:17,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 31 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 15:32:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2024-11-13 15:32:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-13 15:32:17,194 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2024-11-13 15:32:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:17,195 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-13 15:32:17,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-13 15:32:17,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 15:32:17,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:17,196 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:17,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:32:17,196 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:17,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1744874990, now seen corresponding path program 1 times [2024-11-13 15:32:17,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351980888] [2024-11-13 15:32:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:17,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:17,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351980888] [2024-11-13 15:32:17,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351980888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:32:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158883386] [2024-11-13 15:32:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:17,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:17,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:17,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:17,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:32:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:17,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:32:17,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:17,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:32:17,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158883386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:17,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:32:17,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 15:32:17,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641461267] [2024-11-13 15:32:17,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:17,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:32:17,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:32:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:32:17,529 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-13 15:32:17,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:17,585 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-13 15:32:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:32:17,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 15:32:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:17,586 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:32:17,586 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 15:32:17,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:32:17,587 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:17,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:32:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 15:32:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2024-11-13 15:32:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-13 15:32:17,597 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 13 [2024-11-13 15:32:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:17,597 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-13 15:32:17,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-13 15:32:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-13 15:32:17,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 15:32:17,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:17,600 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:17,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:32:17,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:17,801 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:17,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1849027728, now seen corresponding path program 1 times [2024-11-13 15:32:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:17,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525430369] [2024-11-13 15:32:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525430369] [2024-11-13 15:32:18,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525430369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:32:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097343869] [2024-11-13 15:32:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:18,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:18,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:32:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:18,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:32:18,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:18,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-13 15:32:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:18,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:32:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:19,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097343869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:32:19,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:32:19,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-13 15:32:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716222290] [2024-11-13 15:32:19,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:32:19,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:32:19,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:32:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:32:19,420 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:19,750 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-13 15:32:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:32:19,751 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 15:32:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:19,751 INFO L225 Difference]: With dead ends: 37 [2024-11-13 15:32:19,752 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:32:19,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:32:19,753 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:19,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 76 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:32:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:32:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2024-11-13 15:32:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-13 15:32:19,758 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 13 [2024-11-13 15:32:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:19,758 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-13 15:32:19,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-13 15:32:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:32:19,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:19,763 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:19,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:32:19,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 15:32:19,964 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:19,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:19,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1787579301, now seen corresponding path program 1 times [2024-11-13 15:32:19,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:19,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862578897] [2024-11-13 15:32:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:19,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:20,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:20,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862578897] [2024-11-13 15:32:20,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862578897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:32:20,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975517049] [2024-11-13 15:32:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:20,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:20,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:20,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:32:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:20,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:32:20,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:20,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:32:20,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 15:32:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975517049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:32:20,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:32:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-13 15:32:20,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218933201] [2024-11-13 15:32:20,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:32:20,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:32:20,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:20,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:32:20,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:32:20,399 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:20,510 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-11-13 15:32:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:32:20,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 15:32:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:20,511 INFO L225 Difference]: With dead ends: 40 [2024-11-13 15:32:20,511 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 15:32:20,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:32:20,512 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 67 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:20,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 48 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 15:32:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-13 15:32:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 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) [2024-11-13 15:32:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-13 15:32:20,516 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 15 [2024-11-13 15:32:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:20,516 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-13 15:32:20,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-13 15:32:20,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:32:20,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:20,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:20,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:32:20,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 15:32:20,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:20,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:20,722 INFO L85 PathProgramCache]: Analyzing trace with hash -419618063, now seen corresponding path program 1 times [2024-11-13 15:32:20,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:20,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178702431] [2024-11-13 15:32:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:20,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:32:20,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:20,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178702431] [2024-11-13 15:32:20,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178702431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:20,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:20,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:32:20,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843067583] [2024-11-13 15:32:20,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:20,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:32:20,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:20,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:32:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:32:20,780 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:20,814 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-13 15:32:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:32:20,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 15:32:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:20,815 INFO L225 Difference]: With dead ends: 34 [2024-11-13 15:32:20,815 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 15:32:20,815 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 [2024-11-13 15:32:20,816 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:20,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:32:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 15:32:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-13 15:32:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-13 15:32:20,820 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 16 [2024-11-13 15:32:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:20,820 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-13 15:32:20,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-13 15:32:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:32:20,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:20,821 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:20,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:32:20,822 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:20,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash 475449817, now seen corresponding path program 1 times [2024-11-13 15:32:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401218798] [2024-11-13 15:32:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:32:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:20,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401218798] [2024-11-13 15:32:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401218798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:32:20,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926477365] [2024-11-13 15:32:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:20,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:20,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:21,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:21,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:32:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:21,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:32:21,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:32:21,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:32:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926477365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:21,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:32:21,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-13 15:32:21,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429287858] [2024-11-13 15:32:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:21,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:32:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:32:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:32:21,144 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:21,189 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-13 15:32:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:32:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 15:32:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:21,190 INFO L225 Difference]: With dead ends: 41 [2024-11-13 15:32:21,190 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 15:32:21,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:32:21,191 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:21,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:32:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 15:32:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-13 15:32:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.263157894736842) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:21,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-11-13 15:32:21,199 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 18 [2024-11-13 15:32:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:21,199 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-11-13 15:32:21,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:21,199 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-11-13 15:32:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:32:21,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:21,200 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:21,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:32:21,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 15:32:21,401 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:21,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash 475451739, now seen corresponding path program 1 times [2024-11-13 15:32:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:21,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091545875] [2024-11-13 15:32:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:21,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:32:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091545875] [2024-11-13 15:32:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091545875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:32:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626956706] [2024-11-13 15:32:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:21,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:21,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:21,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:21,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:32:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:21,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:32:21,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:32:21,554 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:32:21,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626956706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:21,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:32:21,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-13 15:32:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88862271] [2024-11-13 15:32:21,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:21,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:32:21,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:32:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:32:21,556 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:21,587 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-13 15:32:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:32:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 15:32:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:21,588 INFO L225 Difference]: With dead ends: 41 [2024-11-13 15:32:21,588 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 15:32:21,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:32:21,589 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:21,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:32:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 15:32:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-11-13 15:32:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-11-13 15:32:21,598 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 18 [2024-11-13 15:32:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:21,598 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-11-13 15:32:21,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-11-13 15:32:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:32:21,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:21,599 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:21,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:32:21,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:32:21,799 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:21,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash -545618537, now seen corresponding path program 1 times [2024-11-13 15:32:21,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:21,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167605641] [2024-11-13 15:32:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:21,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:32:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:21,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167605641] [2024-11-13 15:32:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167605641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:32:21,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22991849] [2024-11-13 15:32:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:21,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:21,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:21,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:32:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:22,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:32:22,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:22,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:32:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22991849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:32:22,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:32:22,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-13 15:32:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131822500] [2024-11-13 15:32:22,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:32:22,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:32:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:32:22,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:32:22,163 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:22,476 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2024-11-13 15:32:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:32:22,477 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 15:32:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:22,477 INFO L225 Difference]: With dead ends: 58 [2024-11-13 15:32:22,477 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 15:32:22,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:32:22,478 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 60 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:22,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 63 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 15:32:22,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2024-11-13 15:32:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-11-13 15:32:22,483 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 18 [2024-11-13 15:32:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:22,483 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-11-13 15:32:22,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-11-13 15:32:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:32:22,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:22,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:22,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:32:22,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:32:22,689 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-13 15:32:22,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1854040893, now seen corresponding path program 1 times [2024-11-13 15:32:22,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782748244] [2024-11-13 15:32:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:32:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782748244] [2024-11-13 15:32:22,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782748244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:22,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:22,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:32:22,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327031088] [2024-11-13 15:32:22,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:22,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:32:22,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:22,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:32:22,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:32:22,848 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:22,892 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-13 15:32:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:32:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 15:32:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:22,893 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:32:22,893 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 15:32:22,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:32:22,894 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:22,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:32:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 15:32:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 15:32:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 15:32:22,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2024-11-13 15:32:22,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:22,896 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 15:32:22,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:32:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 15:32:22,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 15:32:22,899 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-13 15:32:22,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-13 15:32:22,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-13 15:32:22,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-13 15:32:22,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-13 15:32:22,901 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-13 15:32:22,901 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-13 15:32:22,901 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-13 15:32:22,901 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-13 15:32:22,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:32:22,905 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:22,907 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:32:22,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:32:22 BoogieIcfgContainer [2024-11-13 15:32:22,913 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:32:22,914 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:32:22,914 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:32:22,914 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:32:22,915 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:32:15" (3/4) ... [2024-11-13 15:32:22,918 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 15:32:22,927 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 15:32:22,927 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 15:32:22,928 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 15:32:22,928 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 15:32:23,008 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 15:32:23,008 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 15:32:23,008 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:32:23,010 INFO L158 Benchmark]: Toolchain (without parser) took 8817.37ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 108.4MB in the end (delta: 8.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2024-11-13 15:32:23,010 INFO L158 Benchmark]: CDTParser took 1.10ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:32:23,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.46ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 98.3MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:32:23,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.20ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 96.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:32:23,012 INFO L158 Benchmark]: Boogie Preprocessor took 45.84ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:32:23,012 INFO L158 Benchmark]: RCFGBuilder took 336.16ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 82.6MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:32:23,013 INFO L158 Benchmark]: TraceAbstraction took 7758.44ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 114.0MB in the end (delta: -32.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:32:23,013 INFO L158 Benchmark]: Witness Printer took 94.65ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 108.4MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:32:23,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.46ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 98.3MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.20ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 96.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.84ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.16ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 82.6MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7758.44ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 114.0MB in the end (delta: -32.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 94.65ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 108.4MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 364]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 344 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 344 mSDsluCounter, 537 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 348 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 613 IncrementalHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 189 mSDtfsCounter, 613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=11, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 60 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 277 ConstructedInterpolants, 0 QuantifiedInterpolants, 2122 SizeOfPredicates, 12 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 22/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 15:32:23,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cef6010-1989-4dd4-bc92-416bdec730ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE