./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.03_assume-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.03_assume-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1dfda05d3675e1795581ea2bc298236cc0d085a96432f97caff9d055d75a6052 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:08,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:08,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-06 21:58:08,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:08,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:08,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:08,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:08,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:08,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:08,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:08,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:08,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:08,918 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:08,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:08,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:08,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:08,921 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:58:08,922 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:58:08,923 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:58:08,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:08,924 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:58:08,925 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:58:08,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:08,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:08,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:08,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:08,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:08,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:08,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:08,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:08,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:08,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:08,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:08,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:08,932 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:08,933 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dfda05d3675e1795581ea2bc298236cc0d085a96432f97caff9d055d75a6052 [2023-11-06 21:58:09,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:09,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:09,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:09,268 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:09,268 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:09,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-memory-alloca/b.03_assume-alloca.i [2023-11-06 21:58:12,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:58:12,715 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:58:12,720 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/sv-benchmarks/c/termination-memory-alloca/b.03_assume-alloca.i [2023-11-06 21:58:12,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/data/807a2041c/82a088548706421dadb3b76175c5c306/FLAG804c6f390 [2023-11-06 21:58:12,751 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/data/807a2041c/82a088548706421dadb3b76175c5c306 [2023-11-06 21:58:12,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:58:12,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:58:12,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:12,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:58:12,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:58:12,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:12" (1/1) ... [2023-11-06 21:58:12,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5836930e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:12, skipping insertion in model container [2023-11-06 21:58:12,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:12" (1/1) ... [2023-11-06 21:58:12,819 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:58:13,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:13,115 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:58:13,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:13,214 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:58:13,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13 WrapperNode [2023-11-06 21:58:13,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:13,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:13,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:58:13,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:58:13,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,258 INFO L138 Inliner]: procedures = 111, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2023-11-06 21:58:13,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:13,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:58:13,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:58:13,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:58:13,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:58:13,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:58:13,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:58:13,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:58:13,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (1/1) ... [2023-11-06 21:58:13,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:13,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:13,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:58:13,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:58:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:58:13,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:58:13,524 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:58:13,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:58:13,859 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:58:13,866 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:58:13,867 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:58:13,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:13 BoogieIcfgContainer [2023-11-06 21:58:13,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:58:13,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:58:13,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:58:13,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:58:13,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:12" (1/3) ... [2023-11-06 21:58:13,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9e18c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:13, skipping insertion in model container [2023-11-06 21:58:13,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:13" (2/3) ... [2023-11-06 21:58:13,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9e18c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:13, skipping insertion in model container [2023-11-06 21:58:13,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:13" (3/3) ... [2023-11-06 21:58:13,879 INFO L112 eAbstractionObserver]: Analyzing ICFG b.03_assume-alloca.i [2023-11-06 21:58:13,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:58:13,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-11-06 21:58:13,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:13,961 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@428cb5d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:13,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-06 21:58:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:58:13,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:13,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:58:13,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-06 21:58:13,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-11-06 21:58:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:13,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342315273] [2023-11-06 21:58:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:13,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:14,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342315273] [2023-11-06 21:58:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342315273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:14,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:14,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:14,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562934820] [2023-11-06 21:58:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:14,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:14,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:14,488 INFO L87 Difference]: Start difference. First operand has 59 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:14,582 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-11-06 21:58:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:14,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-11-06 21:58:14,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:14,594 INFO L225 Difference]: With dead ends: 53 [2023-11-06 21:58:14,594 INFO L226 Difference]: Without dead ends: 51 [2023-11-06 21:58:14,596 INFO L412 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 [2023-11-06 21:58:14,603 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:14,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 26 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:58:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-06 21:58:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-06 21:58:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 50 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) [2023-11-06 21:58:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2023-11-06 21:58:14,640 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 3 [2023-11-06 21:58:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:14,641 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-11-06 21:58:14,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2023-11-06 21:58:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:58:14,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:14,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:58:14,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:58:14,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-06 21:58:14,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-06 21:58:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:14,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058832990] [2023-11-06 21:58:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:14,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058832990] [2023-11-06 21:58:14,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058832990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:14,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:14,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:14,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499810132] [2023-11-06 21:58:14,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:14,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:14,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:14,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:14,869 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:14,955 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-11-06 21:58:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-11-06 21:58:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:14,958 INFO L225 Difference]: With dead ends: 45 [2023-11-06 21:58:14,959 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 21:58:14,963 INFO L412 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 [2023-11-06 21:58:14,965 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:14,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 28 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:58:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 21:58:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-06 21:58:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 44 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) [2023-11-06 21:58:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2023-11-06 21:58:14,981 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 3 [2023-11-06 21:58:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:14,982 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2023-11-06 21:58:14,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2023-11-06 21:58:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 21:58:14,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:14,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 21:58:14,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:58:14,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-06 21:58:14,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2023-11-06 21:58:14,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276506222] [2023-11-06 21:58:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276506222] [2023-11-06 21:58:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276506222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:15,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717221256] [2023-11-06 21:58:15,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:15,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:15,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:15,104 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:15,183 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-11-06 21:58:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-06 21:58:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:15,185 INFO L225 Difference]: With dead ends: 37 [2023-11-06 21:58:15,186 INFO L226 Difference]: Without dead ends: 37 [2023-11-06 21:58:15,186 INFO L412 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 [2023-11-06 21:58:15,191 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:15,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 15 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:58:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-06 21:58:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-06 21:58:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-11-06 21:58:15,198 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 4 [2023-11-06 21:58:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:15,199 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-11-06 21:58:15,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-11-06 21:58:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-06 21:58:15,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:15,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-06 21:58:15,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:58:15,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-06 21:58:15,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:15,201 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2023-11-06 21:58:15,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:15,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703296372] [2023-11-06 21:58:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:15,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:15,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703296372] [2023-11-06 21:58:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703296372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:15,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:15,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:15,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276011476] [2023-11-06 21:58:15,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:15,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:15,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:15,328 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:15,364 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-11-06 21:58:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:15,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-06 21:58:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:15,365 INFO L225 Difference]: With dead ends: 29 [2023-11-06 21:58:15,365 INFO L226 Difference]: Without dead ends: 29 [2023-11-06 21:58:15,365 INFO L412 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 [2023-11-06 21:58:15,366 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:15,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:58:15,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-06 21:58:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-06 21:58:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-06 21:58:15,371 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 4 [2023-11-06 21:58:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:15,371 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-06 21:58:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-06 21:58:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 21:58:15,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:15,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:15,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:58:15,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2023-11-06 21:58:15,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1117683888, now seen corresponding path program 1 times [2023-11-06 21:58:15,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:15,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110776296] [2023-11-06 21:58:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:15,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110776296] [2023-11-06 21:58:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110776296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:15,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:15,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:15,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353544076] [2023-11-06 21:58:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:15,613 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:15,687 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-11-06 21:58:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:15,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-06 21:58:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:15,692 INFO L225 Difference]: With dead ends: 28 [2023-11-06 21:58:15,692 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:58:15,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:15,694 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:15,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:58:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:58:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:58:15,696 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) [2023-11-06 21:58:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:58:15,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2023-11-06 21:58:15,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:15,696 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:58:15,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:58:15,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:58:15,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 29 remaining) [2023-11-06 21:58:15,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 29 remaining) [2023-11-06 21:58:15,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 29 remaining) [2023-11-06 21:58:15,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 29 remaining) [2023-11-06 21:58:15,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 29 remaining) [2023-11-06 21:58:15,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 29 remaining) [2023-11-06 21:58:15,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2023-11-06 21:58:15,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2023-11-06 21:58:15,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2023-11-06 21:58:15,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2023-11-06 21:58:15,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2023-11-06 21:58:15,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2023-11-06 21:58:15,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2023-11-06 21:58:15,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2023-11-06 21:58:15,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 29 remaining) [2023-11-06 21:58:15,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 29 remaining) [2023-11-06 21:58:15,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 29 remaining) [2023-11-06 21:58:15,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 29 remaining) [2023-11-06 21:58:15,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 29 remaining) [2023-11-06 21:58:15,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 29 remaining) [2023-11-06 21:58:15,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 29 remaining) [2023-11-06 21:58:15,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2023-11-06 21:58:15,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2023-11-06 21:58:15,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2023-11-06 21:58:15,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2023-11-06 21:58:15,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2023-11-06 21:58:15,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2023-11-06 21:58:15,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2023-11-06 21:58:15,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2023-11-06 21:58:15,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:58:15,713 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 21:58:15,715 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:58:15,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:58:15 BoogieIcfgContainer [2023-11-06 21:58:15,724 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:58:15,725 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:58:15,725 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:58:15,725 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:58:15,726 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:13" (3/4) ... [2023-11-06 21:58:15,728 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:58:15,768 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 21:58:15,769 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 21:58:15,769 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-06 21:58:15,770 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:58:15,840 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:58:15,841 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:58:15,841 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:58:15,841 INFO L158 Benchmark]: Toolchain (without parser) took 3086.68ms. Allocated memory was 151.0MB in the beginning and 199.2MB in the end (delta: 48.2MB). Free memory was 119.7MB in the beginning and 160.8MB in the end (delta: -41.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-11-06 21:58:15,842 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:58:15,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 458.98ms. Allocated memory is still 151.0MB. Free memory was 119.2MB in the beginning and 103.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 21:58:15,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.01ms. Allocated memory is still 151.0MB. Free memory was 103.6MB in the beginning and 101.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:15,848 INFO L158 Benchmark]: Boogie Preprocessor took 36.77ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 100.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:15,848 INFO L158 Benchmark]: RCFGBuilder took 572.05ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 84.7MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 21:58:15,848 INFO L158 Benchmark]: TraceAbstraction took 1852.20ms. Allocated memory was 151.0MB in the beginning and 199.2MB in the end (delta: 48.2MB). Free memory was 84.0MB in the beginning and 165.0MB in the end (delta: -81.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:58:15,849 INFO L158 Benchmark]: Witness Printer took 116.01ms. Allocated memory is still 199.2MB. Free memory was 165.0MB in the beginning and 160.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:58:15,852 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 458.98ms. Allocated memory is still 151.0MB. Free memory was 119.2MB in the beginning and 103.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.01ms. Allocated memory is still 151.0MB. Free memory was 103.6MB in the beginning and 101.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.77ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 100.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 572.05ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 84.7MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1852.20ms. Allocated memory was 151.0MB in the beginning and 199.2MB in the end (delta: 48.2MB). Free memory was 84.0MB in the beginning and 165.0MB in the end (delta: -81.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 116.01ms. Allocated memory is still 199.2MB. Free memory was 165.0MB in the beginning and 160.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: -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: -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: -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: 564]: 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, 59 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 98 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 29 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:58:15,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8083da4-1780-415a-905c-ee268e775fd5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE