./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:34:22,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:34:22,873 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-06 20:34:22,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:34:22,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:34:22,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:34:22,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:34:22,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:34:22,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:34:22,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:34:22,909 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:34:22,910 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:34:22,910 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:34:22,911 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:34:22,911 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:34:22,912 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:34:22,912 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:34:22,913 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:34:22,913 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:34:22,914 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:34:22,914 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:34:22,915 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:34:22,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:34:22,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:34:22,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:34:22,917 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:34:22,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:34:22,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:34:22,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:34:22,919 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:34:22,919 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:34:22,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:34:22,920 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:34:22,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:34:22,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:34:22,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:34:22,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:34:22,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:34:22,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:34:22,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:34:22,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:34:22,924 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:34:22,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:34:22,925 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:34:22,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:34:22,926 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 [2023-11-06 20:34:23,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:34:23,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:34:23,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:34:23,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:34:23,315 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:34:23,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/list-ext-properties/simple-ext.i [2023-11-06 20:34:26,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:34:27,022 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:34:27,023 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/sv-benchmarks/c/list-ext-properties/simple-ext.i [2023-11-06 20:34:27,043 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/data/8debb656c/28fed79b47524206bfbd43ab51def6a3/FLAG4bf9c3472 [2023-11-06 20:34:27,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/data/8debb656c/28fed79b47524206bfbd43ab51def6a3 [2023-11-06 20:34:27,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:34:27,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:34:27,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:27,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:34:27,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:34:27,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc53790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27, skipping insertion in model container [2023-11-06 20:34:27,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:34:27,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:27,492 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:34:27,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:27,594 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:34:27,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27 WrapperNode [2023-11-06 20:34:27,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:27,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:34:27,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:34:27,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:34:27,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,655 INFO L138 Inliner]: procedures = 124, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-11-06 20:34:27,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:34:27,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:34:27,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:34:27,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:34:27,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:34:27,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:34:27,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:34:27,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:34:27,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (1/1) ... [2023-11-06 20:34:27,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:34:27,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:34:27,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:34:27,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:34:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-11-06 20:34:27,784 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-11-06 20:34:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:34:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:34:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:34:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:34:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:34:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:34:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:34:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:34:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:34:27,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:34:27,892 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:34:27,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:34:27,948 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-11-06 20:34:28,240 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:34:28,310 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:34:28,310 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 20:34:28,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:34:28 BoogieIcfgContainer [2023-11-06 20:34:28,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:34:28,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:34:28,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:34:28,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:34:28,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:34:27" (1/3) ... [2023-11-06 20:34:28,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45156f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:34:28, skipping insertion in model container [2023-11-06 20:34:28,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:27" (2/3) ... [2023-11-06 20:34:28,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45156f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:34:28, skipping insertion in model container [2023-11-06 20:34:28,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:34:28" (3/3) ... [2023-11-06 20:34:28,336 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2023-11-06 20:34:28,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:34:28,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-11-06 20:34:28,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:34:28,473 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=FINITE_AUTOMATA, 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;@40530c50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:34:28,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 20:34:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:34:28,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:28,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:34:28,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-06 20:34:28,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash 152784298, now seen corresponding path program 1 times [2023-11-06 20:34:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393861091] [2023-11-06 20:34:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:28,701 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 20:34:28,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:28,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393861091] [2023-11-06 20:34:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393861091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:28,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:28,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:34:28,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060649442] [2023-11-06 20:34:28,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:28,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:34:28,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:28,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:34:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:34:28,762 INFO L87 Difference]: Start difference. First operand has 50 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:28,812 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-11-06 20:34:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:34:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-06 20:34:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:28,823 INFO L225 Difference]: With dead ends: 49 [2023-11-06 20:34:28,824 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 20:34:28,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:34:28,830 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:28,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:34:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 20:34:28,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-06 20:34:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 2.0) internal successors, (46), 43 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) [2023-11-06 20:34:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-11-06 20:34:28,869 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 5 [2023-11-06 20:34:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:28,870 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-11-06 20:34:28,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-11-06 20:34:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:34:28,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:28,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 20:34:28,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:34:28,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-06 20:34:28,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash 441429789, now seen corresponding path program 1 times [2023-11-06 20:34:28,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005477964] [2023-11-06 20:34:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:29,065 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 20:34:29,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:29,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005477964] [2023-11-06 20:34:29,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005477964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:29,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:29,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:34:29,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360619177] [2023-11-06 20:34:29,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:29,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:34:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:29,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:34:29,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:34:29,072 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 4 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) [2023-11-06 20:34:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:29,275 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2023-11-06 20:34:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:34:29,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2023-11-06 20:34:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:29,279 INFO L225 Difference]: With dead ends: 58 [2023-11-06 20:34:29,279 INFO L226 Difference]: Without dead ends: 58 [2023-11-06 20:34:29,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:34:29,287 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:29,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 15 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:34:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-06 20:34:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2023-11-06 20:34:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2023-11-06 20:34:29,302 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 6 [2023-11-06 20:34:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:29,302 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2023-11-06 20:34:29,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-11-06 20:34:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2023-11-06 20:34:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:34:29,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:29,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 20:34:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:34:29,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-06 20:34:29,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 441429790, now seen corresponding path program 1 times [2023-11-06 20:34:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:29,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477812743] [2023-11-06 20:34:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:29,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:29,476 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 20:34:29,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477812743] [2023-11-06 20:34:29,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477812743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:29,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:29,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:34:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250221893] [2023-11-06 20:34:29,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:29,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:34:29,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:34:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:34:29,479 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 4 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) [2023-11-06 20:34:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:29,639 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2023-11-06 20:34:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:34:29,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2023-11-06 20:34:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:29,648 INFO L225 Difference]: With dead ends: 88 [2023-11-06 20:34:29,648 INFO L226 Difference]: Without dead ends: 88 [2023-11-06 20:34:29,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:34:29,654 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 63 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:29,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 41 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:34:29,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-06 20:34:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 61. [2023-11-06 20:34:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 60 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:34:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2023-11-06 20:34:29,662 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 6 [2023-11-06 20:34:29,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:29,663 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2023-11-06 20:34:29,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-11-06 20:34:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2023-11-06 20:34:29,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 20:34:29,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:29,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:29,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:34:29,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-06 20:34:29,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:29,665 INFO L85 PathProgramCache]: Analyzing trace with hash -22545481, now seen corresponding path program 1 times [2023-11-06 20:34:29,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:29,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121978421] [2023-11-06 20:34:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:29,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:34:29,764 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 20:34:29,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:34:29,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121978421] [2023-11-06 20:34:29,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121978421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:34:29,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:34:29,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:34:29,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907395365] [2023-11-06 20:34:29,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:34:29,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:34:29,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:34:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:34:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:34:29,767 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 20:34:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:34:29,881 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2023-11-06 20:34:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:34:29,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 20:34:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:34:29,886 INFO L225 Difference]: With dead ends: 74 [2023-11-06 20:34:29,887 INFO L226 Difference]: Without dead ends: 74 [2023-11-06 20:34:29,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:34:29,891 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 77 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:34:29,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 30 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:34:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-06 20:34:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2023-11-06 20:34:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 60 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:34:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-11-06 20:34:29,902 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 10 [2023-11-06 20:34:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:34:29,903 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-11-06 20:34:29,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 20:34:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-11-06 20:34:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:34:29,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:34:29,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:34:29,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:34:29,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-06 20:34:29,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:34:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -260800418, now seen corresponding path program 1 times [2023-11-06 20:34:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:34:29,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464458838] [2023-11-06 20:34:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:34:29,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:34:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:34:29,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 20:34:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:34:29,990 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 20:34:29,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 20:34:29,992 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (20 of 21 remaining) [2023-11-06 20:34:29,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 21 remaining) [2023-11-06 20:34:29,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 21 remaining) [2023-11-06 20:34:29,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 21 remaining) [2023-11-06 20:34:29,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 21 remaining) [2023-11-06 20:34:29,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 21 remaining) [2023-11-06 20:34:29,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 21 remaining) [2023-11-06 20:34:29,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 21 remaining) [2023-11-06 20:34:29,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 21 remaining) [2023-11-06 20:34:29,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 21 remaining) [2023-11-06 20:34:29,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 21 remaining) [2023-11-06 20:34:30,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 21 remaining) [2023-11-06 20:34:30,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 21 remaining) [2023-11-06 20:34:30,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 21 remaining) [2023-11-06 20:34:30,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 21 remaining) [2023-11-06 20:34:30,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 21 remaining) [2023-11-06 20:34:30,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 21 remaining) [2023-11-06 20:34:30,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (3 of 21 remaining) [2023-11-06 20:34:30,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (2 of 21 remaining) [2023-11-06 20:34:30,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (1 of 21 remaining) [2023-11-06 20:34:30,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2023-11-06 20:34:30,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:34:30,006 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 20:34:30,011 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:34:30,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:34:30 BoogieIcfgContainer [2023-11-06 20:34:30,039 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:34:30,043 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:34:30,043 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:34:30,043 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:34:30,044 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:34:28" (3/4) ... [2023-11-06 20:34:30,045 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 20:34:30,092 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:34:30,092 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:34:30,093 INFO L158 Benchmark]: Toolchain (without parser) took 3030.52ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 101.2MB in the beginning and 83.0MB in the end (delta: 18.2MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2023-11-06 20:34:30,094 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 138.4MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:34:30,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 531.54ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 84.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 20:34:30,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.05ms. Allocated memory is still 138.4MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:34:30,095 INFO L158 Benchmark]: Boogie Preprocessor took 41.76ms. Allocated memory is still 138.4MB. Free memory was 82.4MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:34:30,095 INFO L158 Benchmark]: RCFGBuilder took 620.56ms. Allocated memory is still 138.4MB. Free memory was 80.7MB in the beginning and 61.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 20:34:30,096 INFO L158 Benchmark]: TraceAbstraction took 1717.29ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 60.6MB in the beginning and 85.1MB in the end (delta: -24.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:34:30,097 INFO L158 Benchmark]: Witness Printer took 49.71ms. Allocated memory is still 182.5MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:34:30,104 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 138.4MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 531.54ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 84.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.05ms. Allocated memory is still 138.4MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.76ms. Allocated memory is still 138.4MB. Free memory was 82.4MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 620.56ms. Allocated memory is still 138.4MB. Free memory was 80.7MB in the beginning and 61.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1717.29ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 60.6MB in the beginning and 85.1MB in the end (delta: -24.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 49.71ms. Allocated memory is still 182.5MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] int i = 0; VAL [a={-1:0}, i=0, p={-1:0}] [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i < 30 && __VERIFIER_nondet_int()=0, i=0, p={-1:0}] [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i VAL [a={-1:0}, i=0, p={-1:0}] [L546] p->n = 0 [L547] p = a [L548] i = 0 VAL [a={-1:0}, i=0, p={-1:0}] [L549] COND TRUE p!=0 VAL [a={-1:0}, i=0, p={-1:0}] [L550] EXPR p->h VAL [a={-1:0}, i=0, p->h=0, p={-1:0}] [L550] COND TRUE p->h != 1 [L551] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "simple-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 216 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 88 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=3, 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, 4 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-06 20:34:30,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3380ab4-32dc-4e4b-accf-5e2bc587bc76/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)