./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:17:56,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:17:56,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:17:56,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:17:56,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:17:56,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:17:56,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:17:56,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:17:56,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:17:56,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:17:56,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:17:56,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:17:56,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:17:56,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:17:56,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:17:56,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:17:56,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:17:56,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:17:56,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:17:56,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:17:56,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:17:56,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:17:56,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:17:56,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:17:56,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:17:56,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:17:56,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:17:56,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:17:56,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:17:56,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:17:56,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:17:56,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:17:56,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:17:56,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:17:56,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:17:56,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:17:56,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:17:56,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:17:56,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:17:56,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:17:56,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:17:56,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-16 16:17:56,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:17:56,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:17:56,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:17:56,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:17:56,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:17:56,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:17:56,115 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:17:56,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:17:56,115 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:17:56,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:17:56,117 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:17:56,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:17:56,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:17:56,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:17:56,118 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:17:56,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:17:56,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:17:56,118 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:17:56,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:17:56,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:17:56,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:17:56,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:17:56,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:17:56,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:17:56,120 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:17:56,120 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:17:56,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:17:56,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:17:56,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:17:56,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:17:56,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:17:56,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:17:56,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:17:56,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:17:56,123 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:17:56,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:17:56,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:17:56,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:17:56,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:17:56,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2022-11-16 16:17:56,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:17:56,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:17:56,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:17:56,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:17:56,449 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:17:56,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-16 16:17:56,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/00d579d16/b1457bac9e654e81a49adebda104ac0c/FLAGfab23adb5 [2022-11-16 16:17:56,959 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:17:56,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-16 16:17:56,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/00d579d16/b1457bac9e654e81a49adebda104ac0c/FLAGfab23adb5 [2022-11-16 16:17:57,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/00d579d16/b1457bac9e654e81a49adebda104ac0c [2022-11-16 16:17:57,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:17:57,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:17:57,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:17:57,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:17:57,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:17:57,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371e7d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57, skipping insertion in model container [2022-11-16 16:17:57,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:17:57,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:17:57,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:17:57,575 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:17:57,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:17:57,622 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:17:57,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57 WrapperNode [2022-11-16 16:17:57,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:17:57,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:17:57,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:17:57,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:17:57,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,661 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-16 16:17:57,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:17:57,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:17:57,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:17:57,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:17:57,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:17:57,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:17:57,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:17:57,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:17:57,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:17:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:17:57,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:17:57,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:17:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:17:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:17:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2022-11-16 16:17:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2022-11-16 16:17:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:17:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:17:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:17:57,884 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:17:57,887 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:17:58,099 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:17:58,130 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:17:58,130 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:17:58,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:17:58 BoogieIcfgContainer [2022-11-16 16:17:58,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:17:58,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:17:58,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:17:58,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:17:58,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:17:57" (1/3) ... [2022-11-16 16:17:58,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34950ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:17:58, skipping insertion in model container [2022-11-16 16:17:58,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57" (2/3) ... [2022-11-16 16:17:58,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34950ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:17:58, skipping insertion in model container [2022-11-16 16:17:58,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:17:58" (3/3) ... [2022-11-16 16:17:58,158 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2022-11-16 16:17:58,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:17:58,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-16 16:17:58,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:17:58,263 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;@7eccec82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:17:58,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 16:17:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 12 states have (on average 2.25) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:17:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 16:17:58,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:17:58,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 16:17:58,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-16 16:17:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:17:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash 73879, now seen corresponding path program 1 times [2022-11-16 16:17:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:17:58,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205529226] [2022-11-16 16:17:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:17:58,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:17:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:17:58,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:17:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:17:58,419 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:17:58,421 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:17:58,422 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-11-16 16:17:58,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-11-16 16:17:58,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-11-16 16:17:58,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-11-16 16:17:58,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-11-16 16:17:58,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-11-16 16:17:58,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-11-16 16:17:58,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-11-16 16:17:58,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2022-11-16 16:17:58,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2022-11-16 16:17:58,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2022-11-16 16:17:58,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-11-16 16:17:58,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2022-11-16 16:17:58,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:17:58,434 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 16:17:58,439 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:17:58,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:17:58 BoogieIcfgContainer [2022-11-16 16:17:58,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:17:58,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:17:58,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:17:58,461 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:17:58,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:17:58" (3/4) ... [2022-11-16 16:17:58,465 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 16:17:58,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:17:58,466 INFO L158 Benchmark]: Toolchain (without parser) took 1113.91ms. Allocated memory is still 121.6MB. Free memory was 84.4MB in the beginning and 69.5MB in the end (delta: 14.9MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-11-16 16:17:58,467 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 121.6MB. Free memory was 101.5MB in the beginning and 101.4MB in the end (delta: 122.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:17:58,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.34ms. Allocated memory is still 121.6MB. Free memory was 84.2MB in the beginning and 98.9MB in the end (delta: -14.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:17:58,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.43ms. Allocated memory is still 121.6MB. Free memory was 98.9MB in the beginning and 97.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:17:58,469 INFO L158 Benchmark]: Boogie Preprocessor took 46.37ms. Allocated memory is still 121.6MB. Free memory was 97.9MB in the beginning and 96.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:17:58,469 INFO L158 Benchmark]: RCFGBuilder took 423.09ms. Allocated memory is still 121.6MB. Free memory was 96.3MB in the beginning and 84.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:17:58,470 INFO L158 Benchmark]: TraceAbstraction took 325.06ms. Allocated memory is still 121.6MB. Free memory was 83.7MB in the beginning and 70.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 16:17:58,470 INFO L158 Benchmark]: Witness Printer took 5.00ms. Allocated memory is still 121.6MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:17:58,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 121.6MB. Free memory was 101.5MB in the beginning and 101.4MB in the end (delta: 122.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.34ms. Allocated memory is still 121.6MB. Free memory was 84.2MB in the beginning and 98.9MB in the end (delta: -14.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.43ms. Allocated memory is still 121.6MB. Free memory was 98.9MB in the beginning and 97.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.37ms. Allocated memory is still 121.6MB. Free memory was 97.9MB in the beginning and 96.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 423.09ms. Allocated memory is still 121.6MB. Free memory was 96.3MB in the beginning and 84.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 325.06ms. Allocated memory is still 121.6MB. Free memory was 83.7MB in the beginning and 70.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.00ms. Allocated memory is still 121.6MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={-1:0}, i=0, upper=0] - 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces [2022-11-16 16:17:58,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:18:00,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:18:00,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:18:00,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:18:00,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:18:00,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:18:00,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:18:00,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:18:00,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:18:00,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:18:00,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:18:00,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:18:00,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:18:00,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:18:00,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:18:00,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:18:00,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:18:00,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:18:00,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:18:00,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:18:00,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:18:01,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:18:01,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:18:01,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:18:01,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:18:01,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:18:01,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:18:01,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:18:01,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:18:01,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:18:01,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:18:01,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:18:01,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:18:01,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:18:01,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:18:01,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:18:01,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:18:01,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:18:01,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:18:01,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:18:01,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:18:01,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2022-11-16 16:18:01,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:18:01,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:18:01,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:18:01,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:18:01,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:18:01,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:18:01,067 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:18:01,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:18:01,067 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:18:01,067 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:18:01,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:18:01,068 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:18:01,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:18:01,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:18:01,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:18:01,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:18:01,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:18:01,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:18:01,070 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:18:01,071 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:18:01,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:18:01,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:18:01,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:18:01,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 16:18:01,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 16:18:01,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:18:01,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:18:01,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 16:18:01,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:18:01,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:18:01,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:18:01,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:18:01,074 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 16:18:01,074 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 16:18:01,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:18:01,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 16:18:01,077 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2022-11-16 16:18:01,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:18:01,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:18:01,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:18:01,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:18:01,554 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:18:01,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-16 16:18:01,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/7aa67080f/653b0c5a7f12461490dfb904efeb89c7/FLAG00b7043be [2022-11-16 16:18:02,131 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:18:02,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-16 16:18:02,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/7aa67080f/653b0c5a7f12461490dfb904efeb89c7/FLAG00b7043be [2022-11-16 16:18:02,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/data/7aa67080f/653b0c5a7f12461490dfb904efeb89c7 [2022-11-16 16:18:02,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:18:02,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:18:02,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:18:02,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:18:02,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:18:02,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa6cacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02, skipping insertion in model container [2022-11-16 16:18:02,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:18:02,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:18:02,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:18:02,650 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:18:02,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:18:02,693 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:18:02,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02 WrapperNode [2022-11-16 16:18:02,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:18:02,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:18:02,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:18:02,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:18:02,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,739 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-11-16 16:18:02,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:18:02,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:18:02,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:18:02,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:18:02,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:18:02,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:18:02,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:18:02,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:18:02,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (1/1) ... [2022-11-16 16:18:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:18:02,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:18:02,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:18:02,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 16:18:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2022-11-16 16:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2022-11-16 16:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:18:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:18:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 16:18:02,961 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:18:02,963 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:18:03,301 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:18:03,307 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:18:03,308 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:18:03,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:18:03 BoogieIcfgContainer [2022-11-16 16:18:03,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:18:03,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:18:03,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:18:03,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:18:03,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:18:02" (1/3) ... [2022-11-16 16:18:03,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef7e6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:03, skipping insertion in model container [2022-11-16 16:18:03,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:02" (2/3) ... [2022-11-16 16:18:03,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef7e6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:03, skipping insertion in model container [2022-11-16 16:18:03,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:18:03" (3/3) ... [2022-11-16 16:18:03,318 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2022-11-16 16:18:03,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:18:03,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-16 16:18:03,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:18:03,390 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;@4ab3c152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:18:03,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 16:18:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 1.9375) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:18:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:18:03,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:18:03,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:18:03,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-16 16:18:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:18:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2022-11-16 16:18:03,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:18:03,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075872643] [2022-11-16 16:18:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:18:03,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:18:03,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:18:03,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:18:03,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 16:18:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:18:03,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:18:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:18:03,533 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-16 16:18:03,535 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:18:03,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-11-16 16:18:03,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-11-16 16:18:03,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-11-16 16:18:03,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-11-16 16:18:03,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-11-16 16:18:03,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-11-16 16:18:03,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-11-16 16:18:03,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-11-16 16:18:03,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2022-11-16 16:18:03,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2022-11-16 16:18:03,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2022-11-16 16:18:03,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-11-16 16:18:03,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2022-11-16 16:18:03,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:18:03,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:18:03,768 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 16:18:03,773 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:18:03,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:18:03 BoogieIcfgContainer [2022-11-16 16:18:03,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:18:03,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:18:03,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:18:03,792 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:18:03,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:18:03" (3/4) ... [2022-11-16 16:18:03,796 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 16:18:03,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:18:03,797 INFO L158 Benchmark]: Toolchain (without parser) took 1327.43ms. Allocated memory is still 73.4MB. Free memory was 56.0MB in the beginning and 38.3MB in the end (delta: 17.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-16 16:18:03,798 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 73.4MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:18:03,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.46ms. Allocated memory is still 73.4MB. Free memory was 55.7MB in the beginning and 46.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:18:03,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.42ms. Allocated memory is still 73.4MB. Free memory was 46.0MB in the beginning and 44.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:18:03,800 INFO L158 Benchmark]: Boogie Preprocessor took 37.99ms. Allocated memory is still 73.4MB. Free memory was 44.7MB in the beginning and 43.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:18:03,801 INFO L158 Benchmark]: RCFGBuilder took 530.69ms. Allocated memory is still 73.4MB. Free memory was 43.3MB in the beginning and 51.8MB in the end (delta: -8.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-11-16 16:18:03,801 INFO L158 Benchmark]: TraceAbstraction took 479.20ms. Allocated memory is still 73.4MB. Free memory was 50.9MB in the beginning and 38.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:18:03,802 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 38.3MB in the end (delta: 557.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:18:03,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 73.4MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.46ms. Allocated memory is still 73.4MB. Free memory was 55.7MB in the beginning and 46.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.42ms. Allocated memory is still 73.4MB. Free memory was 46.0MB in the beginning and 44.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.99ms. Allocated memory is still 73.4MB. Free memory was 44.7MB in the beginning and 43.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 530.69ms. Allocated memory is still 73.4MB. Free memory was 43.3MB in the beginning and 51.8MB in the end (delta: -8.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 479.20ms. Allocated memory is still 73.4MB. Free memory was 50.9MB in the beginning and 38.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 38.3MB in the end (delta: 557.8kB). 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 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={1:0}, i=0, upper=0] - 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces [2022-11-16 16:18:03,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5826005f-beb7-4946-bfe7-094255830d2d/bin/utaipan-Xvt2sAort0/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: UNKNOWN: Overapproximated counterexample