./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/HarrisLalNoriRajamani-2010SAS-Fig3-alloca.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_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/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_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/HarrisLalNoriRajamani-2010SAS-Fig3-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/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_2b570e3b-1d15-42c2-8274-bf9421f3c457/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 ec52b50984ce4a37adbf31241337a0752ee4ecf2eb9496b3e3fee60fba9a59cc --- 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 19:55:55,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:55:55,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:55:55,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:55:55,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:55:55,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:55:55,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:55:55,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:55:55,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:55:55,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:55:55,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:55:55,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:55:55,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:55:55,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:55:55,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:55:55,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:55:55,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:55:55,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:55:55,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:55:55,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:55:55,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:55:55,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:55:55,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:55:55,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:55:55,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:55:55,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:55:55,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:55:55,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:55:55,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:55:55,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:55:55,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:55:55,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:55:55,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:55:55,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:55:55,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:55:55,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:55:55,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:55:55,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:55:55,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:55:55,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:55:55,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:55:55,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-16 19:55:55,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:55:55,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:55:55,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:55:55,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:55:55,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:55:55,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:55:55,566 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:55:55,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:55:55,566 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:55:55,566 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:55:55,567 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:55:55,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:55:55,567 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:55:55,567 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:55:55,568 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:55:55,568 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:55:55,568 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:55:55,569 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:55:55,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 19:55:55,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 19:55:55,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:55:55,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:55:55,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:55:55,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:55:55,571 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 19:55:55,571 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 19:55:55,571 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 19:55:55,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:55:55,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:55:55,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:55:55,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:55:55,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:55:55,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:55,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:55:55,574 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:55:55,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:55:55,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:55:55,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:55:55,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:55:55,575 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_2b570e3b-1d15-42c2-8274-bf9421f3c457/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec52b50984ce4a37adbf31241337a0752ee4ecf2eb9496b3e3fee60fba9a59cc [2022-11-16 19:55:55,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:55:55,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:55:55,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:55:55,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:55:55,865 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:55:55,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/termination-memory-alloca/HarrisLalNoriRajamani-2010SAS-Fig3-alloca.i [2022-11-16 19:55:55,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/data/5fe8b96b5/25c27bfe513f4854859280dc3424af6c/FLAG50f0edad9 [2022-11-16 19:55:56,574 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:55:56,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/sv-benchmarks/c/termination-memory-alloca/HarrisLalNoriRajamani-2010SAS-Fig3-alloca.i [2022-11-16 19:55:56,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/data/5fe8b96b5/25c27bfe513f4854859280dc3424af6c/FLAG50f0edad9 [2022-11-16 19:55:56,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/data/5fe8b96b5/25c27bfe513f4854859280dc3424af6c [2022-11-16 19:55:56,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:55:56,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:55:56,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:56,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:55:56,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:55:56,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:56" (1/1) ... [2022-11-16 19:55:56,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e5b002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:56, skipping insertion in model container [2022-11-16 19:55:56,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:56" (1/1) ... [2022-11-16 19:55:56,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:55:56,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:55:57,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:57,285 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:55:57,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:57,341 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:55:57,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57 WrapperNode [2022-11-16 19:55:57,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:57,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:57,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:55:57,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:55:57,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,397 INFO L138 Inliner]: procedures = 111, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2022-11-16 19:55:57,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:57,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:55:57,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:55:57,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:55:57,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:55:57,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:55:57,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:55:57,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:55:57,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (1/1) ... [2022-11-16 19:55:57,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:57,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:57,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:55:57,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:55:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:55:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:55:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:55:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:55:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-11-16 19:55:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-11-16 19:55:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:55:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:55:57,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:55:57,665 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:55:57,802 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:55:57,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:55:57,833 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 19:55:57,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:57 BoogieIcfgContainer [2022-11-16 19:55:57,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:55:57,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:55:57,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:55:57,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:55:57,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:55:56" (1/3) ... [2022-11-16 19:55:57,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d37a7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:57, skipping insertion in model container [2022-11-16 19:55:57,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:57" (2/3) ... [2022-11-16 19:55:57,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d37a7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:57, skipping insertion in model container [2022-11-16 19:55:57,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:57" (3/3) ... [2022-11-16 19:55:57,865 INFO L112 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-2010SAS-Fig3-alloca.i [2022-11-16 19:55:57,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:55:57,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-11-16 19:55:57,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:55:57,985 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;@181fab67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:55:57,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 19:55:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 11 states have (on average 2.090909090909091) internal successors, (23), 20 states have internal predecessors, (23), 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 19:55:57,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 19:55:57,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:58,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 19:55:58,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 19:55:58,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2586, now seen corresponding path program 1 times [2022-11-16 19:55:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:58,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126729345] [2022-11-16 19:55:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:58,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:58,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:58,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126729345] [2022-11-16 19:55:58,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126729345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:58,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:58,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 19:55:58,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542777060] [2022-11-16 19:55:58,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:58,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:58,412 INFO L87 Difference]: Start difference. First operand has 24 states, 11 states have (on average 2.090909090909091) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-16 19:55:58,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:58,501 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-16 19:55:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:58,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-16 19:55:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:58,517 INFO L225 Difference]: With dead ends: 20 [2022-11-16 19:55:58,517 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 19:55:58,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:58,524 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:58,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 11 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:55:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 19:55:58,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 19:55:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 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 19:55:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-16 19:55:58,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 2 [2022-11-16 19:55:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:58,576 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-16 19:55:58,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-16 19:55:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-16 19:55:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 19:55:58,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:58,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 19:55:58,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:55:58,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 19:55:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2587, now seen corresponding path program 1 times [2022-11-16 19:55:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:58,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999297107] [2022-11-16 19:55:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:58,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:58,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999297107] [2022-11-16 19:55:58,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999297107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:58,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:58,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 19:55:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373969272] [2022-11-16 19:55:58,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:58,772 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-16 19:55:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:58,791 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-16 19:55:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:58,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-16 19:55:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:58,793 INFO L225 Difference]: With dead ends: 15 [2022-11-16 19:55:58,793 INFO L226 Difference]: Without dead ends: 15 [2022-11-16 19:55:58,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:58,795 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:58,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:55:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-16 19:55:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-16 19:55:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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 19:55:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-16 19:55:58,804 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 2 [2022-11-16 19:55:58,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:58,805 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-16 19:55:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-16 19:55:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-16 19:55:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:55:58,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:58,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:55:58,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:55:58,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-16 19:55:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1869179991, now seen corresponding path program 1 times [2022-11-16 19:55:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:58,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358688567] [2022-11-16 19:55:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:58,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:58,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358688567] [2022-11-16 19:55:58,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358688567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:58,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:58,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663650870] [2022-11-16 19:55:58,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:58,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:55:58,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:58,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:55:58,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:55:58,941 INFO L87 Difference]: Start difference. First operand 15 states and 17 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) [2022-11-16 19:55:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:58,967 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-11-16 19:55:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:55:58,968 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 [2022-11-16 19:55:58,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:58,969 INFO L225 Difference]: With dead ends: 14 [2022-11-16 19:55:58,969 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 19:55:58,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:55:58,971 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:58,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:55:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 19:55:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 19:55:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 19:55:58,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-11-16 19:55:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:58,974 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 19:55:58,974 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) [2022-11-16 19:55:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 19:55:58,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 19:55:58,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2022-11-16 19:55:58,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2022-11-16 19:55:58,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2022-11-16 19:55:58,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-11-16 19:55:58,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2022-11-16 19:55:58,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2022-11-16 19:55:58,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2022-11-16 19:55:58,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2022-11-16 19:55:58,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2022-11-16 19:55:58,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:55:58,984 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 19:55:58,987 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:55:58,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:55:58 BoogieIcfgContainer [2022-11-16 19:55:58,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:55:58,992 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:55:58,992 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:55:58,992 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:55:58,993 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:57" (3/4) ... [2022-11-16 19:55:58,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 19:55:59,003 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2022-11-16 19:55:59,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-16 19:55:59,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 19:55:59,009 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 19:55:59,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 19:55:59,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:55:59,046 INFO L158 Benchmark]: Toolchain (without parser) took 2160.08ms. Allocated memory is still 146.8MB. Free memory was 110.0MB in the beginning and 57.7MB in the end (delta: 52.3MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2022-11-16 19:55:59,046 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:55:59,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.23ms. Allocated memory is still 146.8MB. Free memory was 109.8MB in the beginning and 117.0MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 19:55:59,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.50ms. Allocated memory is still 146.8MB. Free memory was 117.0MB in the beginning and 115.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:55:59,048 INFO L158 Benchmark]: Boogie Preprocessor took 44.64ms. Allocated memory is still 146.8MB. Free memory was 115.7MB in the beginning and 114.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:55:59,048 INFO L158 Benchmark]: RCFGBuilder took 393.05ms. Allocated memory is still 146.8MB. Free memory was 114.3MB in the beginning and 101.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 19:55:59,049 INFO L158 Benchmark]: TraceAbstraction took 1152.56ms. Allocated memory is still 146.8MB. Free memory was 101.0MB in the beginning and 59.8MB in the end (delta: 41.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-16 19:55:59,049 INFO L158 Benchmark]: Witness Printer took 53.33ms. Allocated memory is still 146.8MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:55:59,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 456.23ms. Allocated memory is still 146.8MB. Free memory was 109.8MB in the beginning and 117.0MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.50ms. Allocated memory is still 146.8MB. Free memory was 117.0MB in the beginning and 115.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.64ms. Allocated memory is still 146.8MB. Free memory was 115.7MB in the beginning and 114.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 393.05ms. Allocated memory is still 146.8MB. Free memory was 114.3MB in the beginning and 101.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1152.56ms. Allocated memory is still 146.8MB. Free memory was 101.0MB in the beginning and 59.8MB in the end (delta: 41.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 53.33ms. Allocated memory is still 146.8MB. Free memory was 59.8MB in the beginning and 57.7MB 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 33 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 19:55:59,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b570e3b-1d15-42c2-8274-bf9421f3c457/bin/utaipan-Xvt2sAort0/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 Result: TRUE