./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/relax-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V --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 32bit --witnessprinter.graph.data.programhash 4fcae0c4d0ca1fc30eac1578cd8b45001717e96b8c9c5f68d5df56e6c4fcd72c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:00:44,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:00:44,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:00:44,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:00:44,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:00:44,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:00:44,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:00:44,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:00:44,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:00:44,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:00:44,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:00:44,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:00:44,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:00:44,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:00:44,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:00:44,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:00:44,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:00:44,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:00:44,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:00:44,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:00:44,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:00:44,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:00:44,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:00:44,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:00:44,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:00:44,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:00:44,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:00:44,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:00:44,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:00:44,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:00:44,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:00:44,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:00:44,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:00:44,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:00:44,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:00:44,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:00:44,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:00:44,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:00:44,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:00:44,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:00:44,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:00:44,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:00:44,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:00:44,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:00:44,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:00:44,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:00:44,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:00:44,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:00:44,468 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:00:44,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:00:44,469 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:00:44,469 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:00:44,471 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:00:44,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:00:44,471 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:00:44,472 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:00:44,472 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:00:44,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:00:44,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:00:44,473 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:00:44,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:00:44,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:00:44,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:00:44,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:00:44,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:00:44,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:00:44,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:00:44,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:00:44,478 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:00:44,479 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:00:44,479 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:00:44,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:00:44,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:00:44,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:00:44,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:00:44,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:00:44,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:00:44,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:00:44,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:00:44,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:00:44,482 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:00:44,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:00:44,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:00:44,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:00:44,483 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fcae0c4d0ca1fc30eac1578cd8b45001717e96b8c9c5f68d5df56e6c4fcd72c [2021-11-23 03:00:44,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:00:44,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:00:44,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:00:44,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:00:44,849 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:00:44,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/array-examples/relax-1.i [2021-11-23 03:00:44,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/data/6bf52c2c1/43d78c441a634ca1aa49b02c44863438/FLAGcd1c674d7 [2021-11-23 03:00:45,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:00:45,567 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/sv-benchmarks/c/array-examples/relax-1.i [2021-11-23 03:00:45,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/data/6bf52c2c1/43d78c441a634ca1aa49b02c44863438/FLAGcd1c674d7 [2021-11-23 03:00:45,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/data/6bf52c2c1/43d78c441a634ca1aa49b02c44863438 [2021-11-23 03:00:45,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:00:45,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:00:45,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:00:45,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:00:45,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:00:45,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:00:45" (1/1) ... [2021-11-23 03:00:45,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53241891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:45, skipping insertion in model container [2021-11-23 03:00:45,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:00:45" (1/1) ... [2021-11-23 03:00:45,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:00:45,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:00:46,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-11-23 03:00:46,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:00:46,344 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:00:46,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-11-23 03:00:46,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:00:46,459 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:00:46,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46 WrapperNode [2021-11-23 03:00:46,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:00:46,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:00:46,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:00:46,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:00:46,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,545 INFO L137 Inliner]: procedures = 120, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 127 [2021-11-23 03:00:46,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:00:46,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:00:46,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:00:46,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:00:46,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:00:46,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:00:46,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:00:46,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:00:46,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (1/1) ... [2021-11-23 03:00:46,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:00:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:46,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:00:46,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:00:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:00:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:00:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:00:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:00:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:00:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:00:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:00:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:00:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:00:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:00:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:00:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:00:46,861 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:00:46,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:00:47,276 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:00:47,340 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:00:47,341 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 03:00:47,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:47 BoogieIcfgContainer [2021-11-23 03:00:47,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:00:47,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:00:47,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:00:47,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:00:47,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:00:45" (1/3) ... [2021-11-23 03:00:47,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478d3594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:00:47, skipping insertion in model container [2021-11-23 03:00:47,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:46" (2/3) ... [2021-11-23 03:00:47,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478d3594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:00:47, skipping insertion in model container [2021-11-23 03:00:47,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:47" (3/3) ... [2021-11-23 03:00:47,379 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-1.i [2021-11-23 03:00:47,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:00:47,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-11-23 03:00:47,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:00:47,463 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:00:47,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-11-23 03:00:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 76 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:00:47,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:00:47,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:47,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:00:47,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 03:00:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 6978303, now seen corresponding path program 1 times [2021-11-23 03:00:47,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:47,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912705415] [2021-11-23 03:00:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:47,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:47,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:47,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912705415] [2021-11-23 03:00:47,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912705415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:47,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:47,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 03:00:47,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110682315] [2021-11-23 03:00:47,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:47,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:00:47,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:00:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:00:47,824 INFO L87 Difference]: Start difference. First operand has 83 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 76 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:00:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:47,987 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2021-11-23 03:00:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:00:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-23 03:00:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:48,002 INFO L225 Difference]: With dead ends: 82 [2021-11-23 03:00:48,002 INFO L226 Difference]: Without dead ends: 81 [2021-11-23 03:00:48,004 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:00:48,009 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 67 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:48,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 71 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:00:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-23 03:00:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-23 03:00:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 74 states have internal predecessors, (84), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:00:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2021-11-23 03:00:48,094 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 4 [2021-11-23 03:00:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:48,095 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-11-23 03:00:48,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:00:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2021-11-23 03:00:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:00:48,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:48,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:00:48,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:00:48,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 03:00:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 6978304, now seen corresponding path program 1 times [2021-11-23 03:00:48,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:48,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398122147] [2021-11-23 03:00:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:48,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:00:48,184 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:00:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:00:48,299 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:00:48,299 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:00:48,305 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (31 of 32 remaining) [2021-11-23 03:00:48,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (30 of 32 remaining) [2021-11-23 03:00:48,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (29 of 32 remaining) [2021-11-23 03:00:48,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (28 of 32 remaining) [2021-11-23 03:00:48,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (27 of 32 remaining) [2021-11-23 03:00:48,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (26 of 32 remaining) [2021-11-23 03:00:48,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (25 of 32 remaining) [2021-11-23 03:00:48,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (24 of 32 remaining) [2021-11-23 03:00:48,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (23 of 32 remaining) [2021-11-23 03:00:48,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (22 of 32 remaining) [2021-11-23 03:00:48,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (21 of 32 remaining) [2021-11-23 03:00:48,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (20 of 32 remaining) [2021-11-23 03:00:48,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (19 of 32 remaining) [2021-11-23 03:00:48,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (18 of 32 remaining) [2021-11-23 03:00:48,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (17 of 32 remaining) [2021-11-23 03:00:48,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (16 of 32 remaining) [2021-11-23 03:00:48,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (15 of 32 remaining) [2021-11-23 03:00:48,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (14 of 32 remaining) [2021-11-23 03:00:48,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (13 of 32 remaining) [2021-11-23 03:00:48,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (12 of 32 remaining) [2021-11-23 03:00:48,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (11 of 32 remaining) [2021-11-23 03:00:48,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (10 of 32 remaining) [2021-11-23 03:00:48,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (9 of 32 remaining) [2021-11-23 03:00:48,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (8 of 32 remaining) [2021-11-23 03:00:48,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (7 of 32 remaining) [2021-11-23 03:00:48,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (6 of 32 remaining) [2021-11-23 03:00:48,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (5 of 32 remaining) [2021-11-23 03:00:48,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (4 of 32 remaining) [2021-11-23 03:00:48,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (3 of 32 remaining) [2021-11-23 03:00:48,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (2 of 32 remaining) [2021-11-23 03:00:48,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (1 of 32 remaining) [2021-11-23 03:00:48,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 32 remaining) [2021-11-23 03:00:48,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:00:48,330 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 03:00:48,335 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:00:48,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:00:48 BoogieIcfgContainer [2021-11-23 03:00:48,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:00:48,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:00:48,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:00:48,364 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:00:48,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:47" (3/4) ... [2021-11-23 03:00:48,367 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:00:48,413 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd21113-7e74-4c04-b8da-a147cd26843a/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:00:48,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:00:48,414 INFO L158 Benchmark]: Toolchain (without parser) took 2581.03ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 56.2MB in the beginning and 60.7MB in the end (delta: -4.5MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2021-11-23 03:00:48,414 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:00:48,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.38ms. Allocated memory is still 98.6MB. Free memory was 56.0MB in the beginning and 64.3MB in the end (delta: -8.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-23 03:00:48,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.89ms. Allocated memory is still 98.6MB. Free memory was 64.3MB in the beginning and 62.0MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:00:48,416 INFO L158 Benchmark]: Boogie Preprocessor took 32.79ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 60.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:00:48,417 INFO L158 Benchmark]: RCFGBuilder took 763.74ms. Allocated memory is still 98.6MB. Free memory was 60.2MB in the beginning and 40.0MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 03:00:48,418 INFO L158 Benchmark]: TraceAbstraction took 1016.80ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 39.6MB in the beginning and 62.8MB in the end (delta: -23.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:00:48,418 INFO L158 Benchmark]: Witness Printer took 49.63ms. Allocated memory is still 119.5MB. Free memory was 62.8MB in the beginning and 60.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:00:48,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.38ms. Allocated memory is still 98.6MB. Free memory was 56.0MB in the beginning and 64.3MB in the end (delta: -8.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.89ms. Allocated memory is still 98.6MB. Free memory was 64.3MB in the beginning and 62.0MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.79ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 60.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 763.74ms. Allocated memory is still 98.6MB. Free memory was 60.2MB in the beginning and 40.0MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1016.80ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 39.6MB in the beginning and 62.8MB in the end (delta: -23.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 49.63ms. Allocated memory is still 119.5MB. Free memory was 62.8MB in the beginning and 60.7MB 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 - CounterExampleResult [Line: 584]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L600] int *pat=malloc(sizeof(int)*pat_len); [L601] int *a=malloc(sizeof(int)*a_len); [L602] CALL is_relaxed_prefix(pat, pat_len, a, a_len) [L579] COND FALSE !(pat_length>a_length+1) [L581] int shift=0; [L582] int i=0; VAL [\old(a_length)=2, \old(pat_length)=1, a={-2:0}, a={-2:0}, a_length=2, i=0, pat={-1:0}, pat={-1:0}, pat_length=1, shift=0] [L582] COND TRUE i