./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba --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 717baf941b5233bcdd3406dedb0f8a4ec61d7d81c585f16d362540f6a1da773f --- 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-b5237d8 [2022-11-22 02:41:26,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:41:26,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:41:26,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:41:26,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:41:26,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:41:26,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:41:26,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:41:26,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:41:26,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:41:26,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:41:26,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:41:26,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:41:26,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:41:26,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:41:26,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:41:26,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:41:26,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:41:26,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:41:26,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:41:26,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:41:26,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:41:26,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:41:26,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:41:26,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:41:26,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:41:26,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:41:26,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:41:26,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:41:26,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:41:26,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:41:26,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:41:26,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:41:26,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:41:26,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:41:26,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:41:26,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:41:26,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:41:26,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:41:26,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:41:26,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:41:26,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-22 02:41:26,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:41:26,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:41:26,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:41:26,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:41:26,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:41:26,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:41:26,490 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:41:26,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:41:26,491 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:41:26,491 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:41:26,492 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:41:26,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:41:26,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:41:26,493 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:41:26,493 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:41:26,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:41:26,494 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:41:26,494 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:41:26,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 02:41:26,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 02:41:26,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:41:26,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:41:26,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:41:26,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:41:26,497 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 02:41:26,498 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 02:41:26,498 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 02:41:26,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:41:26,498 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:41:26,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:41:26,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:41:26,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:41:26,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:41:26,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:41:26,500 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:41:26,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:41:26,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:41:26,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:41:26,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:41:26,502 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_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 717baf941b5233bcdd3406dedb0f8a4ec61d7d81c585f16d362540f6a1da773f [2022-11-22 02:41:26,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:41:26,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:41:26,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:41:26,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:41:26,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:41:26,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i [2022-11-22 02:41:30,007 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:41:30,307 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:41:30,311 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i [2022-11-22 02:41:30,325 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/data/590a31359/0824bb530b4445209368e68769011dd3/FLAGaca5e5c13 [2022-11-22 02:41:30,344 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/data/590a31359/0824bb530b4445209368e68769011dd3 [2022-11-22 02:41:30,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:41:30,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:41:30,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:41:30,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:41:30,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:41:30,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5495a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30, skipping insertion in model container [2022-11-22 02:41:30,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:41:30,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:41:30,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:41:30,731 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:41:30,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:41:30,787 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:41:30,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30 WrapperNode [2022-11-22 02:41:30,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:41:30,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:41:30,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:41:30,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:41:30,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,841 INFO L138 Inliner]: procedures = 111, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-11-22 02:41:30,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:41:30,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:41:30,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:41:30,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:41:30,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:41:30,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:41:30,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:41:30,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:41:30,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (1/1) ... [2022-11-22 02:41:30,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:41:30,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:41:30,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:41:30,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:41:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:41:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:41:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:41:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:41:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:41:31,075 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:41:31,078 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:41:31,250 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:41:31,290 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:41:31,303 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:41:31,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:41:31 BoogieIcfgContainer [2022-11-22 02:41:31,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:41:31,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:41:31,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:41:31,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:41:31,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:41:30" (1/3) ... [2022-11-22 02:41:31,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d57c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:41:31, skipping insertion in model container [2022-11-22 02:41:31,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:41:30" (2/3) ... [2022-11-22 02:41:31,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d57c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:41:31, skipping insertion in model container [2022-11-22 02:41:31,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:41:31" (3/3) ... [2022-11-22 02:41:31,332 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-1.i [2022-11-22 02:41:31,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:41:31,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:41:31,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:41:31,409 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;@21188e3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:41:31,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:41:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-22 02:41:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:41:31,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:31,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:41:31,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-22 02:41:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash 76485, now seen corresponding path program 1 times [2022-11-22 02:41:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:31,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939893658] [2022-11-22 02:41:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:31,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:31,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939893658] [2022-11-22 02:41:31,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939893658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:31,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:31,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:41:31,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915561035] [2022-11-22 02:41:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:31,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:41:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:41:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:31,760 INFO L87 Difference]: Start difference. First operand has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:41:31,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:31,823 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-11-22 02:41:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:41:31,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:41:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:31,836 INFO L225 Difference]: With dead ends: 12 [2022-11-22 02:41:31,836 INFO L226 Difference]: Without dead ends: 10 [2022-11-22 02:41:31,839 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 [2022-11-22 02:41:31,844 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:31,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:41:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-22 02:41:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-22 02:41:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:41:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-22 02:41:31,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2022-11-22 02:41:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:31,880 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-22 02:41:31,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:41:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-22 02:41:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:41:31,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:31,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:41:31,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:41:31,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-22 02:41:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:31,886 INFO L85 PathProgramCache]: Analyzing trace with hash 73547189, now seen corresponding path program 1 times [2022-11-22 02:41:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:31,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847354469] [2022-11-22 02:41:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:32,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:32,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847354469] [2022-11-22 02:41:32,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847354469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:32,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:32,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:41:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024204219] [2022-11-22 02:41:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:32,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:41:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:41:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:41:32,158 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:41:32,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:32,188 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-11-22 02:41:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:41:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:41:32,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:32,189 INFO L225 Difference]: With dead ends: 9 [2022-11-22 02:41:32,189 INFO L226 Difference]: Without dead ends: 9 [2022-11-22 02:41:32,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:41:32,191 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:32,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:41:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-22 02:41:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-22 02:41:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-22 02:41:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 02:41:32,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 02:41:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:32,196 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 02:41:32,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:41:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 02:41:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:41:32,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:32,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:41:32,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:41:32,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-22 02:41:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 73547190, now seen corresponding path program 1 times [2022-11-22 02:41:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:32,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269036484] [2022-11-22 02:41:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:32,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:32,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269036484] [2022-11-22 02:41:32,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269036484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:32,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:32,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:41:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532880199] [2022-11-22 02:41:32,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:32,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:41:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:41:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:41:32,585 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:41:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:32,633 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-22 02:41:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:41:32,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:41:32,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:32,634 INFO L225 Difference]: With dead ends: 15 [2022-11-22 02:41:32,635 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 02:41:32,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:41:32,636 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:32,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:41:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 02:41:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2022-11-22 02:41:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-11-22 02:41:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-22 02:41:32,641 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2022-11-22 02:41:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:32,641 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-22 02:41:32,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:41:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-22 02:41:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:41:32,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:32,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:41:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:41:32,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-22 02:41:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2015006103, now seen corresponding path program 1 times [2022-11-22 02:41:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234250792] [2022-11-22 02:41:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:32,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:32,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234250792] [2022-11-22 02:41:32,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234250792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:32,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:32,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:41:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829632743] [2022-11-22 02:41:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:41:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:32,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:41:32,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:41:32,877 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-22 02:41:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:32,938 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-22 02:41:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:41:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 [2022-11-22 02:41:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:32,941 INFO L225 Difference]: With dead ends: 12 [2022-11-22 02:41:32,941 INFO L226 Difference]: Without dead ends: 12 [2022-11-22 02:41:32,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:41:32,949 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:32,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:41:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-22 02:41:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-22 02:41:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-22 02:41:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 02:41:32,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2022-11-22 02:41:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:32,954 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 02:41:32,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-22 02:41:32,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 02:41:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:41:32,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:32,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-22 02:41:32,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:41:32,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-22 02:41:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash 611396824, now seen corresponding path program 1 times [2022-11-22 02:41:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:32,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220064896] [2022-11-22 02:41:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:32,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:33,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:33,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220064896] [2022-11-22 02:41:33,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220064896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:41:33,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329122818] [2022-11-22 02:41:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:33,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:41:33,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:41:33,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:41:33,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:41:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:33,765 WARN L261 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-22 02:41:33,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:41:33,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:41:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:34,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:41:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:34,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329122818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:41:34,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [711440001] [2022-11-22 02:41:34,990 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 02:41:34,990 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:41:34,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:41:35,001 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:41:35,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:41:35,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:41:35,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:41:35,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:41:35,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:41:35,494 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:41:36,142 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '197#(and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_cbzero_~b#1.offset| 0) (<= |ULTIMATE.start_cbzero_#in~length#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= |ULTIMATE.start_cbzero_~length#1| 2147483646) (<= 0 |ULTIMATE.start_cbzero_~p~0#1.base|) (<= 1 |ULTIMATE.start_cbzero_~p~0#1.offset|) (<= |ULTIMATE.start_cbzero_#in~b#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.base|) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.offset|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_#t~malloc6#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length~0#1|) (< (select |#length| |ULTIMATE.start_cbzero_#t~post3#1.base|) (+ |ULTIMATE.start_cbzero_#t~post3#1.offset| 1)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc6#1.base|) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_cbzero_~b#1.offset|) (<= 0 |ULTIMATE.start_cbzero_~b#1.base|) (<= 1 |ULTIMATE.start_cbzero_#in~length#1|) (= |#NULL.base| 0))' at error location [2022-11-22 02:41:36,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:41:36,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:41:36,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-22 02:41:36,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100618508] [2022-11-22 02:41:36,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:41:36,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 02:41:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 02:41:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2022-11-22 02:41:36,145 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-11-22 02:41:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:36,737 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-22 02:41:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:41:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 8 [2022-11-22 02:41:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:36,738 INFO L225 Difference]: With dead ends: 15 [2022-11-22 02:41:36,738 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 02:41:36,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:41:36,740 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:36,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 27 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:41:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 02:41:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-22 02:41:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-11-22 02:41:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-22 02:41:36,743 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2022-11-22 02:41:36,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:36,744 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-22 02:41:36,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-11-22 02:41:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-22 02:41:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:41:36,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:36,745 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:36,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:41:36,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:41:36,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-22 02:41:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1773430663, now seen corresponding path program 1 times [2022-11-22 02:41:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:36,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85039475] [2022-11-22 02:41:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:41:37,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:37,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85039475] [2022-11-22 02:41:37,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85039475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:37,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:37,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:41:37,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151765817] [2022-11-22 02:41:37,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:37,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:41:37,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:37,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:41:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:41:37,068 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 02:41:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:37,079 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-22 02:41:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:41:37,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2022-11-22 02:41:37,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:37,080 INFO L225 Difference]: With dead ends: 14 [2022-11-22 02:41:37,081 INFO L226 Difference]: Without dead ends: 12 [2022-11-22 02:41:37,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:41:37,082 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:37,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:41:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-22 02:41:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-22 02:41:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-22 02:41:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 02:41:37,085 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-11-22 02:41:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:37,086 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 02:41:37,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 02:41:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 02:41:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:41:37,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:37,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1] [2022-11-22 02:41:37,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:41:37,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-22 02:41:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -833138058, now seen corresponding path program 2 times [2022-11-22 02:41:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999878929] [2022-11-22 02:41:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:37,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:37,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999878929] [2022-11-22 02:41:37,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999878929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:41:37,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165363592] [2022-11-22 02:41:37,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:41:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:41:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:41:37,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:41:37,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:41:37,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 02:41:37,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:41:37,964 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-22 02:41:37,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:41:38,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:41:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:38,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:41:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:39,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165363592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:41:39,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1357792919] [2022-11-22 02:41:39,774 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 02:41:39,774 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:41:39,774 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:41:39,775 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:41:39,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:41:39,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:41:39,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:41:39,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:41:40,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:41:40,078 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:41:40,702 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '368#(and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_cbzero_~b#1.offset| 0) (<= |ULTIMATE.start_cbzero_#in~length#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= |ULTIMATE.start_cbzero_~length#1| 2147483646) (<= 0 |ULTIMATE.start_cbzero_~p~0#1.base|) (<= 1 |ULTIMATE.start_cbzero_~p~0#1.offset|) (<= |ULTIMATE.start_cbzero_#in~b#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.base|) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.offset|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_#t~malloc6#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length~0#1|) (< (select |#length| |ULTIMATE.start_cbzero_#t~post3#1.base|) (+ |ULTIMATE.start_cbzero_#t~post3#1.offset| 1)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc6#1.base|) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_cbzero_~b#1.offset|) (<= 0 |ULTIMATE.start_cbzero_~b#1.base|) (<= 1 |ULTIMATE.start_cbzero_#in~length#1|) (= |#NULL.base| 0))' at error location [2022-11-22 02:41:40,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:41:40,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:41:40,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-11-22 02:41:40,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398590814] [2022-11-22 02:41:40,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:41:40,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 02:41:40,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 02:41:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 02:41:40,705 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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) [2022-11-22 02:41:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:42,049 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-22 02:41:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:41:42,051 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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 11 [2022-11-22 02:41:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:42,052 INFO L225 Difference]: With dead ends: 14 [2022-11-22 02:41:42,052 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:41:42,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=308, Invalid=2044, Unknown=0, NotChecked=0, Total=2352 [2022-11-22 02:41:42,054 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:42,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:41:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:41:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:41:42,055 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) [2022-11-22 02:41:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:41:42,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-22 02:41:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:42,056 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:41:42,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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) [2022-11-22 02:41:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:41:42,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:41:42,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2022-11-22 02:41:42,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2022-11-22 02:41:42,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2022-11-22 02:41:42,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:41:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:41:42,273 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-22 02:41:42,275 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:41:42,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:41:42 BoogieIcfgContainer [2022-11-22 02:41:42,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:41:42,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:41:42,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:41:42,279 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:41:42,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:41:31" (3/4) ... [2022-11-22 02:41:42,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:41:42,294 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-22 02:41:42,295 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-22 02:41:42,295 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:41:42,295 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:41:42,333 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:41:42,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:41:42,334 INFO L158 Benchmark]: Toolchain (without parser) took 11984.10ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 99.5MB in the beginning and 94.2MB in the end (delta: 5.3MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. [2022-11-22 02:41:42,334 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:41:42,335 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.48ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 83.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 02:41:42,335 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.65ms. Allocated memory is still 136.3MB. Free memory was 83.8MB in the beginning and 82.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:41:42,336 INFO L158 Benchmark]: Boogie Preprocessor took 30.75ms. Allocated memory is still 136.3MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:41:42,337 INFO L158 Benchmark]: RCFGBuilder took 439.58ms. Allocated memory is still 136.3MB. Free memory was 81.2MB in the beginning and 69.1MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:41:42,337 INFO L158 Benchmark]: TraceAbstraction took 10961.77ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 68.1MB in the beginning and 97.3MB in the end (delta: -29.3MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2022-11-22 02:41:42,337 INFO L158 Benchmark]: Witness Printer took 54.22ms. Allocated memory is still 222.3MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:41:42,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.48ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 83.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.65ms. Allocated memory is still 136.3MB. Free memory was 83.8MB in the beginning and 82.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.75ms. Allocated memory is still 136.3MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.58ms. Allocated memory is still 136.3MB. Free memory was 81.2MB in the beginning and 69.1MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10961.77ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 68.1MB in the beginning and 97.3MB in the end (delta: -29.3MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Witness Printer took 54.22ms. Allocated memory is still 222.3MB. Free memory was 96.3MB in the beginning and 94.2MB 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: 554]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 321 IncrementalHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 28 mSDtfsCounter, 321 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, InterpolantAutomatonStates: 46, 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, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 1579 SizeOfPredicates, 25 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 2/38 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 02:41:42,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d51cd3-17cd-471e-89dc-354d9bbf1edb/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE