./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-15/cstrcpy_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/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_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-15/cstrcpy_reverse_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/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_311f85db-34fa-4ac2-a8b3-f2244bbb008d/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 cf36d0c9351c4c2fb1711d3f7c837e0253db9403415afa1c4469ec7ba9a72414 --- 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 02:29:38,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:29:38,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:29:38,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:29:38,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:29:38,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:29:38,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:29:38,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:29:38,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:29:38,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:29:38,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:29:38,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:29:38,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:29:38,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:29:38,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:29:38,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:29:38,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:29:38,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:29:38,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:29:38,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:29:38,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:29:38,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:29:38,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:29:38,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:29:38,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:29:38,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:29:38,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:29:38,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:29:38,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:29:38,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:29:38,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:29:38,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:29:38,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:29:38,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:29:38,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:29:38,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:29:38,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:29:38,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:29:38,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:29:38,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:29:38,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:29:38,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-22 02:29:38,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:29:38,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:29:38,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:29:38,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:29:38,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:29:38,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:29:38,319 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:29:38,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:29:38,320 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:29:38,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:29:38,320 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:29:38,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:29:38,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:29:38,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:29:38,321 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:29:38,321 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:29:38,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:29:38,322 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:29:38,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 02:29:38,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 02:29:38,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:29:38,323 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:29:38,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:29:38,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:29:38,324 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 02:29:38,324 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 02:29:38,325 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 02:29:38,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:29:38,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:29:38,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:29:38,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:29:38,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:29:38,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:29:38,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:29:38,327 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:29:38,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:29:38,327 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:29:38,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:29:38,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:29:38,328 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_311f85db-34fa-4ac2-a8b3-f2244bbb008d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf36d0c9351c4c2fb1711d3f7c837e0253db9403415afa1c4469ec7ba9a72414 [2022-11-22 02:29:38,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:29:38,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:29:38,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:29:38,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:29:38,589 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:29:38,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-15/cstrcpy_reverse_alloca.i [2022-11-22 02:29:41,686 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:29:41,950 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:29:41,951 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/sv-benchmarks/c/termination-15/cstrcpy_reverse_alloca.i [2022-11-22 02:29:41,962 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/data/7efb684d7/d565a72e41ca4ed5845589627015a04f/FLAG7de1ea68f [2022-11-22 02:29:41,978 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/data/7efb684d7/d565a72e41ca4ed5845589627015a04f [2022-11-22 02:29:41,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:29:41,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:29:41,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:29:41,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:29:41,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:29:41,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:29:41" (1/1) ... [2022-11-22 02:29:41,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d35f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:41, skipping insertion in model container [2022-11-22 02:29:41,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:29:41" (1/1) ... [2022-11-22 02:29:42,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:29:42,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:29:42,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:29:42,383 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:29:42,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:29:42,503 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:29:42,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42 WrapperNode [2022-11-22 02:29:42,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:29:42,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:29:42,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:29:42,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:29:42,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,566 INFO L138 Inliner]: procedures = 152, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-22 02:29:42,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:29:42,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:29:42,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:29:42,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:29:42,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:29:42,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:29:42,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:29:42,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:29:42,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (1/1) ... [2022-11-22 02:29:42,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:29:42,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:29:42,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:29:42,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:29:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:29:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:29:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:29:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:29:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:29:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:29:42,860 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:29:42,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:29:43,126 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:29:43,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:29:43,189 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:29:43,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:29:43 BoogieIcfgContainer [2022-11-22 02:29:43,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:29:43,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:29:43,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:29:43,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:29:43,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:29:41" (1/3) ... [2022-11-22 02:29:43,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bde32c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:29:43, skipping insertion in model container [2022-11-22 02:29:43,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:42" (2/3) ... [2022-11-22 02:29:43,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bde32c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:29:43, skipping insertion in model container [2022-11-22 02:29:43,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:29:43" (3/3) ... [2022-11-22 02:29:43,200 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcpy_reverse_alloca.i [2022-11-22 02:29:43,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:29:43,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-22 02:29:43,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:29:43,327 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;@21ad5b2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:29:43,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-22 02:29:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 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 02:29:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:29:43,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:43,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:29:43,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash 85142, now seen corresponding path program 1 times [2022-11-22 02:29:43,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:43,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930012173] [2022-11-22 02:29:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:43,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:43,535 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 02:29:43,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:43,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930012173] [2022-11-22 02:29:43,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930012173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:43,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:43,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:29:43,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718981558] [2022-11-22 02:29:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:43,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:43,582 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 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 02:29:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:43,630 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-22 02:29:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:43,655 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 02:29:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:43,663 INFO L225 Difference]: With dead ends: 18 [2022-11-22 02:29:43,663 INFO L226 Difference]: Without dead ends: 16 [2022-11-22 02:29:43,665 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 02:29:43,671 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:43,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:29:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-22 02:29:43,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-22 02:29:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 15 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 02:29:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-22 02:29:43,726 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2022-11-22 02:29:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:43,726 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-22 02:29:43,727 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 02:29:43,729 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-22 02:29:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:29:43,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:43,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:29:43,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:29:43,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:43,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash 85178, now seen corresponding path program 1 times [2022-11-22 02:29:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020485032] [2022-11-22 02:29:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:43,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:44,016 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 02:29:44,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:44,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020485032] [2022-11-22 02:29:44,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020485032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:44,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:44,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:29:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474272522] [2022-11-22 02:29:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:44,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:44,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:44,021 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 02:29:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:44,044 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-22 02:29:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 02:29:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:44,045 INFO L225 Difference]: With dead ends: 15 [2022-11-22 02:29:44,046 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 02:29:44,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:29:44,047 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:44,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:29:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 02:29:44,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-22 02:29:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 14 states have internal predecessors, (15), 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 02:29:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 02:29:44,051 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2022-11-22 02:29:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:44,052 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 02:29:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 02:29:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 02:29:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:29:44,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:44,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:29:44,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:29:44,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash 85179, now seen corresponding path program 1 times [2022-11-22 02:29:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:44,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9366539] [2022-11-22 02:29:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:44,353 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 02:29:44,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:44,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9366539] [2022-11-22 02:29:44,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9366539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:44,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:44,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:29:44,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633875965] [2022-11-22 02:29:44,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:44,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:29:44,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:44,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:29:44,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:29:44,357 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 02:29:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:44,410 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-22 02:29:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:29:44,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 02:29:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:44,411 INFO L225 Difference]: With dead ends: 14 [2022-11-22 02:29:44,412 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 02:29:44,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:29:44,414 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:44,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:29:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 02:29:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-22 02:29:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 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 02:29:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-22 02:29:44,418 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2022-11-22 02:29:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:44,418 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-22 02:29:44,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 02:29:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-22 02:29:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:29:44,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:44,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:29:44,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:29:44,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 81884825, now seen corresponding path program 1 times [2022-11-22 02:29:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:44,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486781653] [2022-11-22 02:29:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:44,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:44,583 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 02:29:44,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486781653] [2022-11-22 02:29:44,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486781653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:44,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:44,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:29:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949708950] [2022-11-22 02:29:44,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:44,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:29:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:44,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:29:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:29:44,586 INFO L87 Difference]: Start difference. First operand 14 states and 14 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 02:29:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:44,623 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-22 02:29:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:29:44,624 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 02:29:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:44,625 INFO L225 Difference]: With dead ends: 13 [2022-11-22 02:29:44,625 INFO L226 Difference]: Without dead ends: 13 [2022-11-22 02:29:44,625 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 02:29:44,627 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:44,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:29:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-22 02:29:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-22 02:29:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 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 02:29:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-22 02:29:44,631 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2022-11-22 02:29:44,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:44,632 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-22 02:29:44,632 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 02:29:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-22 02:29:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:29:44,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:44,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:29:44,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:29:44,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:44,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash 81884826, now seen corresponding path program 1 times [2022-11-22 02:29:44,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:44,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102216156] [2022-11-22 02:29:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:45,020 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 02:29:45,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:45,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102216156] [2022-11-22 02:29:45,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102216156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:45,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:45,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:29:45,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113469894] [2022-11-22 02:29:45,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:45,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:29:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:45,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:29:45,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:29:45,026 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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 02:29:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:45,147 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-22 02:29:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:29:45,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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 02:29:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:45,149 INFO L225 Difference]: With dead ends: 15 [2022-11-22 02:29:45,149 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 02:29:45,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:29:45,151 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:45,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:29:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 02:29:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-22 02:29:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 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 02:29:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 02:29:45,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2022-11-22 02:29:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:45,156 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 02:29:45,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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 02:29:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 02:29:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:29:45,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:45,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:29:45,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:29:45,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:45,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1756537719, now seen corresponding path program 1 times [2022-11-22 02:29:45,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:45,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500139055] [2022-11-22 02:29:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:45,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:45,350 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 02:29:45,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:45,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500139055] [2022-11-22 02:29:45,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500139055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:45,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:45,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:29:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067834099] [2022-11-22 02:29:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:45,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:29:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:29:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:29:45,354 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 02:29:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:45,400 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-22 02:29:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:29:45,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 02:29:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:45,401 INFO L225 Difference]: With dead ends: 14 [2022-11-22 02:29:45,401 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 02:29:45,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:29:45,403 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:45,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 5 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:29:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 02:29:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-22 02:29:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 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 02:29:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-22 02:29:45,413 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2022-11-22 02:29:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:45,414 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-22 02:29:45,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 02:29:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-22 02:29:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:29:45,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:45,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:29:45,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:29:45,416 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:45,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:45,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1756537718, now seen corresponding path program 1 times [2022-11-22 02:29:45,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:45,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9099413] [2022-11-22 02:29:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:45,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:45,669 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 02:29:45,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:45,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9099413] [2022-11-22 02:29:45,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9099413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:45,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:45,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:29:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772521872] [2022-11-22 02:29:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:29:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:29:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:29:45,673 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 02:29:45,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:45,766 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-22 02:29:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:29:45,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 02:29:45,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:45,767 INFO L225 Difference]: With dead ends: 15 [2022-11-22 02:29:45,769 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 02:29:45,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:29:45,775 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:45,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:29:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 02:29:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-22 02:29:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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 02:29:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 02:29:45,783 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2022-11-22 02:29:45,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:45,783 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 02:29:45,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 02:29:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 02:29:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:29:45,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:45,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:29:45,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash 866355129, now seen corresponding path program 1 times [2022-11-22 02:29:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:45,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603338592] [2022-11-22 02:29:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:45,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:45,980 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 02:29:45,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:45,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603338592] [2022-11-22 02:29:45,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603338592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:45,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:45,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:29:45,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301869988] [2022-11-22 02:29:45,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:45,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:29:45,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:45,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:29:45,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:29:45,983 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 02:29:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:46,000 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-22 02:29:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:29:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9 [2022-11-22 02:29:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:46,001 INFO L225 Difference]: With dead ends: 14 [2022-11-22 02:29:46,001 INFO L226 Difference]: Without dead ends: 12 [2022-11-22 02:29:46,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 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 02:29:46,002 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:46,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:29:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-22 02:29:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-22 02:29:46,004 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 02:29:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 02:29:46,005 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-11-22 02:29:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:46,005 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 02:29:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 02:29:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 02:29:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:29:46,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:46,007 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:29:46,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:46,008 INFO L85 PathProgramCache]: Analyzing trace with hash 866356322, now seen corresponding path program 1 times [2022-11-22 02:29:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:46,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432300818] [2022-11-22 02:29:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:46,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432300818] [2022-11-22 02:29:46,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432300818] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:29:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589272009] [2022-11-22 02:29:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:46,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:29:46,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:29:46,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:29:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:46,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-22 02:29:46,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:29:46,584 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 02:29:46,585 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-22 02:29:46,604 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 02:29:46,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:29:46,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-22 02:29:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:46,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:29:47,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-11-22 02:29:47,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-22 02:29:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:47,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589272009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:29:47,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [950212452] [2022-11-22 02:29:47,104 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:29:47,105 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:29:47,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:29:47,115 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:29:47,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:29:47,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:29:47,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-22 02:29:47,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 12 [2022-11-22 02:29:47,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:29:47,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:29:47,468 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-22 02:29:47,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2022-11-22 02:29:47,689 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 02:29:47,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:29:47,844 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 02:29:47,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:29:47,865 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:29:49,055 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '367#(and (<= 0 |ULTIMATE.start_cstrcpy_#in~s1#1.offset|) (= |ULTIMATE.start_main_#t~malloc210#1.offset| 0) (= |ULTIMATE.start_cstrcpy_#t~post206#1.offset| (+ |ULTIMATE.start_cstrcpy_~src~0#1.offset| 1)) (<= 0 |ULTIMATE.start_cstrcpy_#t~post205#1.base|) (<= |ULTIMATE.start_cstrcpy_#t~post205#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (= (+ |ULTIMATE.start_cstrcpy_~dst~0#1.offset| 1) |ULTIMATE.start_cstrcpy_#t~post205#1.offset|) (= |ULTIMATE.start_cstrcpy_~dst~0#1.base| |ULTIMATE.start_cstrcpy_#t~post205#1.base|) (= |ULTIMATE.start_cstrcpy_#t~post206#1.base| |ULTIMATE.start_cstrcpy_~src~0#1.base|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= |ULTIMATE.start_cstrcpy_~s2#1.offset| 2147483646) (= |ULTIMATE.start_main_#t~malloc211#1.offset| 0) (<= |ULTIMATE.start_cstrcpy_#in~s1#1.offset| 2147483646) (<= |ULTIMATE.start_cstrcpy_#in~s2#1.offset| 2147483646) (<= 0 |ULTIMATE.start_cstrcpy_~s1#1.offset|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= |ULTIMATE.start_cstrcpy_~s1#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s2#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~s2#1.base|) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.offset|) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (or (not (<= (+ |ULTIMATE.start_cstrcpy_#t~post206#1.offset| 1) (select |#length| |ULTIMATE.start_cstrcpy_#t~post206#1.base|))) (not (<= 0 |ULTIMATE.start_cstrcpy_#t~post206#1.offset|))) (= |#NULL.offset| 0) (<= |ULTIMATE.start_cstrcpy_#t~post206#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_#t~malloc210#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s2#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc211#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s1#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#t~post206#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= |ULTIMATE.start_main_~nondetString~0#1.offset| 2147483646) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 2147483646) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_cstrcpy_~s1#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~s2#1.offset|))' at error location [2022-11-22 02:29:49,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:29:49,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:29:49,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-22 02:29:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095558025] [2022-11-22 02:29:49,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:29:49,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:29:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:29:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:29:49,057 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 02:29:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:49,304 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-22 02:29:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:29:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 02:29:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:49,305 INFO L225 Difference]: With dead ends: 18 [2022-11-22 02:29:49,305 INFO L226 Difference]: Without dead ends: 18 [2022-11-22 02:29:49,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-11-22 02:29:49,306 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:49,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:29:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-22 02:29:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2022-11-22 02:29:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 02:29:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 02:29:49,309 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2022-11-22 02:29:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:49,310 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 02:29:49,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 02:29:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 02:29:49,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:29:49,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:49,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:49,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:29:49,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:49,518 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:49,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1087242178, now seen corresponding path program 1 times [2022-11-22 02:29:49,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:49,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111866672] [2022-11-22 02:29:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:49,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:49,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111866672] [2022-11-22 02:29:49,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111866672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:29:49,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666443448] [2022-11-22 02:29:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:49,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:49,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:29:49,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:29:49,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:29:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:49,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-22 02:29:49,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:29:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:49,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:29:50,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:29:50,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2022-11-22 02:29:50,171 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 02:29:50,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666443448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:29:50,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931095815] [2022-11-22 02:29:50,184 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:29:50,184 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:29:50,184 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:29:50,184 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:29:50,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:29:50,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:29:50,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-22 02:29:50,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-22 02:29:50,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:29:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:29:50,393 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 02:29:50,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 02:29:50,535 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 02:29:50,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:29:50,636 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 02:29:50,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:29:50,659 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:29:51,817 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '481#(and (<= 0 |ULTIMATE.start_cstrcpy_#in~s1#1.offset|) (= |ULTIMATE.start_main_#t~malloc210#1.offset| 0) (= |ULTIMATE.start_cstrcpy_#t~post206#1.offset| (+ |ULTIMATE.start_cstrcpy_~src~0#1.offset| 1)) (<= 0 |ULTIMATE.start_cstrcpy_#t~post206#1.offset|) (<= (+ |ULTIMATE.start_cstrcpy_#t~post206#1.offset| 1) (select |#length| |ULTIMATE.start_cstrcpy_#t~post206#1.base|)) (<= 0 |ULTIMATE.start_cstrcpy_#t~post205#1.base|) (<= |ULTIMATE.start_cstrcpy_#t~post205#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (= (+ |ULTIMATE.start_cstrcpy_~dst~0#1.offset| 1) |ULTIMATE.start_cstrcpy_#t~post205#1.offset|) (= |ULTIMATE.start_cstrcpy_~dst~0#1.base| |ULTIMATE.start_cstrcpy_#t~post205#1.base|) (= |ULTIMATE.start_cstrcpy_#t~post206#1.base| |ULTIMATE.start_cstrcpy_~src~0#1.base|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= |ULTIMATE.start_cstrcpy_~s2#1.offset| 2147483646) (= |ULTIMATE.start_main_#t~malloc211#1.offset| 0) (<= |ULTIMATE.start_cstrcpy_#in~s1#1.offset| 2147483646) (<= |ULTIMATE.start_cstrcpy_#in~s2#1.offset| 2147483646) (<= 0 |ULTIMATE.start_cstrcpy_~s1#1.offset|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= |ULTIMATE.start_cstrcpy_~s1#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.base|) (or (not (<= (+ |ULTIMATE.start_cstrcpy_#t~post205#1.offset| 1) (select |#length| |ULTIMATE.start_cstrcpy_#t~post205#1.base|))) (not (<= 0 |ULTIMATE.start_cstrcpy_#t~post205#1.offset|))) (= (select |#valid| |ULTIMATE.start_cstrcpy_#t~post206#1.base|) 1) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s2#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~s2#1.base|) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.offset|) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_cstrcpy_#t~post206#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_#t~malloc210#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_cstrcpy_#t~post206#1.base|) |ULTIMATE.start_cstrcpy_#t~post206#1.offset|) |ULTIMATE.start_cstrcpy_#t~mem207#1|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s2#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc211#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s1#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#t~post206#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= |ULTIMATE.start_main_~nondetString~0#1.offset| 2147483646) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 2147483646) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_cstrcpy_~s1#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~s2#1.offset|))' at error location [2022-11-22 02:29:51,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:29:51,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:29:51,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-22 02:29:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052806832] [2022-11-22 02:29:51,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:29:51,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:29:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:51,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:29:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:29:51,820 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 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 02:29:52,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:52,087 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-22 02:29:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:29:52,089 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 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 10 [2022-11-22 02:29:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:52,089 INFO L225 Difference]: With dead ends: 14 [2022-11-22 02:29:52,089 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 02:29:52,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2022-11-22 02:29:52,091 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:52,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:29:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 02:29:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-22 02:29:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 02:29:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-22 02:29:52,093 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2022-11-22 02:29:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:52,093 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-22 02:29:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 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 02:29:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-22 02:29:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 02:29:52,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:52,094 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2022-11-22 02:29:52,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:29:52,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:52,300 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-22 02:29:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1683324458, now seen corresponding path program 2 times [2022-11-22 02:29:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:52,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613397736] [2022-11-22 02:29:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:52,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613397736] [2022-11-22 02:29:52,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613397736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:29:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413037964] [2022-11-22 02:29:52,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:29:52,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:29:52,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:29:52,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:29:52,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:29:52,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 02:29:52,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:29:52,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-22 02:29:52,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:29:52,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-22 02:29:52,919 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 9 treesize of output 11 [2022-11-22 02:29:52,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-22 02:29:53,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:29:53,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:29:53,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-22 02:29:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:53,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:29:53,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:29:53,745 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-22 02:29:53,756 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:29:53,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2022-11-22 02:29:53,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-22 02:29:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:29:53,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413037964] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:29:53,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [273856903] [2022-11-22 02:29:53,883 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:29:53,883 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:29:53,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:29:53,884 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:29:53,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:29:53,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:29:53,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-22 02:29:53,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-22 02:29:54,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:29:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:29:54,089 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 02:29:54,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 02:29:54,224 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 02:29:54,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:29:54,327 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 02:29:54,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:29:54,347 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:29:55,580 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '624#(and (<= 0 |ULTIMATE.start_cstrcpy_#in~s1#1.offset|) (= |ULTIMATE.start_main_#t~malloc210#1.offset| 0) (= |ULTIMATE.start_cstrcpy_#t~post206#1.offset| (+ |ULTIMATE.start_cstrcpy_~src~0#1.offset| 1)) (<= 0 |ULTIMATE.start_cstrcpy_#t~post205#1.base|) (<= |ULTIMATE.start_cstrcpy_#t~post205#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (= (+ |ULTIMATE.start_cstrcpy_~dst~0#1.offset| 1) |ULTIMATE.start_cstrcpy_#t~post205#1.offset|) (= |ULTIMATE.start_cstrcpy_~dst~0#1.base| |ULTIMATE.start_cstrcpy_#t~post205#1.base|) (= |ULTIMATE.start_cstrcpy_#t~post206#1.base| |ULTIMATE.start_cstrcpy_~src~0#1.base|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= |ULTIMATE.start_cstrcpy_~s2#1.offset| 2147483646) (= |ULTIMATE.start_main_#t~malloc211#1.offset| 0) (<= |ULTIMATE.start_cstrcpy_#in~s1#1.offset| 2147483646) (<= |ULTIMATE.start_cstrcpy_#in~s2#1.offset| 2147483646) (<= 0 |ULTIMATE.start_cstrcpy_~s1#1.offset|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= |ULTIMATE.start_cstrcpy_~s1#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s2#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~s2#1.base|) (<= 0 |ULTIMATE.start_main_~nondetString~0#1.offset|) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (or (not (<= (+ |ULTIMATE.start_cstrcpy_#t~post206#1.offset| 1) (select |#length| |ULTIMATE.start_cstrcpy_#t~post206#1.base|))) (not (<= 0 |ULTIMATE.start_cstrcpy_#t~post206#1.offset|))) (= |#NULL.offset| 0) (<= |ULTIMATE.start_cstrcpy_#t~post206#1.offset| 2147483646) (<= 0 |ULTIMATE.start_main_#t~malloc210#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s2#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc211#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#in~s1#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_#t~post206#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= |ULTIMATE.start_main_~nondetString~0#1.offset| 2147483646) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 2147483646) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_cstrcpy_~s1#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~s2#1.offset|))' at error location [2022-11-22 02:29:55,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:29:55,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:29:55,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-11-22 02:29:55,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563635987] [2022-11-22 02:29:55,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:29:55,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:29:55,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:55,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:29:55,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=827, Unknown=1, NotChecked=0, Total=930 [2022-11-22 02:29:55,582 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 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 02:29:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:56,100 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-22 02:29:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:29:56,100 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 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 13 [2022-11-22 02:29:56,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:56,101 INFO L225 Difference]: With dead ends: 15 [2022-11-22 02:29:56,101 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:29:56,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=225, Invalid=1256, Unknown=1, NotChecked=0, Total=1482 [2022-11-22 02:29:56,102 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:56,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:29:56,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:29:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:29:56,103 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 02:29:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:29:56,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-22 02:29:56,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:56,104 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:29:56,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 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 02:29:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:29:56,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:29:56,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2022-11-22 02:29:56,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2022-11-22 02:29:56,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2022-11-22 02:29:56,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2022-11-22 02:29:56,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2022-11-22 02:29:56,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2022-11-22 02:29:56,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-11-22 02:29:56,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:29:56,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:29:56,312 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:56,314 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:29:56,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:29:56 BoogieIcfgContainer [2022-11-22 02:29:56,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:29:56,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:29:56,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:29:56,318 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:29:56,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:29:43" (3/4) ... [2022-11-22 02:29:56,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:29:56,332 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-22 02:29:56,332 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-22 02:29:56,332 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:29:56,333 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:29:56,374 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:29:56,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:29:56,375 INFO L158 Benchmark]: Toolchain (without parser) took 14391.83ms. Allocated memory was 144.7MB in the beginning and 222.3MB in the end (delta: 77.6MB). Free memory was 105.5MB in the beginning and 97.6MB in the end (delta: 8.0MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2022-11-22 02:29:56,376 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:29:56,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.07ms. Allocated memory is still 144.7MB. Free memory was 105.1MB in the beginning and 87.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 02:29:56,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.15ms. Allocated memory is still 144.7MB. Free memory was 87.6MB in the beginning and 85.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:29:56,377 INFO L158 Benchmark]: Boogie Preprocessor took 59.49ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 84.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:29:56,377 INFO L158 Benchmark]: RCFGBuilder took 563.90ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 84.6MB in the beginning and 152.1MB in the end (delta: -67.5MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-11-22 02:29:56,378 INFO L158 Benchmark]: TraceAbstraction took 13123.70ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 151.1MB in the beginning and 100.2MB in the end (delta: 50.9MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2022-11-22 02:29:56,378 INFO L158 Benchmark]: Witness Printer took 56.20ms. Allocated memory is still 222.3MB. Free memory was 100.2MB in the beginning and 97.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:29:56,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.07ms. Allocated memory is still 144.7MB. Free memory was 105.1MB in the beginning and 87.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.15ms. Allocated memory is still 144.7MB. Free memory was 87.6MB in the beginning and 85.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.49ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 84.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 563.90ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 84.6MB in the beginning and 152.1MB in the end (delta: -67.5MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13123.70ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 151.1MB in the beginning and 100.2MB in the end (delta: 50.9MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * Witness Printer took 56.20ms. Allocated memory is still 222.3MB. Free memory was 100.2MB in the beginning and 97.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 372]: 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, 17 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 432 IncrementalHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 64 mSDtfsCounter, 432 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 119 ConstructedInterpolants, 6 QuantifiedInterpolants, 1664 SizeOfPredicates, 47 NumberOfNonLiveVariables, 448 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2/39 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 02:29:56,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311f85db-34fa-4ac2-a8b3-f2244bbb008d/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