./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/basename-3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/basename-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh --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 2e90cfbacdda20e6be76d151b413bd2dd94f7cfd4eb0e599012526f6643aab85 --- 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-2329fc7 [2022-12-14 05:10:00,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:10:00,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:10:00,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:10:00,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:10:00,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:10:00,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:10:00,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:10:00,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:10:00,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:10:00,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:10:00,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:10:00,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:10:00,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:10:00,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:10:00,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:10:00,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:10:00,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:10:00,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:10:00,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:10:00,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:10:00,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:10:00,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:10:00,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:10:00,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:10:00,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:10:00,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:10:00,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:10:00,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:10:00,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:10:00,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:10:00,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:10:00,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:10:00,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:10:00,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:10:00,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:10:00,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:10:00,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:10:00,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:10:00,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:10:00,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:10:00,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-12-14 05:10:00,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:10:00,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:10:00,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:10:00,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:10:00,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:10:00,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:10:00,297 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:10:00,297 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:10:00,297 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:10:00,298 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:10:00,298 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:10:00,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:10:00,298 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:10:00,298 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:10:00,298 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:10:00,298 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:10:00,298 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:10:00,299 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:10:00,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 05:10:00,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 05:10:00,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:10:00,299 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:10:00,300 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:10:00,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:10:00,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:10:00,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:10:00,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:10:00,301 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:10:00,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:10:00,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:10:00,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:10:00,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:10:00,302 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_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e90cfbacdda20e6be76d151b413bd2dd94f7cfd4eb0e599012526f6643aab85 [2022-12-14 05:10:00,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:10:00,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:10:00,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:10:00,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:10:00,487 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:10:00,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-dietlibc/basename-3.i [2022-12-14 05:10:03,117 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:10:03,306 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:10:03,307 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/sv-benchmarks/c/termination-dietlibc/basename-3.i [2022-12-14 05:10:03,318 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/data/22f13a2ad/8e2a0d83170b498f8e91f8e30ebf51a1/FLAGb07fe42c3 [2022-12-14 05:10:03,331 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/data/22f13a2ad/8e2a0d83170b498f8e91f8e30ebf51a1 [2022-12-14 05:10:03,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:10:03,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:10:03,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:10:03,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:10:03,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:10:03,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447082a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03, skipping insertion in model container [2022-12-14 05:10:03,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:10:03,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:10:03,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:10:03,621 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:10:03,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:10:03,662 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:10:03,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03 WrapperNode [2022-12-14 05:10:03,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:10:03,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:10:03,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:10:03,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:10:03,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,691 INFO L138 Inliner]: procedures = 114, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-12-14 05:10:03,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:10:03,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:10:03,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:10:03,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:10:03,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,707 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:10:03,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:10:03,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:10:03,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:10:03,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (1/1) ... [2022-12-14 05:10:03,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:10:03,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:10:03,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:10:03,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:10:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:10:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:10:03,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:10:03,844 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:10:03,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:10:03,989 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:10:04,010 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:10:04,010 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:10:04,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:04 BoogieIcfgContainer [2022-12-14 05:10:04,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:10:04,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:10:04,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:10:04,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:10:04,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:10:03" (1/3) ... [2022-12-14 05:10:04,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3090b2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:04, skipping insertion in model container [2022-12-14 05:10:04,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:03" (2/3) ... [2022-12-14 05:10:04,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3090b2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:04, skipping insertion in model container [2022-12-14 05:10:04,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:04" (3/3) ... [2022-12-14 05:10:04,019 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-3.i [2022-12-14 05:10:04,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:10:04,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-14 05:10:04,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:10:04,070 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;@5193c4e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:10:04,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 05:10:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 2.0625) internal successors, (33), 27 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) [2022-12-14 05:10:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 05:10:04,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:04,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 05:10:04,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash 100169, now seen corresponding path program 1 times [2022-12-14 05:10:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:04,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480454217] [2022-12-14 05:10:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:04,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:04,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480454217] [2022-12-14 05:10:04,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480454217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:04,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:04,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 05:10:04,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241851626] [2022-12-14 05:10:04,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:10:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:10:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:10:04,225 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 2.0625) internal successors, (33), 27 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) 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) [2022-12-14 05:10:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:04,266 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 05:10:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:10:04,269 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 [2022-12-14 05:10:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:04,274 INFO L225 Difference]: With dead ends: 29 [2022-12-14 05:10:04,275 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 05:10:04,276 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 [2022-12-14 05:10:04,278 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:04,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:10:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 05:10:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 05:10:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.875) internal successors, (30), 26 states have internal predecessors, (30), 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) [2022-12-14 05:10:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-12-14 05:10:04,302 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 3 [2022-12-14 05:10:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:04,302 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-12-14 05:10:04,302 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) [2022-12-14 05:10:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-12-14 05:10:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 05:10:04,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:04,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 05:10:04,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:10:04,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash 100170, now seen corresponding path program 1 times [2022-12-14 05:10:04,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:04,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63260983] [2022-12-14 05:10:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:04,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:04,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63260983] [2022-12-14 05:10:04,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63260983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:04,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:04,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:10:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033961549] [2022-12-14 05:10:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:10:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:10:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:10:04,359 INFO L87 Difference]: Start difference. First operand 27 states and 30 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) [2022-12-14 05:10:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:04,382 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-12-14 05:10:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:10:04,383 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 [2022-12-14 05:10:04,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:04,383 INFO L225 Difference]: With dead ends: 26 [2022-12-14 05:10:04,383 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 05:10:04,384 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 [2022-12-14 05:10:04,385 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:04,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:10:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 05:10:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 05:10:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.8125) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-12-14 05:10:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-12-14 05:10:04,389 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 3 [2022-12-14 05:10:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:04,389 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-12-14 05:10:04,389 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) [2022-12-14 05:10:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-12-14 05:10:04,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 05:10:04,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:04,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 05:10:04,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:10:04,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:04,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:04,392 INFO L85 PathProgramCache]: Analyzing trace with hash 100171, now seen corresponding path program 1 times [2022-12-14 05:10:04,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:04,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147726548] [2022-12-14 05:10:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:04,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:04,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:04,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147726548] [2022-12-14 05:10:04,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147726548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:04,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:04,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:10:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101733587] [2022-12-14 05:10:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:04,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:10:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:10:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:10:04,541 INFO L87 Difference]: Start difference. First operand 26 states and 29 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) [2022-12-14 05:10:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:04,569 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-12-14 05:10:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:10:04,570 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 [2022-12-14 05:10:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:04,570 INFO L225 Difference]: With dead ends: 25 [2022-12-14 05:10:04,570 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 05:10:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:10:04,572 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 17 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 [2022-12-14 05:10:04,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:10:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 05:10:04,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 05:10:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-12-14 05:10:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-14 05:10:04,576 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 3 [2022-12-14 05:10:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:04,576 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-14 05:10:04,576 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) [2022-12-14 05:10:04,576 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-14 05:10:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:10:04,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:04,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:10:04,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:10:04,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:04,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1308823453, now seen corresponding path program 1 times [2022-12-14 05:10:04,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:04,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300049404] [2022-12-14 05:10:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:04,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:04,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:04,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300049404] [2022-12-14 05:10:04,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300049404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:04,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:04,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:10:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396613354] [2022-12-14 05:10:04,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:04,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:10:04,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:10:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:10:04,669 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:10:04,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:04,704 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-12-14 05:10:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:10:04,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 05:10:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:04,705 INFO L225 Difference]: With dead ends: 24 [2022-12-14 05:10:04,705 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 05:10:04,705 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 [2022-12-14 05:10:04,706 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:04,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 10 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:10:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 05:10:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-12-14 05:10:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.625) internal successors, (26), 22 states have internal predecessors, (26), 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) [2022-12-14 05:10:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-14 05:10:04,710 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2022-12-14 05:10:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:04,710 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-14 05:10:04,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:10:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-14 05:10:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:10:04,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:04,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:10:04,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:10:04,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:04,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1308823452, now seen corresponding path program 1 times [2022-12-14 05:10:04,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:04,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44520142] [2022-12-14 05:10:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:04,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:04,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:04,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44520142] [2022-12-14 05:10:04,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44520142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:04,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:04,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:10:04,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265409328] [2022-12-14 05:10:04,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:10:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:10:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:10:04,870 INFO L87 Difference]: Start difference. First operand 23 states and 26 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) [2022-12-14 05:10:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:04,950 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-12-14 05:10:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:10:04,951 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 [2022-12-14 05:10:04,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:04,951 INFO L225 Difference]: With dead ends: 41 [2022-12-14 05:10:04,951 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 05:10:04,952 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 [2022-12-14 05:10:04,952 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:04,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 21 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:10:04,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 05:10:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2022-12-14 05:10:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-12-14 05:10:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-12-14 05:10:04,955 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 6 [2022-12-14 05:10:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:04,955 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-12-14 05:10:04,956 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) [2022-12-14 05:10:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-12-14 05:10:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:10:04,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:04,956 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:10:04,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:10:04,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:04,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:04,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1835281435, now seen corresponding path program 1 times [2022-12-14 05:10:04,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:04,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36563966] [2022-12-14 05:10:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:04,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:05,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:05,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36563966] [2022-12-14 05:10:05,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36563966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:10:05,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218019675] [2022-12-14 05:10:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:05,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:10:05,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:10:05,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:10:05,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:10:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:05,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 05:10:05,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:10:05,321 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 14 treesize of output 10 [2022-12-14 05:10:05,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:10:05,488 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 18 treesize of output 19 [2022-12-14 05:10:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:05,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:10:05,744 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 13 treesize of output 11 [2022-12-14 05:10:05,748 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 16 treesize of output 12 [2022-12-14 05:10:05,755 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 22 treesize of output 20 [2022-12-14 05:10:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:05,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218019675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:10:05,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [191504439] [2022-12-14 05:10:05,779 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:10:05,779 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:10:05,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:10:05,786 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:10:05,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:10:05,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:10:05,829 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 14 treesize of output 10 [2022-12-14 05:10:06,093 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:10:07,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '399#(and (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= |ULTIMATE.start_strrchr_~c#1| 47) (<= 0 |ULTIMATE.start_basename_#in~path#1.offset|) (<= 0 |ULTIMATE.start_strrchr_#in~t#1.base|) (<= 0 |ULTIMATE.start_main_~in~0#1.offset|) (<= 0 |ULTIMATE.start_basename_#in~path#1.base|) (<= |ULTIMATE.start_strrchr_#in~t#1.offset| 0) (< (select |#length| |ULTIMATE.start_strrchr_~t#1.base|) (+ |ULTIMATE.start_strrchr_~t#1.offset| 1)) (<= |ULTIMATE.start_basename_#in~path#1.offset| 0) (<= 0 |ULTIMATE.start_strrchr_#in~t#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 47 |ULTIMATE.start_strrchr_~c#1|) (<= 0 |ULTIMATE.start_basename_~path#1.offset|) (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647) (<= |ULTIMATE.start_basename_~path#1.offset| 0) (<= 0 |ULTIMATE.start_strrchr_~t#1.offset|) (<= |ULTIMATE.start_strrchr_#in~c#1| 47) (<= 0 |ULTIMATE.start_main_~in~0#1.base|) (<= 0 |ULTIMATE.start_strrchr_~l~0#1.offset|) (<= 0 |ULTIMATE.start_strrchr_~t#1.base|) (<= |ULTIMATE.start_main_~in~0#1.offset| 0) (= |#NULL.offset| 0) (<= 47 |ULTIMATE.start_strrchr_#in~c#1|) (<= 0 |ULTIMATE.start_strrchr_~l~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_basename_~path#1.base|) (<= 1 |ULTIMATE.start_main_~in_len~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:10:07,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:10:07,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:10:07,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-12-14 05:10:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031013395] [2022-12-14 05:10:07,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:10:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 05:10:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:07,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 05:10:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-12-14 05:10:07,023 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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) [2022-12-14 05:10:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:07,375 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-12-14 05:10:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:10:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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 [2022-12-14 05:10:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:07,376 INFO L225 Difference]: With dead ends: 59 [2022-12-14 05:10:07,376 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 05:10:07,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2022-12-14 05:10:07,377 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 394 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:07,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 76 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:10:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 05:10:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 28. [2022-12-14 05:10:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 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) [2022-12-14 05:10:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-12-14 05:10:07,380 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2022-12-14 05:10:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:07,381 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-14 05:10:07,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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) [2022-12-14 05:10:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-14 05:10:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:10:07,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:07,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:10:07,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:10:07,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:10:07,583 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1059185297, now seen corresponding path program 1 times [2022-12-14 05:10:07,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:07,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940817666] [2022-12-14 05:10:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:07,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:07,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940817666] [2022-12-14 05:10:07,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940817666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:07,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:07,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:10:07,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561308604] [2022-12-14 05:10:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:07,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:10:07,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:10:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:10:07,796 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-12-14 05:10:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:07,937 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-12-14 05:10:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:10:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 05:10:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:07,938 INFO L225 Difference]: With dead ends: 40 [2022-12-14 05:10:07,938 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 05:10:07,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-12-14 05:10:07,939 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:07,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 21 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:10:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 05:10:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2022-12-14 05:10:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 25 states have internal predecessors, (30), 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) [2022-12-14 05:10:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-12-14 05:10:07,941 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 11 [2022-12-14 05:10:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:07,941 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-12-14 05:10:07,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-12-14 05:10:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-12-14 05:10:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:10:07,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:07,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:10:07,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 05:10:07,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:07,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1059185296, now seen corresponding path program 1 times [2022-12-14 05:10:07,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:07,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026294064] [2022-12-14 05:10:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:07,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:08,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:08,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026294064] [2022-12-14 05:10:08,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026294064] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:08,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:08,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:10:08,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953306781] [2022-12-14 05:10:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:10:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:10:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:10:08,044 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-12-14 05:10:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:08,121 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-12-14 05:10:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:10:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 05:10:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:08,122 INFO L225 Difference]: With dead ends: 34 [2022-12-14 05:10:08,123 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 05:10:08,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:10:08,124 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:08,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 80 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:10:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 05:10:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-12-14 05:10:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 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) [2022-12-14 05:10:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-12-14 05:10:08,126 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 11 [2022-12-14 05:10:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:08,126 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-14 05:10:08,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-12-14 05:10:08,127 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-14 05:10:08,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 05:10:08,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:08,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:10:08,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:10:08,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:08,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1524992805, now seen corresponding path program 1 times [2022-12-14 05:10:08,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:08,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517575723] [2022-12-14 05:10:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:08,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:08,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517575723] [2022-12-14 05:10:08,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517575723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:08,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:10:08,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:10:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966406016] [2022-12-14 05:10:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:08,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:10:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:10:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:10:08,188 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-12-14 05:10:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:08,202 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-12-14 05:10:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:10:08,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Word has length 12 [2022-12-14 05:10:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:08,203 INFO L225 Difference]: With dead ends: 27 [2022-12-14 05:10:08,203 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 05:10:08,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:10:08,204 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:08,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:10:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 05:10:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 05:10:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:10:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-12-14 05:10:08,206 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2022-12-14 05:10:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:08,207 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-12-14 05:10:08,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-12-14 05:10:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-12-14 05:10:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 05:10:08,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:08,207 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 05:10:08,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 05:10:08,208 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2049642214, now seen corresponding path program 2 times [2022-12-14 05:10:08,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:08,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902540972] [2022-12-14 05:10:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:08,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:08,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:08,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902540972] [2022-12-14 05:10:08,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902540972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:10:08,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027536141] [2022-12-14 05:10:08,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:10:08,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:10:08,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:10:08,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:10:08,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:10:08,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:10:08,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:10:08,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-14 05:10:08,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:10:08,632 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 14 treesize of output 10 [2022-12-14 05:10:08,929 INFO L321 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2022-12-14 05:10:08,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2022-12-14 05:10:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:09,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:10:09,343 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 27 treesize of output 23 [2022-12-14 05:10:09,353 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:10:09,353 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 43 treesize of output 47 [2022-12-14 05:10:09,360 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 95 treesize of output 77 [2022-12-14 05:10:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:09,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027536141] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:10:09,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [595010768] [2022-12-14 05:10:09,384 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:10:09,384 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:10:09,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:10:09,384 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:10:09,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:10:09,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:10:09,414 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 14 treesize of output 10 [2022-12-14 05:10:09,638 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:10:10,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '822#(and (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= |ULTIMATE.start_strrchr_~c#1| 47) (<= 0 |ULTIMATE.start_basename_#in~path#1.offset|) (<= 0 |ULTIMATE.start_strrchr_#in~t#1.base|) (<= 0 |ULTIMATE.start_main_~in~0#1.offset|) (<= 0 |ULTIMATE.start_basename_#in~path#1.base|) (<= |ULTIMATE.start_strrchr_#in~t#1.offset| 0) (< (select |#length| |ULTIMATE.start_strrchr_~t#1.base|) (+ |ULTIMATE.start_strrchr_~t#1.offset| 1)) (<= |ULTIMATE.start_basename_#in~path#1.offset| 0) (<= 0 |ULTIMATE.start_strrchr_#in~t#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 47 |ULTIMATE.start_strrchr_~c#1|) (<= 0 |ULTIMATE.start_basename_~path#1.offset|) (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647) (<= |ULTIMATE.start_basename_~path#1.offset| 0) (<= 0 |ULTIMATE.start_strrchr_~t#1.offset|) (<= |ULTIMATE.start_strrchr_#in~c#1| 47) (<= 0 |ULTIMATE.start_main_~in~0#1.base|) (<= 0 |ULTIMATE.start_strrchr_~l~0#1.offset|) (<= 0 |ULTIMATE.start_strrchr_~t#1.base|) (<= |ULTIMATE.start_main_~in~0#1.offset| 0) (= |#NULL.offset| 0) (<= 47 |ULTIMATE.start_strrchr_#in~c#1|) (<= 0 |ULTIMATE.start_strrchr_~l~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_basename_~path#1.base|) (<= 1 |ULTIMATE.start_main_~in_len~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:10:10,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:10:10,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:10:10,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2022-12-14 05:10:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005522933] [2022-12-14 05:10:10,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:10:10,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 05:10:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 05:10:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:10:10,492 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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) [2022-12-14 05:10:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:11,775 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-12-14 05:10:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:10:11,776 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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 14 [2022-12-14 05:10:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:11,776 INFO L225 Difference]: With dead ends: 34 [2022-12-14 05:10:11,776 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 05:10:11,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=287, Invalid=1353, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 05:10:11,777 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 144 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:11,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 53 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:10:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 05:10:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 20. [2022-12-14 05:10:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 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) [2022-12-14 05:10:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-12-14 05:10:11,779 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2022-12-14 05:10:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:11,779 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-12-14 05:10:11,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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) [2022-12-14 05:10:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-12-14 05:10:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 05:10:11,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:11,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:10:11,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:10:11,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 05:10:11,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:11,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash -885636465, now seen corresponding path program 1 times [2022-12-14 05:10:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:11,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684902463] [2022-12-14 05:10:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:12,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:12,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684902463] [2022-12-14 05:10:12,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684902463] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:10:12,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621379633] [2022-12-14 05:10:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:12,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:10:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:10:12,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:10:12,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:10:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:12,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 05:10:12,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:10:12,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:10:12,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 125 treesize of output 169 [2022-12-14 05:10:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:13,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:10:14,058 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:10:14,059 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 22 treesize of output 26 [2022-12-14 05:10:14,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:10:14,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 256 [2022-12-14 05:10:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:16,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621379633] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:10:16,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906244992] [2022-12-14 05:10:16,137 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 05:10:16,137 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:10:16,137 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:10:16,137 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:10:16,137 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:10:16,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:10:16,158 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 14 treesize of output 10 [2022-12-14 05:10:16,341 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:10:17,555 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1018#(and (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= |ULTIMATE.start_strrchr_~c#1| 47) (<= 0 |ULTIMATE.start_basename_#in~path#1.offset|) (<= 0 |ULTIMATE.start_strrchr_#in~t#1.base|) (or (not (= |ULTIMATE.start_basename_~c~0#1.offset| 0)) (not (= |ULTIMATE.start_basename_~c~0#1.base| 0))) (<= 0 |ULTIMATE.start_main_~in~0#1.offset|) (<= 0 |ULTIMATE.start_basename_#in~path#1.base|) (<= |ULTIMATE.start_strrchr_#in~t#1.offset| 0) (= |ULTIMATE.start_basename_~c~0#1.base| |ULTIMATE.start_strrchr_#res#1.base|) (<= |ULTIMATE.start_basename_#in~path#1.offset| 0) (<= 0 |ULTIMATE.start_strrchr_#in~t#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 47 |ULTIMATE.start_strrchr_~c#1|) (= |ULTIMATE.start_strrchr_~l~0#1.base| |ULTIMATE.start_strrchr_#res#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_strrchr_~t#1.base|) |ULTIMATE.start_strrchr_~t#1.offset|) 0) (<= 0 |ULTIMATE.start_basename_~path#1.offset|) (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647) (<= |ULTIMATE.start_basename_~path#1.offset| 0) (<= 0 |ULTIMATE.start_strrchr_~t#1.offset|) (not (<= (+ 2 |ULTIMATE.start_basename_~c~0#1.offset|) (select |#length| |ULTIMATE.start_basename_~c~0#1.base|))) (<= 0 |ULTIMATE.start_main_~in~0#1.base|) (= (select |#valid| |ULTIMATE.start_strrchr_~t#1.base|) 1) (<= 0 |ULTIMATE.start_strrchr_~l~0#1.offset|) (<= 0 |ULTIMATE.start_strrchr_~t#1.base|) (= |ULTIMATE.start_strrchr_#in~c#1| 47) (<= |ULTIMATE.start_main_~in~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_strrchr_#res#1.offset| |ULTIMATE.start_strrchr_~l~0#1.offset|) (= |ULTIMATE.start_strrchr_#res#1.offset| |ULTIMATE.start_basename_~c~0#1.offset|) (<= (+ |ULTIMATE.start_strrchr_~t#1.offset| 1) (select |#length| |ULTIMATE.start_strrchr_~t#1.base|)) (<= 0 |ULTIMATE.start_strrchr_~l~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_basename_~path#1.base|) (<= 1 |ULTIMATE.start_main_~in_len~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:10:17,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:10:17,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:10:17,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2022-12-14 05:10:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726592235] [2022-12-14 05:10:17,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:10:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 05:10:17,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 05:10:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 05:10:17,558 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 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) [2022-12-14 05:10:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:27,883 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-12-14 05:10:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 05:10:27,883 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 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 15 [2022-12-14 05:10:27,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:27,884 INFO L225 Difference]: With dead ends: 59 [2022-12-14 05:10:27,884 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 05:10:27,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=955, Invalid=5365, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 05:10:27,887 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 280 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:27,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 77 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:10:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 05:10:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 29. [2022-12-14 05:10:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-12-14 05:10:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-12-14 05:10:27,890 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 15 [2022-12-14 05:10:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:27,890 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-12-14 05:10:27,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 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) [2022-12-14 05:10:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-12-14 05:10:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 05:10:27,891 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:27,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:10:27,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:10:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:10:28,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 05:10:28,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:28,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1102322223, now seen corresponding path program 1 times [2022-12-14 05:10:28,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:28,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412219923] [2022-12-14 05:10:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:28,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:28,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:10:28,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412219923] [2022-12-14 05:10:28,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412219923] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:10:28,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952711088] [2022-12-14 05:10:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:28,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:10:28,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:10:28,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:10:28,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:10:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:10:28,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-14 05:10:28,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:10:28,495 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:10:28,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 18 [2022-12-14 05:10:28,517 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 6 treesize of output 5 [2022-12-14 05:10:29,246 INFO L321 Elim1Store]: treesize reduction 42, result has 61.5 percent of original size [2022-12-14 05:10:29,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 104 [2022-12-14 05:10:29,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:10:29,258 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 40 treesize of output 42 [2022-12-14 05:10:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:29,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:10:29,421 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 8 treesize of output 6 [2022-12-14 05:10:31,116 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 75 treesize of output 69 [2022-12-14 05:10:31,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:10:31,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 119 [2022-12-14 05:10:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:10:31,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952711088] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:10:31,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1273625039] [2022-12-14 05:10:31,565 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:10:31,565 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:10:31,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:10:31,565 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:10:31,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:10:31,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:10:31,589 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 14 treesize of output 10 [2022-12-14 05:10:31,945 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:10:33,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1273625039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:10:33,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:10:33,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 16, 16] total 56 [2022-12-14 05:10:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436486915] [2022-12-14 05:10:33,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:10:33,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:10:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:10:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:10:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 05:10:33,860 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2022-12-14 05:10:35,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:10:35,648 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-12-14 05:10:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 05:10:35,649 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) Word has length 22 [2022-12-14 05:10:35,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:10:35,649 INFO L225 Difference]: With dead ends: 29 [2022-12-14 05:10:35,649 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:10:35,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=457, Invalid=3703, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 05:10:35,650 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 23 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:10:35,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:10:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:10:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:10:35,651 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) [2022-12-14 05:10:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:10:35,651 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-12-14 05:10:35,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:10:35,651 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:10:35,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2022-12-14 05:10:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:10:35,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:10:35,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-12-14 05:10:35,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-12-14 05:10:35,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-12-14 05:10:35,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-12-14 05:10:35,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-12-14 05:10:35,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-12-14 05:10:35,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2022-12-14 05:10:35,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2022-12-14 05:10:35,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2022-12-14 05:10:35,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2022-12-14 05:10:35,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2022-12-14 05:10:35,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:10:35,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:10:35,863 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:10:35,869 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:10:35,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:10:35 BoogieIcfgContainer [2022-12-14 05:10:35,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:10:35,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:10:35,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:10:35,879 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:10:35,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:04" (3/4) ... [2022-12-14 05:10:35,887 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 05:10:35,901 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-14 05:10:35,901 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 05:10:35,901 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 05:10:35,901 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:10:35,923 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 05:10:35,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:10:35,924 INFO L158 Benchmark]: Toolchain (without parser) took 32588.62ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 123.1MB in the beginning and 52.8MB in the end (delta: 70.3MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. [2022-12-14 05:10:35,924 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:10:35,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.20ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 107.0MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:10:35,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.36ms. Allocated memory is still 163.6MB. Free memory was 107.0MB in the beginning and 104.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:10:35,924 INFO L158 Benchmark]: Boogie Preprocessor took 17.42ms. Allocated memory is still 163.6MB. Free memory was 104.9MB in the beginning and 103.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:10:35,924 INFO L158 Benchmark]: RCFGBuilder took 302.10ms. Allocated memory is still 163.6MB. Free memory was 103.5MB in the beginning and 88.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:10:35,925 INFO L158 Benchmark]: TraceAbstraction took 31863.48ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 88.8MB in the beginning and 55.3MB in the end (delta: 33.5MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2022-12-14 05:10:35,925 INFO L158 Benchmark]: Witness Printer took 44.83ms. Allocated memory is still 197.1MB. Free memory was 55.3MB in the beginning and 52.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:10:35,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.20ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 107.0MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.36ms. Allocated memory is still 163.6MB. Free memory was 107.0MB in the beginning and 104.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.42ms. Allocated memory is still 163.6MB. Free memory was 104.9MB in the beginning and 103.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.10ms. Allocated memory is still 163.6MB. Free memory was 103.5MB in the beginning and 88.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 31863.48ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 88.8MB in the beginning and 55.3MB in the end (delta: 33.5MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. * Witness Printer took 44.83ms. Allocated memory is still 197.1MB. Free memory was 55.3MB in the beginning and 52.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 529]: 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, 28 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 31.8s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1174 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1174 mSDsluCounter, 449 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 292 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1049 IncrementalHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 157 mSDtfsCounter, 1049 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2577 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=11, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 111 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 218 ConstructedInterpolants, 48 QuantifiedInterpolants, 5502 SizeOfPredicates, 76 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 3/78 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: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 15, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 25, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 25, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 46, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 15, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 171, DAG_COMPRESSION_RETAINED_NODES: 42, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 05:10:35,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1ab202-7c9a-4dc6-b72c-86957dd59374/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE