./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed9ad97c04e31259eb9462964e1ee9692abc78f6814573ccfff6d31784ab3b25 --- 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-38b53e6 [2022-11-25 23:50:52,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:50:52,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:50:52,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:50:52,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:50:52,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:50:52,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:50:52,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:50:52,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:50:52,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:50:52,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:50:52,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:50:52,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:50:52,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:50:52,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:50:52,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:50:52,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:50:52,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:50:52,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:50:52,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:50:52,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:50:52,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:50:52,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:50:52,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:50:52,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:50:52,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:50:52,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:50:52,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:50:52,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:50:52,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:50:52,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:50:52,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:50:52,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:50:52,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:50:52,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:50:52,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:50:52,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:50:52,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:50:52,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:50:52,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:50:52,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:50:52,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-25 23:50:52,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:50:52,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:50:52,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:50:52,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:50:52,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:50:52,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:50:52,605 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:50:52,606 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:50:52,606 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:50:52,606 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:50:52,607 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:50:52,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:50:52,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:50:52,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:50:52,608 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:50:52,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:50:52,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:50:52,609 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:50:52,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 23:50:52,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 23:50:52,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:50:52,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:50:52,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:50:52,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:50:52,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:50:52,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:50:52,613 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 23:50:52,613 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 23:50:52,614 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 23:50:52,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:50:52,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:50:52,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:50:52,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:50:52,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:50:52,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:50:52,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:50:52,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:50:52,616 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:50:52,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:50:52,617 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:50:52,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:50:52,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:50:52,618 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_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed9ad97c04e31259eb9462964e1ee9692abc78f6814573ccfff6d31784ab3b25 [2022-11-25 23:50:52,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:50:52,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:50:52,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:50:52,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:50:52,982 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:50:52,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2022-11-25 23:50:56,365 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:50:56,618 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:50:56,618 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2022-11-25 23:50:56,635 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/data/9228a74bd/61c18b8cefe84fd6ab4605f22c57f8dc/FLAGbfa4b0455 [2022-11-25 23:50:56,652 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/data/9228a74bd/61c18b8cefe84fd6ab4605f22c57f8dc [2022-11-25 23:50:56,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:50:56,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:50:56,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:50:56,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:50:56,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:50:56,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:50:56" (1/1) ... [2022-11-25 23:50:56,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:56, skipping insertion in model container [2022-11-25 23:50:56,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:50:56" (1/1) ... [2022-11-25 23:50:56,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:50:56,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:50:57,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:50:57,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:50:57,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:50:57,199 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:50:57,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57 WrapperNode [2022-11-25 23:50:57,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:50:57,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:50:57,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:50:57,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:50:57,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,247 INFO L138 Inliner]: procedures = 124, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-25 23:50:57,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:50:57,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:50:57,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:50:57,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:50:57,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:50:57,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:50:57,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:50:57,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:50:57,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (1/1) ... [2022-11-25 23:50:57,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:50:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:50:57,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:50:57,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:50:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:50:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:50:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:50:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:50:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:50:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:50:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:50:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:50:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:50:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:50:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:50:57,514 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:50:57,516 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:50:57,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:50:57,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:50:57,705 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:50:57,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:50:57 BoogieIcfgContainer [2022-11-25 23:50:57,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:50:57,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:50:57,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:50:57,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:50:57,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:50:56" (1/3) ... [2022-11-25 23:50:57,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c18c608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:50:57, skipping insertion in model container [2022-11-25 23:50:57,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:57" (2/3) ... [2022-11-25 23:50:57,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c18c608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:50:57, skipping insertion in model container [2022-11-25 23:50:57,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:50:57" (3/3) ... [2022-11-25 23:50:57,719 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2022-11-25 23:50:57,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:50:57,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 23:50:57,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:50:57,810 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;@a0c24c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:50:57,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-25 23:50:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 29 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) [2022-11-25 23:50:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-25 23:50:57,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:57,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-25 23:50:57,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:50:57,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2360, now seen corresponding path program 1 times [2022-11-25 23:50:57,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:57,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040921242] [2022-11-25 23:50:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:57,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:58,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:58,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040921242] [2022-11-25 23:50:58,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040921242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:58,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:58,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:50:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459842471] [2022-11-25 23:50:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:58,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:58,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:58,288 INFO L87 Difference]: Start difference. First operand has 30 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 29 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:58,360 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-25 23:50:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:58,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-25 23:50:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:58,373 INFO L225 Difference]: With dead ends: 24 [2022-11-25 23:50:58,373 INFO L226 Difference]: Without dead ends: 23 [2022-11-25 23:50:58,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:58,379 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:58,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:58,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-25 23:50:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-25 23:50:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-25 23:50:58,418 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 2 [2022-11-25 23:50:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:58,419 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-25 23:50:58,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-25 23:50:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-25 23:50:58,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:58,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-25 23:50:58,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:50:58,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:50:58,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2361, now seen corresponding path program 1 times [2022-11-25 23:50:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:58,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403088518] [2022-11-25 23:50:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:58,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:58,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403088518] [2022-11-25 23:50:58,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403088518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:58,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:58,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:50:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967683298] [2022-11-25 23:50:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:58,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:58,679 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:58,729 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-25 23:50:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-25 23:50:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:58,733 INFO L225 Difference]: With dead ends: 17 [2022-11-25 23:50:58,733 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 23:50:58,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:58,735 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:58,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:50:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 23:50:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-25 23:50:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-11-25 23:50:58,748 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 2 [2022-11-25 23:50:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:58,753 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-25 23:50:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-25 23:50:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:50:58,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:58,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:50:58,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:50:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash -27451954, now seen corresponding path program 1 times [2022-11-25 23:50:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:58,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218747469] [2022-11-25 23:50:58,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:58,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:59,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:59,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218747469] [2022-11-25 23:50:59,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218747469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:59,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:59,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:59,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676531493] [2022-11-25 23:50:59,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:59,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:59,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:59,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:59,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:59,053 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:59,109 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-11-25 23:50:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:50:59,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:50:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:59,114 INFO L225 Difference]: With dead ends: 16 [2022-11-25 23:50:59,114 INFO L226 Difference]: Without dead ends: 16 [2022-11-25 23:50:59,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:50:59,126 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 22 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 [2022-11-25 23:50:59,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 22 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:50:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-25 23:50:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-25 23:50:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-25 23:50:59,131 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2022-11-25 23:50:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:59,131 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-25 23:50:59,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-25 23:50:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:50:59,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:59,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:59,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:50:59,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:50:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -851010507, now seen corresponding path program 1 times [2022-11-25 23:50:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:59,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140607272] [2022-11-25 23:50:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:59,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:59,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140607272] [2022-11-25 23:50:59,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140607272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:59,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:59,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461299912] [2022-11-25 23:50:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:59,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:59,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:59,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:59,394 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:59,446 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-25 23:50:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:50:59,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:50:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:59,448 INFO L225 Difference]: With dead ends: 15 [2022-11-25 23:50:59,448 INFO L226 Difference]: Without dead ends: 15 [2022-11-25 23:50:59,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:50:59,450 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:59,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:50:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-25 23:50:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-25 23:50:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-25 23:50:59,454 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-11-25 23:50:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:59,455 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-25 23:50:59,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-25 23:50:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:50:59,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:59,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:59,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:50:59,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:50:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:59,458 INFO L85 PathProgramCache]: Analyzing trace with hash -611521872, now seen corresponding path program 1 times [2022-11-25 23:50:59,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:59,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095809164] [2022-11-25 23:50:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:59,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:59,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:59,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095809164] [2022-11-25 23:50:59,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095809164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:59,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:59,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218000964] [2022-11-25 23:50:59,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:59,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:59,615 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:59,661 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-25 23:50:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:50:59,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 23:50:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:59,663 INFO L225 Difference]: With dead ends: 14 [2022-11-25 23:50:59,663 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:50:59,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:50:59,665 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:59,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:50:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:50:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-25 23:50:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-25 23:50:59,669 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2022-11-25 23:50:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:59,670 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-25 23:50:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-25 23:50:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:50:59,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:59,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:59,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:50:59,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:50:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1777308776, now seen corresponding path program 1 times [2022-11-25 23:50:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:59,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791679931] [2022-11-25 23:50:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:59,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:59,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791679931] [2022-11-25 23:50:59,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791679931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:59,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:59,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:50:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193508781] [2022-11-25 23:50:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:50:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:50:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:50:59,976 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-25 23:51:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:00,044 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-25 23:51:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:51:00,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2022-11-25 23:51:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:00,046 INFO L225 Difference]: With dead ends: 13 [2022-11-25 23:51:00,046 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:51:00,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:51:00,050 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:00,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:51:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:51:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:51:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:51:00,055 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-25 23:51:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:00,056 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:51:00,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-25 23:51:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:51:00,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:51:00,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 16 remaining) [2022-11-25 23:51:00,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-11-25 23:51:00,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-11-25 23:51:00,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-11-25 23:51:00,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-11-25 23:51:00,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-11-25 23:51:00,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-11-25 23:51:00,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-11-25 23:51:00,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-11-25 23:51:00,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-11-25 23:51:00,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-11-25 23:51:00,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-11-25 23:51:00,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (3 of 16 remaining) [2022-11-25 23:51:00,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (2 of 16 remaining) [2022-11-25 23:51:00,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (1 of 16 remaining) [2022-11-25 23:51:00,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2022-11-25 23:51:00,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:51:00,068 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-25 23:51:00,072 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:51:00,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:51:00 BoogieIcfgContainer [2022-11-25 23:51:00,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:51:00,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:51:00,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:51:00,079 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:51:00,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:50:57" (3/4) ... [2022-11-25 23:51:00,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:51:00,095 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-25 23:51:00,096 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-25 23:51:00,096 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 23:51:00,096 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:51:00,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:51:00,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:51:00,136 INFO L158 Benchmark]: Toolchain (without parser) took 3474.03ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 114.0MB in the beginning and 112.4MB in the end (delta: 1.6MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-11-25 23:51:00,137 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 159.4MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:51:00,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 531.03ms. Allocated memory is still 159.4MB. Free memory was 114.0MB in the beginning and 97.8MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:51:00,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.58ms. Allocated memory is still 159.4MB. Free memory was 97.8MB in the beginning and 95.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:51:00,138 INFO L158 Benchmark]: Boogie Preprocessor took 28.97ms. Allocated memory is still 159.4MB. Free memory was 95.7MB in the beginning and 94.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:51:00,138 INFO L158 Benchmark]: RCFGBuilder took 430.91ms. Allocated memory is still 159.4MB. Free memory was 94.5MB in the beginning and 81.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:51:00,139 INFO L158 Benchmark]: TraceAbstraction took 2366.57ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 80.4MB in the beginning and 114.5MB in the end (delta: -34.0MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-11-25 23:51:00,139 INFO L158 Benchmark]: Witness Printer took 57.47ms. Allocated memory is still 205.5MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:51:00,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 159.4MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 531.03ms. Allocated memory is still 159.4MB. Free memory was 114.0MB in the beginning and 97.8MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.58ms. Allocated memory is still 159.4MB. Free memory was 97.8MB in the beginning and 95.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.97ms. Allocated memory is still 159.4MB. Free memory was 95.7MB in the beginning and 94.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.91ms. Allocated memory is still 159.4MB. Free memory was 94.5MB in the beginning and 81.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2366.57ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 80.4MB in the beginning and 114.5MB in the end (delta: -34.0MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Witness Printer took 57.47ms. Allocated memory is still 205.5MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 524]: 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, 30 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 44 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 27, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 23:51:00,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88b42ea8-dd47-4185-9c1c-f9b3765d5de9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE